New XSAN speed issue - help please
I have just configured a new 90TB XSAN. With two MDC's and two clients resharing via AFP. Running 10.6.8 and XSAN 2.2.2
Extended atts are off, as is Spotlight.
Setup using four new XServes, Three QLogic 5802's - stacked, Three Active Storage RAIDS.
The SAN is fully operational but I am not getting the speed I think I should be seeing.
If I run a test on an XSAN client using time mkfile I see a 10GB file takes 3minutes 52seconds to be created. Through AFP the timing is oddly better at 2minutes 30 seconds.
I cannot see anything odd in the logs, the RAIDS look fine and nothing appears out of order.
DNS is working and providing lookup addresses on the main and meta data network including full reverse lookups. I am seeing ping times between clients of approx 0.400 ms give or take to either the meta data addresses or main addresses.
I have the SAN configured as the following:
RAID 1 - Metadata and Journal on RAID 1 with the two RAID 5 LUNS
RAID 2 - Two RAID 5 LUNS
RAID 3 - Two RAID 5 LUNS
I have these split into three pools, the two LUNS from the first RAID into pool 1 the second and third raid into their own pools.
I have the volume set to balance 16k allocation strategy using the XSAN config to create a standard file setup.
What sort of speed should I expect to get from the SAN? Am I seeing the correct speed?
I was expecting something circa 500MB/s not what I seem to be seeing of 4MB/s
What is a suitable method of testing for this? is time mkfile adequate?
Anybody who can help or point me in the right direction please. This has come to light as an application is unresponsive reading data as I believe its getting it too slowly.
Thank you in advance!