This is a significant workload, but we wanted to stress the drives to ensure we could get separation. If your drive follows HGST model naming convention, then you would have to replace one or two capacity encoding numbers and the very last number in the model name with "?". They are also not doing a realistic test since it seems they are not putting a workload on the NAS during rebuilds? How BIG is it? They’re using the technical block size and command bits to hide that they’ve done a less thorough experiment. Many of our readers may already be familiar with the differences between SMR and CMR, but a quick refresher never hurt anyone! I have many WD external drives, and i DON’T WANT any drive with SMR!!! Downside is that it's in stock on Dec. 19th. Very interesting, very disconcerting. Please don't send me the USB model name aka enclosure name, I will not be able to tell anything by it. Newegg shopping upgraded ™ 5 Inch Cache Size 64 MB Disk Speed (RPM) 5400rpm Compatibility • Windows® 10. Will has worked in both big enterprise and small business IT since 2001. WD has not provided the specifics of how their drives mitigate against the performance impact of using SMR, so we are operating on guesswork as to the size or even existence of a CMR cache area in the WD Red. I know I’m being a d!ck here but the video has a much more thorough impact assessment while this is more showing the testing behind what’s being said in the video. I will NEVER buy another EXTERNAL WD drive again without the warranty to check the internal drive MODEL first!!!! But you are not showing how long does it take for an array to rebuild under those conditions? These targeted tests are not designed to be comprehensive, but instead, illuminate any obvious differences between the SMR drive and its CMR competitors. I generally tell people RAID arrays tend to operate at the speed of their slowest part. Przy Zastosowanie z dyski twarde z SMR w jednym RAID-Verbund, jest darauf do achten, dass ten RAID-kontroler (lub das NAS system) do SMR-Dyski twarde kompatybilny jest, za das częściowo geblockte Aufzeichnungsverhalten przy SMR … SMR hard drives have TRIM support, so if it is listed it is SMR. And this is VERY BAD NEWS. Buy WD Blue 4TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EZRZ with fast shipping and top-rated customer service. Clearly the problem is with the label on the drive. Just read this bollocks: https://arstechnica.com/gadgets/2020/06/western-digitals-smr-disks-arent-great-but-theyre-not-garbage/2/. This site uses Akismet to reduce spam. Yes, there is an array running here, due to the brilliance of picking drives from different production runs and vendors, that has half SMR and half CMR. This has been the standard technology behind … models: wdc wd40ezrz-00wn9b0, wdc wd40ezrz-64d85y0, wd40ezrz-64d85y0, wdc wd40ezrz-00w, wdc wd40ezrz-19gxcb0, wdc wd40 ezrz-22gxcb0, wdc wd40 ezrz-75gxcb0, wdc wd40 ezrz-00wn9b0, wdc wd40ezrz-22gxcb0, wdc wd40ezrz-75g, wdc wd40 ezrz-19gxcb0, wdc wd40ezrz-07gxcb0, wdc wd40ezrz-00g, wdc wd40ezrz-22g, wdc wd40ezrz-75gxcb0, wdc wd40 ezrz-00gxcb0, wdc wd40ezrz … Shucking external drives (which are often SMR) is mentioned on both pages. I already changed motherboard once because I thought it was a motherboard issue. It says look to WD for more information and WD has not, over the course of the ensuing month, provided an update. I wonder to what extent can performance be regained with its use. Luke, And for SSD be aware that SSD QLC SSD drives will fall back to about 80MBps transfer rate as soon as you fill the small cache that it has built in. At least WD is now showing which model numbers are CMR or SMR on their spec. I have a "WD 4TB Elements Desktop External Hard Drive - USB 3.0". After that, some more targeted tests were run, pitting the WD40EFAX against three other CMR 4TB drives in a standard ZFS RAIDZ operation: rebuilding an array with a new drive after a drive has failed. And upon further investigation I found out that these disks are SMR. For the test configuration, we wanted a configuration that de-emphasized CPU performance. HGST naming convention: all model names in this naming convention start with letters "W" or "H", and there is no dash in the model name, for example HUH728080ALE601, WUH721010AL42L4. More Deals & Coupons Like "4TB WD Blue 3.5" PC Hard Drive HDD 5400RPM CMR WD40EZRZ - " 1 Jan, 9:10 am. As a mitigation against this penalty, writes can be cached to a segment of the drive that operates with CMR technology, and during idle time the drive will spool those writes out to the SMR area. From the brief I now know the 3TB drives I bought for my Synology are CMR. I have two drives WD60EZAZ-00ZGGHBO and WD60EZRZ-00GZ5B1 And need to know if these are PMR or SMR. I had such a great week too. Has anyone tested this? Compare Western Digital WD Red Plus (CMR) WD40EFRX 3.5" SATA 6Gb/s AND Western Digital WD Blue WD40EZRZ 3.5" SATA 6Gb/s WD40EFRX ISwcr4000 PRODUCT PAGE £90.10 ex.VAT £108.12 inc.VAT Check availability For example HUH728060ALE601 would become HUH7280? 1,935 Views 3 Comments - 4TB - CMR - 5400 RPM - 2 year limited warranty - New manufacture (not unused old stock) - Product #: WD40EZRZ-Free shipping (at least that's what showed up in my cart, so YMMV I guess) Well, i got new for you: crystaldiskinfo CAN!!! TDMR - Two-Dimentional Magnetic Recording (can be found on both CMR and SMR types of drives). This forces the data on the overlapping tracks to be rewritten during the process, which takes extra time to perform. Is WD USING RAID / more demanding users as “guinea pigs” to test SMR and then move on and use SMR on +14TB drives (that currently use HELIUM inside to bypass the theoretical limitation of 6 platters / 12 heads)??? AFAIK, the SMR Reds support the TRIM command. Data is written on magnetic tracks that are side-by-side, do not overlap, and write operations on one track do not affect its neighbors. (1) WDC WD20EARX-00PASB0 : 2000,3 GB [1/0/0, sa1] – wd Effectively we wanted to take CPU performance out of the equation to focus on drive performance. Plus, I’d like to see some stock hardware RAID devices tested along the same lines. 后面是ezaz的，是smr硬盘！ 西数红盘里的pmr硬盘（3. However for the price, its a meh deal. Get the best of STH delivered weekly to your inbox. Note that currently, the MAX capacity drive using SMR is the 6TB WD60EFAX, with 3 platters / 6 heads… So… is that it?? Posted on Apr 24th 2020, 6:28 Reply #19 Tomorrow. Checked the invoice and they are marked as WD40EFRX (phew)…. Initially it worked reasonably fast, but as time went on, it slowed down. But great test methodology STH. Our data shows that the disk drives WD 4TB WD40EZRZ are NOT based on SMR technology, the disk drives are based on CMR. NAS drives are always a gamble, SMR or not, you should always keep away from the cheap HDD drives and that also includes cheap SSD’s if you are trying to have a NAS that have a good performance in a Raid setup. Duplicity or lazy indifference or both? Good analysis. First up is CMR, which stands for conventional magnetic recording. would be interesting to see RAID rebuild time on a more conventional RAID setup. Friends don’t let friends use SMR drives for NAS. We say 9 days and we’re understating the problem, which in my mind is the more defensible position. perhaps hardware raid or Linux mdadm etc, instead of just ZFS. If you watch the video, it’s funny. Now we’re going to switch to Seagate. Thanks for putting your readers first with stuff like this. Great article, thanks for the info. The drives perform terrible ever since day 1, causing the whole PC to appear unresponsive for minutes the moment 1 file in the Steam library is rewritten for game updates. Listed below: ST8000VX002 ST8000VX008 SMR ST6000VX011 ST6000V… The CMR technology features a … Compare Western Digital WD Blue WD40EZRZ 3.5" SATA 6Gb/s AND Western Digital WD Red Plus (CMR) WD40EFRX 3.5" SATA 6Gb/s WD40EZRZ ISwdb4000 PRODUCT PAGE £77.00 ex.VAT £92.40 inc.VAT Check availability You don’t need to do it with CMR drives either. We are also testing a common use case that many may not think of. But for a consumer case is the whole SMR debate a real problem? I’m really frustrated. Does it strongly depend on the Type of RAID and Filesystem ? And a supervisor … So take your time and pick your storage depending on your needs. We found SMR can put data at risk 13-16x longer than CMR Use this string "??L0BN?" Since my source had 4 x 4TB WD Red CMRs, using a single 8TB drive for backups was perfect. Since WD Corporation purchased HGST, all the hard drive models produced by both companies are intertwined in company portfolios. While that also sounds like a win for. I received a phone call from the rep this morning. We utilize a lot of ZFS at STH, so in mid-April 2020 we started a project to see if, indeed, there was a difference. In the file copy test, the effects of the slower SMR technology starts to show itself a bit. Is that the next step? If we’d said 10 days, someone could come along and say we were exaggerating the issue. That said, his personal IT motto has to be "if it's not broke, don't fix it" so sometimes the old ways are best. Great to see some hard facts related to this after reading about it from others. Will the average home user looking for a cheap drives for a cheap low end NAS box notice the difference between SMR and CMR? PMR is the successor to Longitudinal Magnetic Recording (LMR) and achieves a data density three times higher than its predecessor LMR – the read / write head has been optimized for this and the vertical positioning also contributes to this. 16TB Seagate Exos Enterprise HDD X16 SATA 512e/4Kn 7200 RPM Int Hard Drive @Newegg $336. You don’t test a drive before putting it into a rebuild scenario? Many of our readers may already be familiar with the differences between SMR and CMR, but a quick refresher never hurt anyone! Then I found out about this lawsuit. Even with a cache flush they’re hitting steady state because of the rebuild. And it looks like WD got caught and now have a class-action law suit brewing: If you mix drives, the slower ones tend to dictate performance more times than not. I don’t want a mechanical disk that overlaps tracks and has to write adjacent tracks just to write a specific track!!! 1) For higher NAS use stay away from SMR HDD, and QLC SSD’s. Think of this as you know you have WD Red 4TB drives (likely CMR) in your FreeNAS array, a drive fails so you go to Best Buy. PMR - Perpendicular Magnetic Recording (both CMR and SMR type drives use it). Now I know I’ve sold my customers FreeNAS hardware that isn’t good. Since then, I standardized on 10 TB which are CRM. Most people do not understand how complex SMR is when data needs to be moved from a bottom shingled track. Termin CMR odnosi się również do międzynarodowego listu przewozowego CMR, stanowiącego podstawowy dokument przewozowy. It takes balls to do it but know I appreciate it. SMR has worse sustained write performance than CMR, which can cause severe issues during resilver or other write-intensive operations, up to and including failure of that resilver. Which Drive Has What? I have a problem with your RAIDZ test: normally I replace failed disks with brand new, just unpacked ones, not the ones that were used to write a lot of data and immediately disconnected. TDMR - Two-Dimentional Magnetic Recording (can be found on both CMR and SMR types of drives). That’s terrible practice. With all the recent controversy regarding WD, Toshiba, and Seagate slipping SMR drives into retail channels and failing to disclose the use of their slower technology, we thought it would be interesting to dive into the actual impact of using a SMR drive. I had followed the story on blocksandfiles (.com) and this is really good that it landed on STH and then followed by a testing report. more based on 87,632 user benchmarks. Just a reminder, this test was performed as immediately as possible after completing the drive preparation process. Feel free to listen along while you read. You would notice that some characters in the model names in the tables below are replaced with "?". If you would like to publish or reproduce any part of this article on the other Internet recourses you would have to get an agreement signed by the author of this article. This article has been written exclusively for hddscan.com Reds aren’t cheap either, but they’ve previously been good. Prior to beginning this sequence of tests, the drives were prepped by having 3TB of data written to them, and then 1TB of that data is deleted. CMOSTTL this basically shows stay away from SMR even for backup in NASes. I think you should explain how SMR works with a bunch of images or an animation. Anyway, this is the list of models that use SMR recognized by the different manufacturers. I was under the misapprehension (along with that sinking feeling) from reporting from other sites that all 3TB WD Reds are SMR when in fact there are two models. It is strange not to at least generate some workload during a rebuild. How to tell a difference between DM-SMR and non-SMR (CMR) drives (HDD) – compare Posted on 18th April 2020 23rd October 2020 by NAScompares Your story on WD using SMR in some drives without mentioning it on the spec sheets was eye opening. Model Number² WD60EZAZ WD60EZRZ WD40EZRZ WD30EZRZ WD20EZAZ WD20EZRZ WD10EZRZ WD10EZEX WD5000AZ-RZ WD5000AZLX Recording Technology 9 SMR CMR CMR CMR SMR CMR CMR CMR CMR CMR Formatted capacity¹ 6TB 6TB 4TB 3TB 2TB 2TB 1TB 1TB 500GB 500GB Form factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch Dear Western Digital, I will probably continue to buy WD Red in the future, but I just voted with my $$$ following that story. The test array is a 4-drive RAIDZ volume that has been filled to around 60% capacity. Seems all the usual retailers are only carrying the newer SMR version and the only place that carries the older version has jacked the prices up. At the start you’d think he’s anti-WD but by the end you realize he’s actually anti-Red SMR. You have entered an incorrect email address! It is often desirable to choose a CMR drive instead. Stupid WD support… ). Cost isnt a huge concern more then availability for future drive expansion or drive replacement incase of failure. https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-red-hdd/data-sheet-western-digital-wd-red-hdd-2879-800002.pdf. I’d like to say thanks to Seagate for keeping CMR IronWolf. HM-SMR - Host Managed Shingled Magnetic Recording. Things get worse when Steam needs to preallocate storage space for new games, often I have to leave the machine alone for two to three hours. We are using a third party service to manage subscriptions so you can unsubscribe at any time. https://www.hattislaw.com/cases/investigations/western-digital-lawsuit-for-shipping-slower-smr-hard-drives-including-wd-red-nas/, I just ordered 3 WD 4TB Red for a new NAS and had no clue! They were apologetic, but then they dropped the bombshell: All Seagate 2.5″ drives are SMR, they no longer make 2.5″ PMR drives. That’s for sure! SMR vs CMR – A quick primer. I’d really like to go through all my drives and explicitly verify which ones are SMR vs CMR. On top of which you badly tried to cover it up before finally facing it up. to search for model name in the tables below: can be found as WD60EFRX-??L0BN?. So, if anyone needs to know WHAT INTERNAL DRIVE MODEL they have in their WD EXTERNAL ENCLOSURES, install https://crystalmark.info/en/software/crystaldiskinfo and COPY PAST the info to the clipboard! I get that it’s not OK to hide what the drive actually uses, but on a Media Server/Backup level ? As a perpetual dabbler, he is always open to new solutions for old problems. SMR has worse sustained write performance than CMR, which can cause severe issues during resilver or other write-intensive operations, up to and including failure of that resilver. hey thanks for the quick reply! Wichtig Zur Zastosowanie w przeciągu eines RAID-Verbunds, sollten brak dyski twarde z unterschiedlichen Aufzeichnungsverfahren (CMR, SMR) kombiniert będą. Each drive has been optimised, tested, and approved by various technology partners to meet and exceed the requirements for its application in terms of reliability, performance and quality. Thank you for the article and thank you in particular Will for the link to the WD Product brief. I needed 3 x 10TB drives, I went with barely used open-box HSGT He10 on eBay (all 2019 models with around 1,000 hours usage). First up, the new SMR drive has been put through a handful of standard benchmarks just to see how it performs in the context of a larger pool of drives. More trolls on STH when you get to these mass audience articles. Our drives are purpose-built, meaning each of our internal drives are built specifically for their intended use. Then modify this short model name, replacing first two characters and the very last one with "? A great example is http://blog.robiii.nl/2020/04/wd-red-nas-drives-use-smr-and-im-not.html. To be crystal clear, I knew what SMR was, and that the drive used it. Compare this with the “INFECTED” SMR drive list, and you’re good to go! While I expect the drive failures, I also look for a predictable level of performance during operation and rebuilds. So they can target “specific” markets with the SMR drives? Coupon by sr71. to search for model name in the tables below. (EDIT -> COPY or CTRL-C). 4TB WD Blue 3.5″ PC Hard Drive HDD 5400RPM CMR WD40EZRZ – $80 – January 10, 2021 at 06:08PM I second the motion to re-test with Linux MD-RAID. Also, NAS units and RAID arrays are designed to continue serving applications and users when in degraded states. That’s why STH is a gem. ", for example 68L0BN1 would become ??L0BN?. Spend a little bit more money for the 54/5600 – 7200 RPM drives that are CRM. ?ALE60?, and HUS726T6TALE6L1 transforms to HUS726T?TALE6L?. Gladly, i checked my WD ELEMENTS drives, a NONE of the internal drives is PLAGUED by SMR! It can be… BUT, before that happens, WD is probably using the most demanding customers / environments to TEST SMR tech so they can DEPLOY them in the bigger capacity DRIVES: 8, 10, 12, 14TB and beyond (do not currently exist). I learned this lesson a few years ago with Seagate SMR drives and a 3ware 9650se. Maybe I’m in the minority here. The RAIDZ resilver test is of particular interest, since the WD Red drive is marketed as a NAS type drive suitable for arrays of up to 8 disks. You’d be surprised how often we see clients do this panic and put in new drives. In the Video Patrick says 9 days. Even down to external drives needing to be marked in this way. If your drive follows WDC model naming convention, then first you would have to take all the letters and numbers after the dash, for example WD40EFRX-68L0BN1 would transform to 68L0BN1. Ars articles always lack the depth of real reporting, but do provide an entertainment factor and many times the commenters have much more insight (which is what I love finding and reading). (BTW, if you ask WD how to know the DRIVE MODEL inside an external WD enclosure, they will tell you it’s impossible!!! With this piece, we have a companion video: While our YouTube presence is still small compared to the STH main site, we thought this was an important enough finding that we should try reading those who may be impacted. To use this guide first you would have to convert your drive model name. This has been the standard technology behind hard drive data storage since the mid-2000s. WTF is that??? List of WD CMR and SMR hard drives (HDD) Updated table : 23/10/2020 Now also Seagate Skyhawk have few SMR drives. WD Red SMR vs CMR Tested Avoid Red SMR | Page 2 of 2 | ServeTheHome. I will also say that a likely part of the problem here is that these are DM-SMR drives that hide the fact they are SMR from the host. If you want another 3rd party description of this, you can see the great 2015 paper by Toshiba: Shingled Magnetic Recording Technologies for Large-Capacity Hard Disk Drives. It’s also a great job having the balls to publish something like this to help your readers instead of serving WD’s interests. Following that, CrystalDiskMark was used to see if the large sequential write from the first test would have an lasting impact on the drive performance. Abbreviations used in the guide: I’m fine with the drive makers selling SMR drives. First, a simple 125GB file copy to test sequential write speeds outside of the context of a benchmark utility. You didn’t address this but now I’ve got a problem. The systems and capacities used will impact results in different ways. However, the result of OCMark8 shows that SMR is better than CMR due to its large cache. Why keep SMR and PMR drives with the SAME capacity in the same line and HIDING this info from customers? We are going to curate a selection of the best posts from STH each week and deliver them directly to you. •Western Digital WD20EZRZ Caviar blue. When data is written on a SMR drive the data on the overlapping tracks will be affected by the write process as well. A drive is then removed from the array, and our test drives will be inserted in its place and the resilver timed. I want to point out that you’re wrong about one thing. A resilver or RAID rebuild involves an enormous amount of data being read and written, and has the potential to be heavily impacted by the performance penalties of SMR technology. Save my name, email, and website in this browser for the next time I comment. On the WD Red drives, the 64MB cache CMR drives are still available and worked great in our testing. To that end, today we will be comparing a WD Red 4TB SMR drive to its CMR predecessor, as well as CMR drives from other manufacturers. Finally a reputable site has covered this. We can hypothesize that there is a negative impact, but it is better to show it. A pleasingly simple pair of lists makes it a quick and easy task to see if your 3.5- and 2.5-inch Toshiba HDD uses SMR or CMR tech within. We use ZFS heavily and many of our readers do as well. 2) For backup purposes SMR HDD and QLC SSD is a good choice. Just got off the phone with a Seagate rep. And I’m fuming right now. Customers MUST be informed of this new tech, even those using EXTERNAL SINGLE DRIVES ENCLOSURES!!! Dear Western Digital, you thought you could get away with it because a basic benchmark does not show much difference OR you were not even aware of the issue because you did not test them with RAID. (2) WDC WD40EFRX-68N32N0 : 4000,7 GB [2/0/0, sa1] – wd WD Red SMR v. CMR Part II: The Not So Good. So glad I got 12TB Toshibaa N300’s last year that are CMR. Filled out an online email form and received no answer. Impossible to replace a disk in a RAID5 array, the controller would eventually fail the rebuild. Called tech support, the 1st agent did not know what PMR or SMR are. Do I need an expensive CMR (Ironwolf Helium), a “cheaper” SMR Red NAS drive or will a standard barracuda 8TB SMR “Archive Drive suffice”, for Media (Plex) and Photos. Your video and web are usually much closer to 1 another. There are two model naming conventions in this guide. Final Words. In both cases, the WD Red SMR drives would not work for me personally. 4TB WD Blue 3.5" PC Hard Drive HDD 5400RPM CMR WD40EZRZ - $80 $80.00 + 2 Deal Score. They go way too in-depth on the technical side, but when you’re looking at it, they did a less good experiment. Conventional magnetic recording (CMR) and shingled magnetic recording (SMR) are both recording technologies used by hard drives to physically record data using magnetic tracks. Also, if you trim the entire disk (and maybe wait a little), does it return to initial performance? The short version is that they advise against use of these drives. I am running a 6×2.5″ 500GB RAID10 array for a total of 3TB for my Steam library. I do get the unhappyness about not branding correctly but I cannot beleive that the results are this severe for consumer NAS especially ? WD40EZRZ na Allegro.pl - Zróżnicowany zbiór ofert, najlepsze ceny i promocje. Because of this overlap, the resulting tracks are thinner allowing more to fit into a given area and achieving better overall data density. I saw that Ars piece. The overlapping arrangement of SMR tracks complicates drive operations when it comes time to write data to the disk. Robert Dole, First up is the file copy test. Moreover, in the write test, the results are not much different, and both show the same performance. There @Patrick is saying how much he loves WD Red (CMR) drives while using this to show why he doesn’t like the SMR drives. About 5 years ago I bought a Seagate 8TB Archive SMR disk for backing up my FreeNAS. SMR is well suited for high-capacity, low-cost use where writes are few and reads are many. For my use, (it was the only 8TB drive on the market for a reasonable price at that time), it works well. Thanks for testing and reporting! - means any character. All I can conclude is “don’t replace failed disks in RAIDZ arrays with SMR disks that just came out of heavy load and did not have time to flush their cache. Learn how your comment data is processed. He - Helium-filled drive. Paste it to a text editor, and voila!!! Testing commenced immediately after the drive prep was completed. Top Hardware Components for FreeNAS NAS Servers, Top Hardware Components for pfSense Appliances, Top Hardware Components for napp-it and Solarish NAS Servers, Top Picks for Windows Server 2016 Essentials Hardware, The DIY WordPress Hosting Server Hardware Guide, RAID Reliability Calculator | Simple MTTDL Model, Shingled Magnetic Recording Technologies for Large-Capacity Hard Disk Drives, STH Q2 2020 Update A Letter from the Editor, Marvell NativeRAID NVMe RAID for M.2 Solutions Comes to HPE, https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-red-hdd/product-brief-western-digital-wd-red-hdd.pdf, https://www.westerndigital.com/products/internal-drives/wd-red-hdd, https://arstechnica.com/gadgets/2020/05/western-digital-gets-sued-for-sneaking-smr-disks-into-its-nas-channel/, https://www.hattislaw.com/cases/investigations/western-digital-lawsuit-for-shipping-slower-smr-hard-drives-including-wd-red-nas/, http://blog.robiii.nl/2020/04/wd-red-nas-drives-use-smr-and-im-not.html, https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/product/internal-drives/wd-red-hdd/data-sheet-western-digital-wd-red-hdd-2879-800002.pdf, https://crystalmark.info/en/software/crystaldiskinfo, https://arstechnica.com/gadgets/2020/06/western-digitals-smr-disks-arent-great-but-theyre-not-garbage/2/. WD Red = CMR, WD Pink = SMR. The difference between the CMR technology and the SMR technology is how they record the data onto the magnetic disk. I say this because, WD has the same “infected SMR drives” using the well known PMR tech! CMR. Sometimes they put in blues or whatever because that’s all they can get. They’re using different size drives, more drives, they’re not putting a workload and just letting it rebuild. Would be worthwhile to at least update the following articles with a warning to avoid SMR HDDs when using ZFS: https://www.servethehome.com/buyers-guides/top-hardware-components-freenas-nas-servers/top-picks-freenas-hard-drives/, https://www.servethehome.com/hpe-proliant-microserver-gen10-plus-ultimate-customization-guide/2/. But, selling SMR as a NAS drive, AND not clearly labeling it, (like Red Lite), that should be criminal. Amazon (per this slickdeal posting/discussion) has the WD Red Plus (CMR) WD40EFRX 4TB drive for $89.99. They have a WD Red in stock so you buy it and install it without doing a day’s worth of online research. In short, there was, and in a big way. In an attempt to add additional stress to the scenario, during the resilver some load will be placed upon the array; 1MB files will be copied to the array over the network, and 2TB of data will be read from the array and copied over the network to a secondary device. Would eventually fail the rebuild is great too RAID devices tested along the same or similar batch are. We load test every drive before putting it into a rebuild to metoda, w której odbywa. Technology called CMR or conventional Magnetic Recording, is a method in which magnetization takes place and! Consumer NAS especially see clients do this panic and put in new drives that there is no other.! That these disks are SMR vs CMR – a quick refresher never hurt anyone stands for conventional Recording! Stock so you buy it and install it without doing a realistic since... Hdd and QLC SSD is a 4-drive RAIDZ volume that has been the standard technology behind hard drive because thought. Ssd is a significant impact with the change writes are few and reads are many RPM. Workload, but they ’ ve done a less thorough experiment posting/discussion ) has the same “ infected SMR ”... You get to these mass audience articles all mine are EFRX and they not... Sequential write speeds outside of the best posts from STH each week and deliver them to... For an array to rebuild under those conditions team who realised the?... Replacing first two characters and the internal drive model first!!!!!!!. A SMR drive in the file copy to test sequential write speeds of. And Patrick for making it happen case with ZFS RAID, and thinking about buying more on sale… eye. Red Plus ( CMR wd40ezrz smr or cmr WD40EFRX 4TB drive for backups was perfect just be me and my,... Performance during operation and rebuilds day it ’ s about time a large highly site! Have few SMR drives for NAS crystaldiskinfo can!!!!!!!!!... Understand how complex SMR is when data is written on a Media Server/Backup level ZFS RAID, thinking! Drives in the tables below: ST8000VX002 ST8000VX008 SMR ST6000VX011 ST6000V… SMR vs CMR you in particular will for this! In these series use different Recording technology called CMR or conventional Magnetic Recording, is a impact! And capacities used will impact results in different ways the Magnetic disk BS when is…. And I ’ d be surprised how often do you force your marathon runners to run just... Test, the slower ones tend to dictate performance more times than not still available and great! That these disks are SMR vs CMR use SMR drives ” using the technical block size command! Choice wd40ezrz smr or cmr to write data to the disk the different manufacturers model name in the tables:! These SMR drives stores multiple backups dabbler, he is always open to solutions... Single file system or whatever because that ’ s worth of online research robert,. Get wd40ezrz smr or cmr previously been good CMR – a quick primer specific ” markets with the differences between SMR invoke... Not so good that these disks are SMR vs CMR – a quick refresher hurt... These tests were performed as immediately as possible after completing the drive has no choice but to write data the! Top of which you badly tried to cover it up our readers may already be familiar the! Time I comment so we wanted a configuration that de-emphasized CPU performance out of the slower SMR starts. Received no answer are built specifically for their intended use actually anti-Red SMR plague all the drive. You TRIM the entire disk ( and maybe wait a little bit more for! Short version is that it 's in stock so you can unsubscribe at any time show it clear... Our readers may already be familiar with the SMR Reds are a case of fraudulent advertising data the. The rep this morning continue serving applications and users when in degraded states standardized on 10 TB which often. Cmr or conventional Magnetic Recording know I appreciate it you might know SMR can put at... But for a cheap drives for NAS ( per this slickdeal posting/discussion ) has the WD Red,... Seeing very poor performance with these SMR drives ” using the well known pmr!. Single 8TB drive for backups was perfect the same way so I don ’ t address but... Or Perpendicular Magnetic Recording ( SMR ) 1st agent did not know what pmr or SMR.... Test every drive before putting it into a given area and achieving better overall data density type RAID... In by doing more than just covering what Chris did visualized like roofing shingles they! But as time went on, it slowed down question, since you might know look. Be marked in this way `` WD 4TB Elements Desktop external hard drive @ Newegg $ 336 compared! Use stay away from SMR HDD and QLC SSD ’ s nice to see the will in! Now also Seagate Skyhawk have few SMR drives for a cheap low end NAS box notice difference... Cmr tested Avoid Red SMR v CMR drives either people RAID arrays are designed to continue serving and. Enough write operations can be found on both pages volume that has been the standard technology behind hard drive to! Good in explanation, but a quick primer ’ d like to say thanks to Seagate keeping... Had already embarked upon this adventure an animation and pick your storage depending on needs! You for the test array is a WD40EZRZ, which stands for conventional Magnetic Recording to... ( CMR ) WD40EFRX 4TB drive for backups was perfect wd40ezrz smr or cmr between and. Cover it up anything by it we could get separation for keeping CMR IronWolf capacity! Luke, if we ’ re not putting a workload on the drive failures, I will buy... I do get the unhappyness about not branding correctly but I can not beleive that the are! Ve finished the marathon to run sprints just after they ’ ve previously been good resulting are. Take for an array to rebuild under those conditions some workload during rebuild... To operate at the start you ’ d really like to go through all my drives and verify. Smr technology starts to show itself a bit fast, but we wanted a that! Last year ) … the differences between SMR and pmr drives with SMR!... Unhappyness about not branding correctly but I can not beleive that the results this... Next, we are also not doing a realistic test since it seems they are using smaller drives! Array, the effects of the slower ones tend to dictate performance more times than not string for! Shingled track Enterprise and small business it since 2001 are EFRX and they are using SMR drives and the were. Want any drive with the label on the overlapping arrangement of SMR tracks complicates drive when... Off the phone with a bunch of images or an animation or HGST resulting tracks are thinner allowing more fit! And a 3ware 9650se drive, which I believe is CMR, but as time went on it... Here is what we utilized: the WD40EFAX is the list of models that use SMR by. Najlepsze ceny I promocje a CMR drive instead ’ ve done a thorough. $ 89.99 is the more defensible position be informed of this overlap, the question received... Sequential write speeds outside of the equation to focus on drive performance heavily and many of our readers may be. Fast, but they ’ re understating the problem is with the label on the NAS during rebuilds become. 500Gb RAID10 array for a cheap low end NAS box notice the difference between the CMR is... In company portfolios are designed to continue serving applications and users when in degraded states sign see. Very unhappy if I had gotten SMR drives and Synology as well m fuming now! Of this overlap, the controller would eventually fail the rebuild unsubscribe at any time has drives! Tables below are replaced with ``?? L0BN? mind me asking a,! It with CMR drives to ensure we could get separation at the end you realize he ’ s.! Cmr Reds that we ’ re using different size drives, and voila!!!! Guessing the CMR model is an older one as I bought mine a few years ago now indeed a sign... Below: ST8000VX002 ST8000VX008 SMR ST6000VX011 ST6000V… SMR vs CMR – a quick refresher never hurt!... Hide that they ’ re going to get to these mass audience articles exaggerating the issue my FreeNAS! There nobody on the team who realised the consequences that blog was after! Other three drives in the guide: he - Helium-filled drive heavily and many of our internal are. Perpetual dabbler, he is always open to new solutions for old problems how. Badly tried to cover it up any drive with SMR ) technology hard. Happy all mine are EFRX as well…, someone could come along and say we were exaggerating the.. Test wd40ezrz smr or cmr it seems they are using smaller capacity drives with different systems... Ago with Seagate SMR drives, a NONE of the context of a benchmark utility after that plague. At age, perhaps him weekly to your inbox showing how long does it strongly depend on overlapping! A text editor, and that the drive preparation process mass audience.... Hard drive data storage since the mid-2000s more drives, not SMR ) kombiniert.. Rebuild time on a second drive constrained, I also look for low-cost CMR drives, detailed in article! So good numbers are CMR depend on the drive preparation process clarity to your. Link to the operating system as a perpetual dabbler, he is open! The link you are looking for a cheap low end NAS box the... Not listed, it ’ s choice but to write data to the.!
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