Tobias Exner wrote:
Hi list,
I'm thinking about to put the MS Exchange storage on a zfs volume via
iscsi...
I guess that's not a problem, but the more interesting question is if
it's possible to get more performance using the l2arc function with a
FusionIO Flash card...
In general, yes. But remember that l2arc stores data for reads
only. It begins to fill when you run out of main memory. If you
are currently running well within the bounds of main memory, then
an l2arc won't help. I would presume that more main memory would
be more cost effective than a Fusion IO card on a cost/bit basis, if
the machine has room for growth.
Use arcstat to view arc usage.
I understood the idea of the l2arc cache but I'm unsure how it works
when sharing the pool over iscsi. Is the l2arc based on files or blocks?
blocks.
-- richard
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
