For those googling for the answer whether combining WD EFRX and WDEFZX (WD40EFRX and WD40EFZX in my case) would be safe. I actually have a similar problem with a My Cloud EX2 Ultra NAS with drive 2 being (SMART) reported as in impending Fail state. Compatibility: Unlike desktop drives, these drives are tested for compatibility and optimum performance.

Silent PC Review has been providing expert advice and detailed reviews of PCs and peripherals since 2002. WD Red hard drives are designed to perform under tough conditions encountered in high-intensity 24x7 multi-user NAS environments. Hitachi/HGST are mostly known for both excellent reliability and good performance and many of us found it sad that WD killed the brand but think it's reassuring that the technology is reused in WD products.Right now all (Seagate, WD and Toshiba) of the major manufacturers have been selling SMR without clearly branding them as such. Now i noticed that a new WD Red Plus line has entered the market in 2021, namely the EFZX series with 128mb cache instead of 64mb cache currently used by the EFRX series. I should mention that the array is an 8 x 6TB WE60EFRX in RAIDZ2, that is used as a backup server/media library and file storage in home. We’ve partnered with Ontrack to provide protection for routine and extreme data loss scenarios such as drive failure, viruses, and software issues. Note that the width of the access time graph is about 8ms which is the max rotational latency of a 7200 RPM drive.

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.

Just noticed in my original post that I wrote it was a WD40EFRX disk failing, but it was a WD30EFRX in my case but it shouldn’t make any difference, just different size. is from the same family and all the fields from the found table row are valid for it, meaning model WD60EFRX-68L0BN1(6TB) and WD40EFRX-00L0BN0(4TB) are from the same family. I assume that you use some kind of RAID and while the WD60EFAX will slow your RAID down, it's still the gigabit networking that's the bottleneck in your TS-451+ so you shouldn't be noticing any performance difference from your client devices. With currently about 6-7 tb of data I had decided that once I reached 9tb in the near future I was going to purchase a DS1819+ and migrate all the existing drives to it so I could expand the volume further.

WD Red™ drives are optimized for environments where idle time is available to perform necessary background operations. The new disclosure comes on the heels of WD's blog post yesterday that outlined its stance on using SMR drives. When it comes to data recovery one of the most common problems Western Digital WD60EFRX Hard Disk Drive experience is burnt circuit board(PCB). Or of course third option would be to slowly replace all three of the exsisting WD60EFRX drives I have with the newer WD60EFAX SMR version one by one.

If it's true that the newer 6 TB WD Red are also HGST inside, then obviously that specific low power technology isn't the best. These new drives seem to be an upgraded version of their older CMR drives that used the same recording technology.

similar to the Seagate Iron Wolf - with the Iron Wolf Pro being for larger arrays and the Exos being for the largest arrays. Even if all disks in the RAID 5 are slowed down the striping advantage should still keep aggregate RAID performance higher than that I think, at the very least on reads.The company contends that SMR technology is adequate for the applications the drives are designed for, but that is certainly an open matter of debate with many users claiming the drives cause problems in RAID arrays.