David Edmondson wrote: >> One option I'm still holding on to is to also use the ZFS system as a >> Xen-server - that is OpenSolaris would be running in Dom0... Given that >> the Xen hypervisor has a pretty small cpu/memory footprint, do you think >> it could share 2-cores + 4Gb with ZFS or should I allocate 3 cores of >> Dom0 and bump the memory up 512MB? > > A dom0 with 4G and 2 cores should be plenty to run ZFS and the support > necessary for a reasonable (<16) paravirtualised domains. If the guest > domains end up using HVM then the dom0 load is higher, but we haven't > done the work to quantify this properly yet.
A tasty insight - a million thanks! I think if I get 2 quad-cores and 16Gb mem, I'd be able to stomach the overhead of 25%cpu and 25%mem going to the host - as the cost differential of have a dedicated SAN with another totally-redundant Xen box would be more expensive Cheers! Kent _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
