12 Replies Latest reply on Dec 2, 2015 9:52 AM by digitalnomad

    Datastore / Disk latency problems with HP ProLiant DL380 G7 - HP Smart Array P410i controller after SPP 2014.09.0 / hpsa-5.0.0.74 update

    Honzze Lurker

      Hello,

       

      we are currently investigating massive datastore and disk (mainly READ) latency problems on some of our HP ProLiant DL380 G7 with the P410i (BBWC) controller.

      It all started after our regular half-year update cycle for ESXi 5.1 U2 to:

       

      - ESXi510-201407001 (no problems)

      - hp-esxi5.0uX-bundle-2.1.1-2 (no problems)

      - hp-HPUtil-esxi5.0-bundle-2.1-15 (no problems)

      - hpsa-5.0.0.74 (driver) & SPP2014.09.0 (- problems started)

       

      It is not a permanent increase in read latency, but insted peaks occour which trigger alerts in Veeam. Datastore read latency rises from about 5 ms to 100 ms as soon as this happens, but after a few seconds everything is back to normal. Those particular datastores are RAID5 (but we've seen some alerts on RAID1 also), have read and write cache enabled and the most affected machines are those with the LOWEST usage.

       

      We have some WinServer2012R2 RDP for a low number of Sessions (less than 5) - there is no noticeable delay upon working on these.

       

      Maybe someone of you has experienced a similar behavior after applying the latest updates to HP ProLiant Servers. We don't have a clue on what to try next, a SPP rollback isn't possible, maybe the driver, but we've got to find the correct predecessor, since one of the older 2014 HPSA drivers leads to PSOD on the Host.

       

      Best regards,

      HZ