Virtualizing a Storwize V7000 with an IBM SVC
anthonyv 2000004B9K Comments (18) Visits (15839)
IBM have offered Enterprise Storage Virtualization since June 2003 with the IBM SAN Volume Controller (SVC). October 2010 saw IBM releasing the Storwize V7000, taking the SVC code and packaging it into a midrange disk product. So now you have four possible choices:
The great thing is that all four choices are valid and all four choices work just fine.
The short answer: YES!
We have a great many customers happily doing this, so I thought I would share some common questions I get around configuration. Firstly there is an InfoCenter page on this which you will find here. Secondly there is a debate about whether we should create individual volume/arrays on the Storwize V7000 or just create a single pool on the Storwize V7000 (which equates to striping on striping). More bench marking is being done to see if one method is truly better than the other, so until then I recommend the method described below. If you have already done stripe on stripe, don't go changing anything until I update this post.
How many ports should I use for Zoning?
The Storwize V7000 has 8 Fibre Channel ports, 4 from each node canister. You need to zone at least two ports from each node canister to your SVC cluster. This is no different to how you would zone a DS5100 or an EMC VNX.
How will the SVC detect the Storwize V7000?
On the SVC you will see two storage controllers, one for each node canister. This is quite normal. The reason for this is that each node canister reports its own WWNN. This is not a problem and will not affect volume failover if one node canister goes offline.
In the example below the SVC has detected two new controllers. The confusing factor is that both report as 2145s, but they are a Storwize V7000. Rename them to reflect what they really are (something like Stor
How should I define the SVC on the Storwize V7000?
You need to create a new host on the Storwize V7000 and call it something like SVC_1. if the SVC WWPNs don't appear in the WWPN dropdown, you will need to manually add them as shown below:
You can get the SVC WWPNs from your existing zoning or by doing an svcinfo lsnodeagainst each SVC node or display them in the SVC GUI as shown below:
What size Storwize V7000 volumes should I create?
My recommendation is to do the following on the Storwize V7000
Hopefully all of this makes sense. Questions and comments very welcome.