Hi All,
Is there's a problem if I put the paging on a san external storage?
Thanks in advance,
itik
Yes - and no.
Paging spaces are used round-robin so they should be all of the same size, this is a thing to observe.
Second, during boot time AIX needs at least one accessible paging space as the system dump is copied there. SAN storage usually is not available during boot, though, so it is a matter of careful planning:
1) Leave at least one paging swapspace on the system disk. Add to that as many swapspaces on SAN devices as you need/want.
2) Make sure that all the swapspaces are of the same size, do NOT create a small swapspace on the system disk and a large ("because there is much more space") swap area on the SAN storage.
For example: If you need 50GB of swapspace and can afford only 5 GB on the system disk then add 9(!) swapspaces of 5GB each on the SAN device instead of one swapspace of 45GB.
I hope this helps.
bakunin