topic Re: Reboot Single Node in StoreVirtual Storage

Reboot Single Node

Conky — Wed, 19 Oct 2016 04:14:20 GMT

Hi all,

I have a four node p4500G2 cluster in NR5, LeftHand OS12 on each node and esxi 5.5 on the hosts. I discovered one of the nodes has the raid cache incorrectly set and is causing bad io latency.

Same issue as mention here;

https://blog.mrpol.nl/2013/07/02/high-write-latency-on-hp-storevirtual-environment-with-vmware-vsphere-5-1/

My question is can i reboot the single node via the cmc so i can get into the cache settings without affecting the running vm's ?

Thanks

Re: Reboot Single Node

oikjn — Wed, 19 Oct 2016 12:51:53 GMT

The short answer is, yes. Just right click on the node in CMC and there should be a shutdown/reboot option.

I'd suggest that you change your LUNs from NR5 to NR10 as HP suggests NR5 for archive and read-only data.

Re: Reboot Single Node

CalvinZito — Thu, 20 Oct 2016 20:24:32 GMT

Agree with @oikjn about changing to NW10 if you have a "normal" environment. You will see a lot of latency using NW5 for writes. However, if you do change to NR10, your total capacity will drop to 50% where currently it's 75% with a 4 node cluster.