Hello Wee,

Friday, April 20, 2007, 4:50:08 AM, you wrote:

WYT> Hi Tim,

WYT> I  run a setup of SAM-FS for our main file server and we loved the
WYT> backup/restore parts that you described.

WYT> The main concerns I have with SAM fronting the entire conversation is
WYT> data integrity. Unlike ZFS, SAMFS does not do end to end checksumming.

WYT> We have considered the setup you proposed (samfs copy1 -> ZFS) but you
WYT> will run into problem with fs-cache.  Being only a copy, ZFS probably
WYT> do not need much caching but will win the battle for memory due to the
WYT> way its cache is managed.  Unless there is a visible memory shortfall,
WYT> ZFS will starve (sorry guys) samfs from memory it could use as cache.
WYT> Also, ZFS's data integrity feature is limited by the use of 2nd hand
WYT> data.

You can limit how much memory zfs can use for its caching.

-- 
Best regards,
 Robert                            mailto:[EMAIL PROTECTED]
                                       http://milek.blogspot.com

_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Reply via email to