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We reached out to WD and we were furnished with the following reply by Yemi Elegunde, Enterprise & Channel Sales Manager Western Digital UK: Shingled magnetic recording (SMR) is a hard drive technology that efficiently increases areal density and capacity for users managing increasing amounts of data, thus lowering users’ TCO. In a traditional RAID1/5 rebuilt the drive is sequentially rebuilt from start to end. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Condé Nast. To get a better handle on the situation, Ars purchased a Western Digital 4TB Red EFAX model SMR drive and put it … ... We put Western Digital’s dreaded SMR Red drive to the test. Help Others! When asked why has Western Digital excluded a recording type specification in the datasheet specifications, Yemi stated: Most of our customers choose our drives based on specific performance attributes of their use cases, such as transfer and workload rates, and it is our goal to make that information very clear on all of our materials. List of hard drives using SMR technology. "We do not have any SMR drives in our Ironwolf and Ironwolf Pro drives, which are NAS solutions [...] we don't recommend SMR for NAS.". WD Red capacities 2TB-6TB currently employ device-managed shingled magnetic recording (DMSMR) to maximize areal density and capacity. In sharp contrast to Western Digital's position on SMR disks as NAS, Seagate executive Greg Belloni told us that there weren't any SMR disks in the Ironwolf (competitor to Western Digital Red) line-up now and that the technology is not appropriate for that purpose. We are continuously innovating to advance it. The two companies most flagged and castigated by technology watchers, pundits and commentators, Western Digital and Seagate, have begun to respond and clarify which models use SMR, and which (in our opinion) should, therefore, be avoided unless price-per-gigabyte is more of a factor in a purchasing decision than read and write speeds. The fact that WD is stating that these capacities of WD Red (2,4,6TB) use Drive Managed SMR is better than we first thought, it is still off that it is not a factor presented in their datasheets and technical literature. This is getting absurd. CNMN Collection Old pool was 4 x WD30EFRX and new pool is 2 x WD30EFRX + 2 x WD60EFAX After some experienced issue around performance, i discover that WD60EFAX use a PMR technlogy as mentioned only on the Synology Products Compatibility List with this recommendation: Due to the characteristics of SMR, this SMR drive … Host-managed SMR requires host-software modification so that the host system has knowledge of the underlying media and can micro-control all elements by employing a new set of commands. Western Digital has seen reports of WD Red use in workloads far exceeding our specs and recommendations. A firmware upgrade is not possible, as this is a physical build matter and likewise, simply swapping all the drives over is not an option (if indeed necessary) as these drives are likely being used in RAID groups that require gradual and time occupying individual drive replacement and rebuilding/resilvering. It’s that we DO understand it, and that WD has added it to drive models that didn’t have it before, in lines where it is COMPLETELY inappropriate. All our WD Red drives are designed to meet or exceed the performance requirements and specifications for common and intended small business/home NAS workloads. Oct 24, 2018 ⁄ HDD, SMR, Surveillance. Back in 2016 we performed speed test on Seagate SMR Archive drives and found them to be good as a standalone drive, but unsurprisingly lacked the robust group utility of RAID use overall: Additionally, Right the way back in 2015 (almost right at the start of the SPANtv YouTube Channel history in fact) we discussed the difference between the larger HDDs that were coming to market that used either SMR or Helium Based storage capacity. Ars may earn compensation on sales from links on this site. The 8TB and larger drives with the “EFAX” code use CMR technology. Add question anonymously on Q&A forum. In contrast to drive-managed SMR, host-managed SMR is an implementation where the host is responsible for everything ranging from managing data streams, to read/write operations and zone management. While SMR allows for greater areal density (i.e., higher drive capacity), it’s inherently inferior to PMR/CMR based on the way it writes data. All other HDDs in these series use different recording technology called CMR or conventional magnetic recording. Again, we know you entrust your data to our products, and we don’t take that lightly. Although Western Digital does not, to the best of our knowledge, have an official policy regarding replacement of Red drives unknowingly purchased with SMR, several readers have shared their individual success stories of getting Western Digital's customer care department to replace such disks with non-SMR disks free of charge. One of those innovations is Shingled Magnetic Recording (SMR) technology. Western Digital begins mending fences in WD Red NAS drive SMR spat – Blocks... Western Digital has heralded a positive shift in its approach to users of shingled WD Red NAS drives, via a short statement on the company blog. Jim Salter You must login or create an account to comment. As such, host-managed SMR allows for a smooth, staged transition to Host-aware SMR in a future timeframe. Tom’s Hardware compares this blip in info sharing to an SSD manufacturer selling a drive with cheaper NAND (e.g. 15TB HDD – Taking Big Data Capacity to the Next Level. WIRED Media Group Commercial Internal Drives | Western Digital All three of the surviving conventional hard drive vendors—Toshiba, Western Digital, and Seagate—have gotten caught sneaking disks featuring Shingled Magnetic Recording technology into unexpected places recently. WD Purple 8TB, 10TB, 12TB, 14TB & 18TB drives are designed to support Deep Learning analytics in AI capable NVRs, and feature an enhanced workload rating of up to 360TB/yr Jim Salter. Western Digital 1TB WD Blue Mobile Hard Drive - 5400 RPM Class, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX Seagate FireCuda 1TB Solid State Hybrid Drive Performance SSHD – 2.5 Inch SATA 6GB/s Flash Accelerated for Gaming PC Laptop - Frustration Free Packaging (ST1000LX015) With a supported workload rate of up to 180 TB/yr1 and support for up to 64 cameras, WD Purple drives are optimized for surveillance systems. WD Red HDDs have for many years reliably powered home and small business NAS systems around the world and have been consistently validated by major NAS manufacturers. Smr or DMSMR [ ] ).push ( { } ) ; Shop year end deals Servethehome tested of. Re-Write on altered blocks File sharing is largely a one man operation and any all... 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