In the end it appears to be a case of getting what you pay for. I replaced the entry level E200 disk controller with the more upmarket P400 unit and can now get 150MB/s through the disks. The P400 supprts NCQ and also has a larger write cache. Seems to have done the trick. Cheers ________________________________ From: sunmanagers-bounces@sunmanagers.org on behalf of joe fletcher Sent: Tue 11/11/2008 11:41 AM To: sunmanagers@sunmanagers.org Subject: DL180s poor I/O performance Hi, Now I've got the Dl180s up and running I'm seeing relatively poor disk throughput. The machines use 7200rpm 500Gb SATA drives. Regardless of config I can't seem to get more than 40Mb/s through them. I've tried various kernel optimisations, ufs, zfs, single hardware LV, multiple hardware LVs Is this just a function of the SATA disks ( I can get 75Mb/s on a DL360 using 146Gb 15K rpm SAS drives even with no optimisation)? Must confess I've never SATA drives before and I can't seem to find any docs indication likely capability. I'm running Sol10 x86 u5 with cpqary3 v1.9.1 array drivers. Any info gratefully accepted. Cheers Joe _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagers _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagersReceived on Sun Dec 7 07:36:45 2008
This archive was generated by hypermail 2.1.8 : Thu Mar 03 2016 - 06:44:13 EST