Hi,
You are forgetting something. The FAS6040 and FAS6080 use different type of NVRAM cards with different amount of memory (512 MB vs 2 GB).
Even if will work technically work, which I doubt, it would certainly be a totally unsupported configuration.
Pascal.
-----Original Message----- From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Jeff Cleverley Sent: Thursday, January 31, 2013 2:58 AM To: toasters@teaparty.net Subject: 6080 heads with 6040 NVRAM cards.
Greetings,
I'm thinking about doing something that is not supported and was wondering if anyone had done the same or has more detailed insight.
We have a very busy cluster (6040s 7.3.5.1P4). It looks like we are largely maxing out the heads for CPU. We are getting a pair of 6080s and really need to try and do the head swap live (takeover / giveback) if at all possible. The unsupported part I want to do is keep the 6040 NVRAM cards and put them in the 6080s as I swap them. The reason for this is I would not have to change the system ID ownership on all the drives.
I know changing the system ID is generally not a big deal by booting each head to maintenance mode and reassigning the old SID to the new SID. In our case it worries me. Last week we were going to move a project to the other head by reassigning the appropriate drives for a couple of aggregates. While trying to reassign these the SAS buses started panic'ing and crashed the controlling filer. The entire cluster was down. The ensuing mess took several hours to clean up.
If it crashed while trying to change ownership of a few drives, I'm afraid of what will happen when it tries to reassign all the old SID drives for the new NVRAM card. I was hoping if we could keep the cards, we could swap heads, not change SIDs, and minimize our chance of repeating the crash. I could do the disks one at a time, but I have 796 drives on this cluster and would rather not.
Is there a requirement for the hardware to have the bigger memory cards? Since there are more CPUs, I can see where maybe something needs it, I just don't know what. We will probably have a downtime in a couple of months where I can put the correct ones back in.
Thanks,
Jeff
-- Jeff Cleverley Unix Systems Administrator 4380 Ziegler Road Fort Collins, Colorado 80525 970-288-4611 _______________________________________________ Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters