DSS V7 bad Performance

[JMC-Software]

Do you enabled Caching on the RAID controller?

We have the same performence issue with replication and failover.

IOMETER: (OpenPerformenceTest - Max Throughput 100% Read )
500 GB LUN, Block, Test on a Hyper-V Server

IOPS, MBPS, Response Time
Only one SAN, 17368.182502,542.755703,3.263848
with Replication: 15586.519347,487.07873,3.664976
with Failover: 15373.858457,480.433077,3.790156

[bwb]

i am using adaptative read ahead and write back on the controllers.
my problem is not solved at this time.

[Gr-R]

to optimize the raid:
-write policy: write-back caching
-read policy: read ahead
-Cache Policy: Cached
-Disk cache policy: Enabled

[JMC-Software]

Could you do an IOMETER test? Try to do a test without vr and with vr.
http://kb.open-e.com/How-to-dramatic...ance_1293.html