Hi,
We have a PS6010vx RAID 50 16 x 600 SAS 15K connected to 2 x Dell 8024f 10Gb switches. 4 x Dell 710 ESXi 4.1 running Dual Port broadcom 57711 Nics. Over the last month or so we experienced a bit of pain due to the drivers with the NIC's. This has been resolved and the system is stable. But I am not getting the IO Meter number I would expect. I am a bit reluctant to use MEM until I am convinced there are no issues with the system or the network.
Just confirming, Jumbo Frames enabled all the way through including LAG between switches, all iSCSI optimisation diabled, flow control on, Portfast enabled, Storm control disabled. (Using Software Intiator due to broadcom issue running Jumbo and TOE)
Currently the ESXi Servers are running RR, using iometer 2006 we are getting approx 190MB for 100% Seq Read at 32 K Blocks and around 300 for 50%Read /Write. We are achieving IOs of around 9000 and latency is around the 4-5ms
We have had various people look at the system but no real answers at the moment.
I have compared it to other SAN's I have installed at clients sites. The IOPs and the latency is fine but the throughput is where I would expect more.
EG - IBM 3512 split using 6HDD and 5HDD raid 5. 8 Gb Fibre I was getting around 600MB for the same IOmeter test. The 50%Read/Write Seq wasn't as dramatic increase around 400Mb compared to 300Mb. I have similar results with EVA 4100 and 4400.
I know for the EVA's RR implementation Best Practice was to change the RR IOPS
esxcli nmp psp setconfig --device --config "policy=iops;iops=1". There may be a similar setting for 6010, I have seen unofficially the IOPs settings change to 9 but nothing offical.
It would be great to see if anyone else can post their IOMeter results using PS6010vx or similar 10Gb environment with and without MEM.
Regards,
Joe