Sequential Read Performance

The sequential read test requests 128kB blocks and tests queue depths ranging from 1 to 32. The queue depth is doubled every three minutes, for a total test duration of 18 minutes. The test spans the entire drive, and the drive is filled before the test begins. The primary score we report is an average of performances at queue depths 1, 2 and 4, as client usage typically consists mostly of low queue depth operations.

Iometer - 128KB Sequential Read

While the SanDisk X400 tied the best MLC SSDs for sequential read speed, the WD Blue is merely average overall.

Iometer - 128KB Sequential Read (Power)

The WD Blue draws slightly less power than the X400, but given the size of the performance regression the WD Blue is actually less efficient for once.

The WD Blue seems to hit a performance plateau that is a bit shy of saturating the SATA link, and then it slows down at the highest queue depths.

Sequential Write Performance

The sequential write test writes 128kB blocks and tests queue depths ranging from 1 to 32. The queue depth is doubled every three minutes, for a total test duration of 18 minutes. The test spans the entire drive, and the drive is filled before the test begins. The primary score we report is an average of performances at queue depths 1, 2 and 4, as client usage typically consists mostly of low queue depth operations.

Iometer - 128KB Sequential Write

The WD Blue has a faster sequential write speed than the X400, but doesn't quite catch up to the OCZ Trion 150. Most MLC and 3D TLC drives are significantly faster than the planar TLC drives.

Iometer - 128KB Sequential Write (Power)

The WD Blue draws more power than the SanDisk X400 during the sequential write test, but it is justified by the improved performance. Efficiency is still only good by planar TLC standards.

The WD Blue's sequential read speed is constant across all queue depths, without even an increase from QD1 to QD2.

Random Performance Mixed Read/Write Performance
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  • Decoherent - Friday, October 14, 2016 - link

    There aren't a lot of reasons to use vendor-specific software (which often sucks) when you can use Macrium Reflect's free version, which is much more powerful. It's helped me sort out some other weird problems, too, such as fixing wrong UEFI entries that I couldn't figure out.
  • jwcalla - Tuesday, October 11, 2016 - link

    I don't think I would trust WD anything when it comes to storage.
  • BrokenCrayons - Tuesday, October 11, 2016 - link

    Why not? This is just a SanDisk drive with a few minor firmware tweaks. Besides that, WD was the industry leader before SSDs were a thing. Sure picking between Seagate, Quantum, Maxtor (omg that 4.3GB Bigfoot drive...how I missed your 3 months of dog slow performance before you started making the click o' death), and WD (I guess Toshiba and Hitachi too) was like picking between which rusty razor you'd prefer to slit your wrist with, but at least with WD drives you clould get a good gusher going before the blade broke.
  • LordConrad - Tuesday, October 11, 2016 - link

    I loved the Quantum Bigfoot, it was as great way to increase capacity for storage drives without having to wait for aerial density to increase.
  • BrokenCrayons - Tuesday, October 11, 2016 - link

    Oh the idea was sound. Going back to a 5.25 inch chassis to increase capacity seemed like a decent idea even though we'd long ago shifted to 3.5 inch drives. The problem with the Bigfoot was reliability. I had one I personally owned die on me and quite a few we sold to customers (12GB models) came back dead within less than 6 months. I remember all the hassles of getting RMAs done for those things. On the other hand, Quantum's 3.5 inch drives seemed fairly reliable. I wonder if there was a problem with heat expansion doing bad things to the read/write heads due to the larger platter size. It wasn't a problem with older 5.25 inch hard drives because they were usually full height and ran at a lower RPM than the Bigfoots.
  • LordConrad - Tuesday, October 11, 2016 - link

    I don't even remember what speed they ran at. Was it the full 5400rpm, or something slower like 5200 or 4900?
  • BrokenCrayons - Wednesday, October 12, 2016 - link

    I don't remember all the specs and had to look them up. The originals and the CY series ran at 3600 RPM and the TX, and TS series brought it up to 4000. If I recall correctly, when the Bigfoot was still in retail channels, a lot of 3.5 inch drives were ticking along at 3600 to 4200 RPM. 5400 RPM drives came along later and I don't know if Bigfoots were even in production when they were being sold as high performance storage solutions (well, non-SCSI drives anyhow...spindle speeds for SCSI devices were quite a bit higher).

    This is half from memory and the rest was from a couple of quick web searches so take all that with a grain of salt or two. I could be a bit off as it's been a long time.
  • mikato - Tuesday, October 11, 2016 - link

    "I don't think I would trust anything when it comes to storage."
    That's better. Have backups that work.

    But anyway, why all the dumping on WD? I don't think it is warranted.
  • barleyguy - Tuesday, October 11, 2016 - link

    There have been many periods in the past where WD had very high failure rates. Because of that, many of us that have been around awhile have been bit in the butt by WD and don't trust them anymore. In the late 90s and early 2000s for instance, WD's failure rate was so high they had a wait queue and callback system set up for RMAs.

    That said, I think for last few years WD has been very good, so maybe it is unwarranted in the short term.

    In particular I really like the WD Blue. They aren't fast, but they seem to be a very reliable drive, and throwing them in a RAID array with an SSD boot disk results in a pretty solid system.
  • Gigaplex - Tuesday, October 11, 2016 - link

    Their main competitor, Seagate, has also had very high failure rates. Mikato was correct, don't trust any of them. There's no need to dump on WD more than the others.

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