According to NOW, the FAS3240 will run 7.3.6. So you will want to downgrade the two new heads to 7.3.6 first. And upgrade your FAS3020 to 7.3.6. After the head swap you will be able to upgrade to 8.0.x.
We've done a number of head swaps here, and for the most part they've been easy. Make sure you keep a copy of all the config of your old head around. Things like LUN serial numbers, nodenames change after and you may need to set them back to the original (unless you want to reconfig your clients).
When we went from a single head to a cluster (years back), we built the new cluster first (at the same level of OnTap as the single head). Then we shut down the old head, moved the disk shelves over and then reconfigured OnTap (ip addresses, CIFS shares, NFS exports, etc). We used a new root volume, at that time it seemed easier than figuring out how to do a head swap from a single head to a cluster.
----- Original Message ----- From: "Simon Ogilvie" simon.ogilvie@gmail.com To: toasters@teaparty.net Sent: Tuesday, January 17, 2012 7:27:23 AM Subject: Head swap
Hi all,
I have a query regarding a head-swap upgrade which I've never attempted before, so any help would be much appreciated!
We currently have a single-head FAS3020 running a small number of SATA and FC shelves. The head is EOL and so I've been able to persuade my bean counters to buy me a pair of FAS3240 heads to use as an HA pair. We're keeping all the disk shelves, so I "just" need to swap the heads over. From what I've read, it's best practice to upgrade the old head to the version of ONTAP that the new head will run, but we don't have that option as the 3020 won't run ONTAP 8 and the 3240's won't run ONTAP 7! This is our central storage system, using CIFS, NFS and LUNs over FC, so getting it wrong isn't really an option. Is this going to be achievable or should I call professional services in? I'd rather do this myself if possible, not least because PS are rather expensive... Can I just copy the latest ONTAP onto the existing vol0 and shut the head down, power up the new head and make the disks owned by the new head? I assume I'll also have to tell the FC switches about the new WWPNs for the LUNs to work. Will that work or will I end up with a very large, very expensive brick?
Thanks! Simon. _______________________________________________ Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters