slow WD Black 4TB performance

[DragonReborn]

recently got a new wd 4tb drive for storage and after running a few benchmarks something seems wrong. I have it connected to a 6gb port and here are my atto results:

http://tinypic.com/r/1zyc5uc/8

seems like it should be closer to 200mb from every review site i've seen. Any ideas on what could be causing the slow down?

 

[ashetos]

Just an idea: hard disk drives are faster at the beginning of the address space and slower at the end. This means that new data are faster when written/read from an empty drive than from a full one.

So the question is, did you benchmark an empty drive, or did you fill it up first?

 

[Soulkeeper]

wd hasn't gone to the 1TB platters on that drive, so closer to 165MB/s is the peak i've seen on most reviews

I dunno which model you have exactly, but the newest revisions have the new controller chip which helps a little FAEX vs. FZEX
http://www.storagereview.com/wd_black_4tb_desktop_hard_drive_review_wd4003fzex

your numbers seem about right, specially if you have the FAEX
other system/software considerations could bring your performance down a little

 

[Charlie98]

Looks OK to me... it's better than my Barracuda on a 6GB port.

 

[BrightCandle]

I don't know of any HDDs that achieve 200 MB/s, most of them are around 135MB/s on large transfers nowadays which is right where yours is. Looks bang on normal to me.

 

[DragonReborn]

hmm..ok, not sure which review i saw where drive was hitting closer to 200mb

any preferred HD benchmark software?

thanks!

 

[BFG10K]

I don't know of any HDDs that achieve 200 MB/s, most of them are around 135MB/s on large transfers nowadays which is right where yours is. Looks bang on normal to me.

My 1TB VelociRaptor is just a hair below, but I've seen other units online crack 200MB/sec.

Also the Seagate 1TB/platter drives can and I believe the new 1TB Blacks can, too.

 

[Soulkeeper]

yep, one of my seagate dm series hits 200MB/s
another one (same model different firmware/origin) does 185MB/s

I think the wd blacks are optimized more for max iops or random read/write than seq throughput

 

[AnonymouseUser]

hmm..ok, not sure which review i saw where drive was hitting closer to 200mb

Tweaktown shows it hitting 200MB/s, so as long as you have the same model (WD4003FZEX) hdd, with partitions properly aligned, and using the latest Intel drivers, it should be higher.