DS3610 Slow Write Speeds

Patrick Murphy — Thu, 27 Jan 2022 14:08:53 GMT

I have a DS3610 Disk enclosure attached to a HP DL380 G10 with an E208e-p Smart Array running Centos 7. The disk enclosure is configured with 6 8TB SAS 7.2K LFF SC 512E DS HDDs in Raid 5 configuration. I am experiencing very slow write speeds to this array. I have patched the OS and applied the latest firmware. Below are the hdparm -tT and iostat results. The device is saturated based upon the iostat $util. What could be causing the slow write speed as given by the iostat w/s value? Any help would be appreciated.

hdparm -tT /dev/sdd

/dev/sdd:
Timing cached reads: 16072 MB in 1.99 seconds = 8079.71 MB/sec
Timing buffered disk reads: 122 MB in 3.06 seconds = 39.92 MB/sec

iostat -dxz 1

Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
sdd 0.00 256.00 0.00 120.00 0.00 6120.00 102.00 10.43 101.38 0.00 101.38 8.33 100.00

Re: DS3610 Slow Write Speeds

Parvez_Admin — Thu, 27 Jan 2022 14:05:30 GMT

Hello @Patrick Murphy

As there is no response to the query yet, I would recommend to directly contact technical support and log a support call for quicker resolution. Please refer the links below for support ticket options:

https://support.hpe.com/help/en/Content/supportAndOtherResources.html

https://www.hpe.com/psnow/doc/A00039121ENW

topic Re: DS3610 Slow Write Speeds in Disk Enclosures

DS3610 Slow Write Speeds

Re: DS3610 Slow Write Speeds