> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Stephan Budach > > Now, I am wondering if using a mirror of such 15k SAS drives would be a > good-enough fit for a ZIL on a zpool that is mainly used for file services via > AFP and SMB.
For supporting AFP and SMB, most likely, you would be perfectly happy simply disabling the ZIL. You will get maximum performance... Even higher than the world's fastest SSD or DDRDrive or any other type of storage device for dedicated log. To determine if this is ok for you, be aware of the argument *against* disabling the ZIL: In the event of an ungraceful crash, with ZIL enabled, you lose up to 30 sec of async data, but you do not lose any sync data. In the event of an ungraceful crash, with ZIL disabled, you lose up to 30 sec of async and sync data. In neither case do you have data corruption, or a corrupt filesystem. The only question is about 30 seconds of sync data. You must protect this type of data, if you're running a database, an iscsi target for virtual hosts, and for some other types of data services... But if you're doing just AFP and SMB, it's pretty likely you don't need to worry about it. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
