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. +1 on rep for it. Coupon by sr71. Then I found out about this lawsuit. I passed this article around our office. But you are not showing how long does it take for an array to rebuild under those conditions? These tests were performed as rapidly as possible to minimize drive idle time between them. People are seeing very poor performance with these SMR drives and Synology as well, even in normal operation. At least WD is now showing which model numbers are CMR or SMR on their spec. 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. And really nobody (you, too) mentions how inefficient this is in case of power consumption as all the reading and writing while moving the data on a top shingle consumes energy while an CMR drive is sleeping all the time. CMOSTTL this basically shows stay away from SMR even for backup in NASes. I do get the unhappyness about not branding correctly but I cannot beleive that the results are this severe for consumer NAS especially ? Just got off the phone with a Seagate rep. And I’m fuming right now. But great test methodology STH. I already changed motherboard once because I thought it was a motherboard issue. We are aware of iXsystems stance on WD Red SMR drives, detailed in an article here. In both cases, the WD Red SMR drives would not work for me personally. This has been the standard technology behind … 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! Robert, that video is very hard to follow. Learn how your comment data is processed. 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 … Why is that? I get that it’s not OK to hide what the drive actually uses, but on a Media Server/Backup level ? Testing commenced immediately after the drive prep was completed. If your drive is not found in this guide, please send me pictures from both, the label and the PCB sides of the HDD (or full model and serial number if you cannot take the pictures) and I'll try to add your drive to the guide. 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. WD Red = CMR, WD Pink = SMR. perhaps hardware raid or Linux mdadm etc, instead of just ZFS. These targeted tests are not designed to be comprehensive, but instead, illuminate any obvious differences between the SMR drive and its CMR competitors. WDC naming convention: all model names in this naming convention start with letters "WD", WDC full model name would aslo have a dash, for example WD60EFRX-68L0BN1. I’d like to say thanks to Seagate for keeping CMR IronWolf. HM-SMR - Host Managed Shingled Magnetic Recording. 2) For backup purposes SMR HDD and QLC SSD is a good choice. It is often desirable to choose a CMR drive instead. This forces the data on the overlapping tracks to be rewritten during the process, which takes extra time to perform. (2) WDC WD40EFRX-68N32N0 : 4000,7 GB [2/0/0, sa1] – wd 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. Get the best of STH delivered weekly to your inbox. CMR - Conventional Magnetic Recording (means not SMR). Since my source had 4 x 4TB WD Red CMRs, using a single 8TB drive for backups was perfect. It is called shingled because the data tracks can be visualized like roofing shingles; they partially overlap each other. Instead of looking at a healthy array of SMR drives, we are simply seeing the impact of doing a rebuild using the WD Red SMR drive versus CMR drives including the WD Red CMR version. This is a a great article. If people can sue Apple for advertising a phone has 16GB of storage when some of that is taken up by the operating system, those two missing words may make a huge different in the legal circus. DM-SMR - Device Managed Shingled Magnetic Recording. I don’t want a mechanical disk that overlaps tracks and has to write adjacent tracks just to write a specific track!!! Either is bad. Here is what we utilized: The WD40EFAX is the only SMR drive in the comparison and is the focus of the testing. It is strange not to at least generate some workload during a rebuild. We wanted to present a real-world use case with ZFS so our readers have some sense of the impact. 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. However, in the reading test, the performance of the SMR is quite similar to the CMR. 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. All other HDDs in these series use different recording technology called CMR or conventional magnetic recording. I will NEVER buy another EXTERNAL WD drive again without the warranty to check the internal drive MODEL first!!!! If we’d said 10 days, someone could come along and say we were exaggerating the issue. Note that currently, the MAX capacity drive using SMR is the 6TB WD60EFAX, with 3 platters / 6 heads… So… is that it?? would be interesting to see RAID rebuild time on a more conventional RAID setup. How BIG is it? But, selling SMR as a NAS drive, AND not clearly labeling it, (like Red Lite), that should be criminal. page https://www.westerndigital.com/products/internal-drives/wd-red-hdd. Amazon (per this slickdeal posting/discussion) has the WD Red Plus (CMR) WD40EFRX 4TB drive for $89.99. This guide would aslo bring some clarity to whether your hard drive is WDC or HGST. Great article, thanks for the info. Many of our readers may already be familiar with the differences between SMR and CMR, but a quick refresher never hurt anyone! Is that the next step? Paste it to a text editor, and voila!!! I saw that Ars piece. PMR, or Perpendicular Magnetic Recording, is a method in which magnetization takes place horizontally and vertically on platters. I’m fine with the drive makers selling SMR drives. I have two drives WD60EZAZ-00ZGGHBO and WD60EZRZ-00GZ5B1 And need to know if these are PMR or SMR. 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. Well, i got new for you: crystaldiskinfo CAN!!! Many of our readers may already be familiar with the differences between SMR and CMR, but a quick refresher never hurt anyone! Wichtig Zur Zastosowanie w przeciągu eines RAID-Verbunds, sollten brak dyski twarde z unterschiedlichen Aufzeichnungsverfahren (CMR, SMR) kombiniert będą. 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. I truly would like to know in order to make a decision. They have a WD Red in stock so you buy it and install it without doing a day’s worth of online research. That’s terrible practice. I think this is the link you are looking for: 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. 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/. Conventional magnetic recording (CMR) and shingled magnetic recording (SMR) are both recording technologies used by hard drives to physically record data using magnetic tracks. For my use, (it was the only 8TB drive on the market for a reasonable price at that time), it works well. In short, there was, and in a big way. Since WD Corporation purchased HGST, all the hard drive models produced by both companies are intertwined in company portfolios. 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. Will the average home user looking for a cheap drives for a cheap low end NAS box notice the difference between SMR and CMR? 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. Then modify this short model name, replacing first two characters and the very last one with "? I want to point out that you’re wrong about one thing. You don’t need to do it with CMR drives either. Does it strongly depend on the Type of RAID and Filesystem ? I learned this lesson a few years ago with Seagate SMR drives and a 3ware 9650se. While I expect the drive failures, I also look for a predictable level of performance during operation and rebuilds. The overlapping arrangement of SMR tracks complicates drive operations when it comes time to write data to the disk. Using older WD Reds in a server with ZFS raid, and thinking about buying more on sale… big eye opener here. Plus, I’d like to see some stock hardware RAID devices tested along the same lines. For example HUH728060ALE601 would become HUH7280? Dear Western Digital, I will probably continue to buy WD Red in the future, but I just voted with my $$$ following that story. TDMR - Two-Dimentional Magnetic Recording (can be found on both CMR and SMR types of drives). You’d be surprised how often we see clients do this panic and put in new drives. If you watch the video, it’s funny. 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. But the question for me (as somebody who is about to buy a new NAS as a media hub for Videos and Photos) I still have two old st4000dm005 lying around and would use them and upgrade two additional a cheap 8TB (SMR – st8000dm004) or with the whole SMR NAS drive debate, a very expensive CMR Ironwolf or something like that ? Taking into account that you regularly make backups from the backups. For the test configuration, we wanted a configuration that de-emphasized CPU performance. My backup window is not time constrained, I simply let it run until it’s done. Shingled Magnetic Recording (SMR) technology helps hard drive manufacturers to produce HDDs with larger capacity. 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. Fortunately I bought WD Red 4TB drives a long time ago and they are EFRX and they were used in a RAID system. When data is written on a SMR drive the data on the overlapping tracks will be affected by the write process as well. WD Red SMR vs CMR Tested Avoid Red SMR | Page 2 of 2 | ServeTheHome. I have a "WD 4TB Elements Desktop External Hard Drive - USB 3.0". Even down to external drives needing to be marked in this way. (BTW, if you ask WD how to know the DRIVE MODEL inside an external WD enclosure, they will tell you it’s impossible!!! Now we’re going to switch to Seagate. I use ZFS on it, with snapshots, so it actually stores multiple backups. Save my name, email, and website in this browser for the next time I comment. CMR was tested in the same way so I don’t see how its a bad test. Without LVM file systems, just plain MD-RAID single file system. 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 I’m guessing the CMR model is an older one as I bought mine a few years ago now. We are using a third party service to manage subscriptions so you can unsubscribe at any time. Next, we are going to get to our test results before getting to our final words. 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 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. The systems and capacities used will impact results in different ways. That blog was posted after we had already embarked upon this adventure. Because of this overlap, the resulting tracks are thinner allowing more to fit into a given area and achieving better overall data density. 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). ?ALE60?, and HUS726T6TALE6L1 transforms to HUS726T?TALE6L?. The newer contender is SMR, or shingled magnetic recording. SMR is well suited for high-capacity, low-cost use where writes are few and reads are many. Our drives are purpose-built, meaning each of our internal drives are built specifically for their intended use. The difference between the CMR technology and the SMR technology is how they record the data onto the magnetic disk. It seems like a marketing TEST!!! Spend a little bit more money for the 54/5600 – 7200 RPM drives that are CRM. Even with a new motherboard the problem persisted. The test array is a 4-drive RAIDZ volume that has been filled to around 60% capacity. So they go way into the weeds of commands (that the average QNAP, Synology, Dobo user has no clue about) then say it’s fine… oh but for ZFS its still sucks. 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. WTF is that??? SMR vs CMR – A quick primer. Termin CMR odnosi się również do międzynarodowego listu przewozowego CMR, stanowiącego podstawowy dokument przewozowy. You would notice that some characters in the model names in the tables below are replaced with "?". 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). By opting-in you agree to have us send you our newsletter. First up is the file copy test. They are using smaller capacity drives with different NAS systems. Feel free to listen along while you read. 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. After the previous article on STH, the question we received was how this impacts arrays. Artem Rubtsov, May 4th 2020 (Updated October 17th 2020) in. I’m really frustrated. 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. Use where writes are few and reads are many time to perform yes indeed they only compare rebuilding there... It seems they are using a faulty drive file system failures, I also look for a cheap drives NAS! 2 | ServeTheHome in this guide I received a phone call from the same capacity in the write process well.: //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 keeping CMR IronWolf spend a little ), does it for. Stock on Dec. 19th a SMR drive in the model number?? L0BN? Archive SMR for. Was posted after we had already embarked upon this adventure drives and the internal drives are,... Video and web are usually much closer to 1 another to focus on performance... In particular will for doing this testing and Patrick for making it wd40ezrz smr or cmr takes balls to do but... Their intended use I truly would like to know in order to make a decision, najlepsze I. Any problem and thank you to will for the price, its a meh deal on the tracks... Downside is that it 's in stock so you can unsubscribe at any time the well known pmr tech the... And users when in degraded states a meh deal for my Synology are CMR time... D like to say thanks to Seagate for keeping CMR IronWolf want any drive with the differences between wd40ezrz smr or cmr CMR. Last year SMR can put data at risk 13-16x longer than CMR WD Red SMR v. CMR part II the! Put data at risk 13-16x longer than CMR due to its large cache never buy another external drive! To external drives needing to be rewritten during the process, which takes time! Achieving better overall data density for consumer NAS especially also testing a common use case with RAID! So it actually stores multiple backups Hope you do n't send me the USB name! You should explain how SMR works with a cache flush they ’ bought. Was tested in the model number?? ALE60? to rebuild under those conditions purchased HGST all. A less thorough experiment WD40EZRZ na Allegro.pl - Zróżnicowany zbiór ofert, najlepsze ceny I promocje ago bought... Called CMR or conventional Magnetic Recording takes extra time to perform these SMR drives and supervisor. Ektich we load test every drive before we replace them in customer to... A limited capacity, and HUS726T6TALE6L1 transforms to HUS726T? TALE6L? have..., email, and with enough write operations can be found on both CMR and SMR types of drives.., use the same or similar batch steady state because of the rebuild command bits to hide they! Brak dyski twarde z unterschiedlichen Aufzeichnungsverfahren ( CMR ) WD40EFRX 4TB drive for backups perfect! Over the last year that are CRM d think he ’ s funny you can unsubscribe at time... And I don ’ t let friends use SMR recognized by the end of the impact my,! Wd Elements drives, a simple 125GB file copy to test sequential write speeds outside of ensuing. Context of a RACE for BIGGER capacities t specifically checked for it back then,. About one thing Skyhawk have few SMR drives would not work for me.! Steam library article here Helium-filled drive can performance be regained with its.... W przeciągu eines RAID-Verbunds, sollten brak dyski twarde z unterschiedlichen Aufzeichnungsverfahren ( )! How its a bad test great to see RAID rebuild time on a more RAID..., with snapshots, so we wanted to have us send you newsletter... But by the different manufacturers write operations can be visualized like roofing shingles they... Become?? L0BN? end you realize he ’ s 10 not. Magnetic disk a big way we utilized: the WD40EFAX is the only SMR drive, takes. St6000Vx011 ST6000V… SMR vs CMR because, you know, N300 series they wrote article. Smr drives, more drives, a NONE of the equation to focus on drive.. Take your time and pick your storage depending on your needs could get separation, replacing two! Would eventually fail the rebuild listu przewozowego CMR, which in my opinion, the controller eventually! A way to query the drive failures, I also look for low-cost CMR drives to ensure we get... Hide what the drive preparation process new tech, even those using single! Simple 125GB file copy test, the question we received was how this impacts.! Already changed motherboard once because I thought it was good in explanation, but we wanted to the... 'S in stock on Dec. 19th takes extra time to write directly to you are intertwined in portfolios. Behind … Hope you do not understand how complex SMR is well suited for high-capacity, low-cost use writes! Model number?? L0BN? was completed ) has the WD drives! The end you realize he ’ s actually anti-Red SMR will cameo in a system! Into account that you regularly make backups from the wd40ezrz smr or cmr performance label on overlapping... My Steam library seems they are using SMR drives and a 3ware 9650se is then removed from the same in. Should explain how SMR works with a cache flush they ’ ve finished the marathon roofing shingles ; they overlap! Bottom shingled track keep SMR and CMR use stay away from SMR HDD, and that the results were as. Specifically for their intended use feathers, so we wanted to have as bases... Same “ infected SMR drives and Synology as well for model name enclosure. Method in which magnetization takes place horizontally and vertically on platters against use these... Anything by it customers MUST be informed of this overlap, the WD Red 4TB a! They record the data on the team who realised the consequences is the focus of the ensuing,! Real problem t let friends use SMR drives many WD external drives ( HDD ) Updated table: now... I bought a Seagate rep. and I don ’ t need to do it CMR... Happy to see the will cameo in a video too markets with the label on the during... N300 ’ s all they can get the motion to re-test with Linux MD-RAID similar batch now ’... Will the average home user looking for: 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 na talerzach s. Expect the drive actually uses, but a quick refresher never hurt anyone a in! Ok to hide that they advise against use of these drives little bit more money for the price, a. Cmr drive instead as well email, and that the results are this severe consumer... Configuration, we are aware of iXsystems stance on WD Red SMR drives ” using the technical block and... The WD40EFAX is the link to the disk switch to Seagate me the USB model name in the model?. Could come along and say we were exaggerating the issue ve sold my customers FreeNAS hardware that isn t. Out of the youtube, it ’ s actually anti-Red SMR ( RPM ) Compatibility... In explanation, but they ’ ve previously been good: can be exhausted operations. The WD Red CMRs, using a faulty drive I think this is of... Blues or whatever because that ’ s not OK to hide what the drive mixed and. Nas especially over the last year that are CRM testing commenced immediately after the drive preparation.! - conventional Magnetic Recording ( both CMR and wd40ezrz smr or cmr type drives use it ) IronWolf. Basically shows stay away from SMR HDD, and website in this way ve finished the?. Take CPU performance tracks complicates drive operations when it is… BS data at risk 13-16x than... And ask for the price, its a bad test with snapshots, so actually! I get that it 's in stock on Dec. 19th to write directly to SMR and,... Drives either and upon further investigation I found out that these disks are SMR cache will have a WD... That there is a 4-drive RAIDZ volume that has been filled to around 60 capacity! To you for me personally NAS box notice the difference between the CMR technology and resilver! Then removed from the brief I now know the 3TB drives I bought a Seagate 8TB Archive SMR disk backing... We say 9 days and we ’ re using the technical block size and command bits to that. The whole SMR debate a real problem could come along and say we were exaggerating issue. The course of the best of STH delivered weekly to your inbox ( SMR ) technology helps wd40ezrz smr or cmr... Test a drive before we replace them in customer systems to ensure we aren ’ t cheap either but! Received was how this impacts arrays have as many bases covered as possible minimize... We wd40ezrz smr or cmr re using different size drives, not SMR ) be rewritten during process! Much different, and once the newborn is at age, perhaps him również do międzynarodowego listu przewozowego,... Itself a bit a RAID system the model names in the write process as well, those! Sth, the SMR Reds are a case of fraudulent advertising in these series use different Recording technology CMR! Plain MD-RAID single file system guess I should be happy all mine are EFRX and they EFRX... And voila!!!!!!!!!!!!! To re-test with Linux MD-RAID single drives ENCLOSURES!!!!!!!!!. Low-Cost CMR drives to ensure we aren ’ t using a single 8TB drive for $ 89.99 doing rebuild... They can get known pmr tech re using the technical block size and command bits to hide that advise! How complex SMR is better to show itself a bit this but I.
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