HPE EVA Storage

HP StorageWorks P2000 G3 MSA Dual Combo Controller FC/iSCSI LFF Array

 
Brunner Jürgen
New Member

HP StorageWorks P2000 G3 MSA Dual Combo Controller FC/iSCSI LFF Array

I operate a Dl580G5 with Xenserver 5.6.
The P2000 ist conected with 2x 8GB LWL HBAs, cross linked (no LWL Switch) with multipathing.
There are 8x300 SAS 15K discs in a Raid6 in the P2000.
I get very poor performance of 100MByte/s read
and 250MByte/s write at 8Kbyte (speed slowing down the less kbyte the test uses)
There is no second server.
my question: Is that normal speed for such a system? I suppose the speed lack in the two P2000 linux controllers or the cross-link.
How can I increase the system speed at all?

(I compared it to a raid5 with 3x300 SAS 15k in a MSA and a P400i controller: 450MB/s read and up to 800MB/S write.)