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SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

mars_seven
Occasional Advisor

SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

I have a P4500 4-node cluster being used as a datastore for VMware vSphere 4.1. The network RAID 10 cluster consists of 2 P4500 G1 and 2 P4500 G2 nodes. They're at SAN i/Q 9 and same as the CMC.  I know that I'll have to upgrade my current cluster to SAN i/Q 9.5. I'm planning on adding 2 more P4500 G2. Will the current P4500 G2's still have SAN i/Q 9.5 or will they be at new version 10? Will I be able to add SAN i/Q v 10 P4500 G2 nodes in my current cluster?

 

 

P.S. This thread has been moved from HP 3PAR StoreServ Storage to HP StoreVirtual Storage / LeftHand. -Hp Forum Moderator

15 REPLIES
Northwoods
Frequent Advisor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

The G2 nodes will upgrade to version 10 and the G1's are currently stuck at 9.5. I've heard from HP support that there can be issues with this mixed configuration but we are still working with them on it.

 


In generally they've said it should work in a mixed-mode but you won't get the advantages of 10.

oikjn
Honored Contributor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

do you need the space in one large cluster?  Might be better to exchange the two new nodes with the G1 nodes and upgrade that cluster to v10 and have a 2nd cluster with the G1 stuff.  You get the same space, but not if you are trying to do one huge LUN.  You should be able to keep both clusters in the same mgt group.

mars_seven
Occasional Advisor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

the nodes are in a large cluster w/ 2TB LUN's presented to vShpere 4.1 to make a large datastore w/ extents. had a discussion w/ vendor and their storage expert and they suggested i can add the v10 P4500 nodes but will have to downgrade the firmware to match current nodes. they also suggested we go migrate to new 3PAR hardware (not likely for now).

i'm still waiting for budget approval to get new P4500 nodes.

oikjn
Honored Contributor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

I'm not a vmware guy so I can't say, but if the LUNs are all 2TB, is there a limitation from vSphere that all luns in the datastore must come from the same iSCSI target?  If not, there should be no reason why you can't keep the new nodes in their own management group and at v10.  unless you have an extreemely compicated setup, creating a 2nd management group and running two isn't that big of a deal.  Switching to 3Par just sounds like an upsell to me, what did they say their resoning was for that?

Bob Firek
Regular Advisor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

Northwoods,

 

Do you know what HP said would be the issues with running a mixed configuration?  Or can you point me to any HP docs on this? Also do you happen to know why the G1 servers can't be upgraded to 10? Is it a hardware issue? I'm stuck in this "mixed-mode" and am wondering what new horrors await me.

 

Thanks for your time,

 

Bob

Emilo
Trusted Contributor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

You are "stuck" in the mixed enviroment.

Unless you seperate them in to 2 management groups.

I would not panic to much about compatibilty issues as most of the bugs are being worked out.

They did release 10.5 which did have a lot of fixes to the previous version.

This document has lots of good information it is old but it still has some value.

http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c03544514/c03544514.pdf

 

mars_seven
Occasional Advisor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

after several weeks waiting for budget approval and several weeks for new 2 nodes to be shipped, finally arrived last week. won't be setting this up until next 3-day weekend in May. missed my opportunity to add the nodes when last 3-day weekend last February had passed. The CDWG HP storage expert had suggested a solution was to downgrade the firmware from 10 to 9.5. Haven't unboxed the nodes but did take note that they come w/ firmware 10 DVD's. Going to see if i can download ISO of 9.5 firmware.

PS

while waiting for budget approval during February, had a motherboard replacement done on one of the G1 nodes (power outage issue). 2 years ago, the other G1 node had a motherboard replacement due to failing storage controller. Maybe i should have asked for 4 P4500 instead of 2.

(the CFO had once asked about using the cloud thingy for storage.)

oikjn
Honored Contributor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

maybe I missed it, but did you say that you couldn't split this into two different clusters?  Just put the four G2 together and the 2x G1's together.  That way you can get the benefits of v10 on that cluster.  That works as long as you don't need to present just a single huge LUN.  That is what I would do... I might even consider splitting the two into two different mgt. groups as an option simply to make the clusters completely independent of eachother so something like a software upgrade bug doesn't take down my entire SAN.

mars_seven
Occasional Advisor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

they're several LUN's but set up as 1 ESXi datastore w/ extents so i really can't split w/o major vm move to somewhere else.

mars_seven
Occasional Advisor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

finally got around to unboxing 2 new P4500 G2's and placing on server rack. i've got version 9.0 restore DVD from current P4500 G2. tried to downgrade the new ver 10.0.00.1896 P4500 G2 but now asking for Feature License key. now what?

oikjn
Honored Contributor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

not sure about the feature key issue, but why can't you do a node swap to change out the G1 nodes for the new G2 nodes and remove the G1's from the cluster/management group?  As long as they have the same capacity there should be no issue with that and is completely seamless to anything connecting to the LUNs.  That way you can upgrade the G2 nodes completely.  I'm not an esx guy so I can't say if that helps you at all or not, but then I don't see why you can't then take the G1 nodes and put them into another management group since you said you are presenting multiple LUNs to esx, why can't those new LUNs be on another cluster?  What might confuse you is the idea of a node swap which would allow you to seamlessly remove the G1 nodes while not changing anything on your existing LUNs.

David_Schwartzs
Honored Contributor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

See this link:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?prodSeriesId=3936136&objectID=c01852189

Looks like it explains how to generate the license key files you're requiring. Hope this helps.
Regards,
--
David Schwartzstein
IT Channel Sales Expert / Solutions Architect

Currently looking for my next opportunity - http://www.linkedin.com/in/pctechyoda

If my post solves your problem, please kindly take a moment to mark my post as a solution. Thank you.
mars_seven
Occasional Advisor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)


David_Schwartzs wrote:
See this link:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?prodSeriesId=3936136&objectID=c01852189

Looks like it explains how to generate the license key files you're requiring. Hope this helps.

oh, i see. use the info in the License Entitlement Certificate. thanks.

David_Schwartzs
Honored Contributor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

Please let us know if everything worked out. Good luck!
Regards,
--
David Schwartzstein
IT Channel Sales Expert / Solutions Architect

Currently looking for my next opportunity - http://www.linkedin.com/in/pctechyoda

If my post solves your problem, please kindly take a moment to mark my post as a solution. Thank you.
mars_seven
Occasional Advisor

Re: SAN i/q v10 node in a v9 cluster (mixed G1 and G2 nodes)

UPDATE:

so i was able to license the new nodes and then use the restore SAN i/Q 9 DVD from previous nodes to downgrade from 10 to 9. needed 2 reboots for the process. then i added them to management group.

this past 3 day memorial day weekend, i added the 2 new nodes to the cluster. 1st, i made sure the management group local bandwidth priority was set to max to increase data rebuild speed. the network raid 10 stripe rebuild took about 12 hours.

then, i was able to create 1.99 TB LUN's (taking note of the vmware limit of max 2TB - 512MB LUN). Through VCenter, the LUN's weren't presentable when trying to add extents to datastore. i had to connect vshphere client directly to ESXi host and was able to add the LUN's to extend the datastore.

So far, working fine w/ the new added storage.

 

RECAP:

cluster of:

2 P4500 G1 nodes @ SAN i/q 9

2 P4500 G2 nodes @ SAN i/q 9

 

purchased:

2 P4500 G2 nodes @ SAN i/q 10

 

downgraded recently purchased P4500 from SAN i/q 10 to 9

added 2 new nodes to cluster

 

yes, i'll have to eventually upgrade from SAN i/q 9 to 9.5, but that's a wait for another 3-day weekend.