i''ve external storage (2 x 1TB drives) attached via a Multilane SATA +
RAID card (driver:sata_sil24).
my goal is a file server in DomU, serving files from a RAID array of
the two drives.
my Dom0, fwiw, is OpenSuse 11.1.
3 types of file service will be provided:
- large, media files will be served to the LAN
- active data files will be served to other DomUs over a private bridge
- a backup server will write Dom0, DomU & LAN backups (files &
snapshots) to the file server
iiuc, i''ve four choices:
(1) passthru the SATA card to the Domu
use H/W RAID in the DomU to create/manage the array
(2) passthru the SATA card to the Domu
use S/W RAID in the DomU to create/manage the array
(3) use H/W RAID in the DomU to create/manage the array
assign storage to the DomU''s @ create
(4) use S/W RAID in the DomU to create/manage the array
assign storage to the DomU''s @ create
I''m _leaning'' to (2), because
(a) the DomU can be Solaris/ZFS
(b) S/W raid frees me from dependence on proprietary hardware RAID
implementations
but, I''ve yet to weigh any Xen-related performance issues for my
particular case.
Which scenario is recommended to avoid (over)taxing traffic
to/from/thru the hypervisor etc etc?
Thanks.
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