Hyper-V Cluster CSV Performance Slow!

[ChrisMiles]

well its interesting because the iSCSI network doesn't show at all in the Cluster Manager on both hosts.

 

You're not using that weird parallel iscsi port sharing crap that broadcom nics sometimes have are you?

[superaz300]

You're not using that weird parallel iscsi port sharing crap that broadcom nics sometimes have are you?

 

Hi Chris and Everyone,

 

Just as an update, I have managed to increase the performance slightly. I ended up installing VMware as a test over Hyper-V, and I was getting exactly near enough the same speeds as I was with Hyper-V, this told me that clearly there is an issue with the SAN itself. I managed to find the culprit (I think). The cache on the disk volume had a status of "Cache is enabled but currently suspended". Now, because the SAN I have was disconnected for a couple of years, the last battery recharge cycle said it was 2 years ago. I managed to find this command from here: https://www.dell.com/community/PowerVault/MD3620F-Cache-enabled-but-currently-suspended/td-p/5085397 which the command was "set storageArray learnCycleDate daysToNextLearnCycle=0;", this started a battery relearn cycle straight away. After 2 hours, the status changed to "cache enabled". Seem to be getting a solid 60MB inside my VM's now instead of 22MB. Still got stuff like Flow Control and Jumbo Frames to play with so maybe I can increase the performance.

 

I have decided anyways I am probably going to stick with VMware, using this as a test made me realise how much I miss it.

 

Just a big thank you to everyone's help and advice, I am probably going to leave this as closed now.

 

Best regards

James

[lmgtfy]

Hi Chris and Everyone,

 

Just as an update, I have managed to increase the performance slightly. I ended up installing VMware as a test over Hyper-V, and I was getting exactly near enough the same speeds as I was with Hyper-V, this told me that clearly there is an issue with the SAN itself. I managed to find the culprit (I think). The cache on the disk volume had a status of "Cache is enabled but currently suspended". Now, because the SAN I have was disconnected for a couple of years, the last battery recharge cycle said it was 2 years ago. I managed to find this command from here: https://www.dell.com/community/PowerVault/MD3620F-Cache-enabled-but-currently-suspended/td-p/5085397 which the command was "set storageArray learnCycleDate daysToNextLearnCycle=0;", this started a battery relearn cycle straight away. After 2 hours, the status changed to "cache enabled". Seem to be getting a solid 60MB inside my VM's now instead of 22MB. Still got stuff like Flow Control and Jumbo Frames to play with so maybe I can increase the performance.

 

I have decided anyways I am probably going to stick with VMware, using this as a test made me realise how much I miss it.

 

Just a big thank you to everyone's help and advice, I am probably going to leave this as closed now.

 

Best regards

James

Hi James, did you manage to increase it any further or was 60MBps the highest?