Hello

I'm running all my servers on a SAN DSS V6 (Dell PE2950 + Dell MD1000). Performance are good.

Now i have to setup a new SAN with DSS V7.
This V7 SAN is installed on exactly/identical configuration as the V6 SAN.

Config
Dell PE 2950 + Dell MD1000 + 4 x SAS 15k 300GB Raid 10 (Read ahead + Write back) on Perc 6 (this is the test datastore)
DSS V7 + 2 GB NIC for MPIO
ESX 5.1 + 2 GB NIC for MPIO + policy RoundRobin 1 iops
no jumbo frame
target SCST, block/io


the V7 SAN is running with twice less performance than the V6 SAN.

what i have to check now ?


Thanks