08-07-2018
Well being professional the first thing you need to do before you mess with anything is to backup the lot. UFS filesystems are dumped using fssnap to take a snapshot (i.e. freeze) a filesystem which outputs a special device name. You then use that special device name to ufsdump the whole filesystem to backup (tape, external drive, whatever). Without doing that first should anything go seriously wrong you are stuffed. Your data is the most important thing!!!
Now, if you are saying that all filesystems are on a SAN then you should be able to get the storage boys to offer the LUNs to your new box. The main thing is whether that new box will boot from the root filesystem without error since I'm assuming that it's not identical hardware so different drivers might need to be loaded. That might take a few tricks. Also, the actual device nodes (e.g. c0t0d0s0) might be different but there are ways to get around that. You will need to manually update files like /etc/vfstab, /etc/system, etc, once the LUN's are swung across to the new box. This way you don't necessarily need to restore anything if you can get away with it.
Alternatively, you get your storage team to allocate new similar capacity LUN's for each and every filesystem, you install Solaris from installation media, and then restore each filesystem from its ufsdump file. You will still need to tackle the issues surrounding different hardware and incorrect drivers being restored.
HOWEVER, provided you have done the ufsdump backups for each and every filesystem, if anything goes bang you can recover. Just be totally professional and backup everything before you mess with it.
Hope that helps.
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