This is correct based on our experience with ZFS. When using NFS v3, you have COMMIT's that come down the wire to the ZFS/NFS server which forces a sync or flush to disk. To get around this issue without compromizing data integrity you can effectively get some NVRAM by adding a battery-backed hardware RAID controller to the NFS server and turn on write-back caching for the controller. This speeds things up for using tar and small files.
There's a ER open to add NVRAM support to ZFS, but don't know the state of that. This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
