On Sat, Feb 09, 2008 at 03:38:19PM -0800, Nick wrote: > I have been tasked with putting together a storage solution for use in a > virtualization setup, serving NFS, CIFS, and iSCSI, over GigE. I've inherited > a few components to work with: > > x86 dual core server , 512MB LSI-8888ELP RAID card > 12 x 300GB 15Krpm SAS disks & array > 2GB Flash to IDE "disk"/adaptor. > > The system will be serving virtual hard disks to a range of vmware systems > connected by GigE, running enterprise workloads that are impossible to > predict at this point. > > Using the RAID cards capability for RAID6 sounds attractive? > Using the Flash RAM for the ZIL? > Using zfs for general storage management?
ZFS has built-in software single- and double-parity RAID-Z, and, indeed, ZFS is happier being presented with individual disks than aggregations behind a RAID controller. The Flash RAM could be interesting as a separate intent log device for the ZIL, but it depends on the write latency of the device. You should benchmark your system both with and without the ZIL device. Adam -- Adam Leventhal, Fishworks http://blogs.sun.com/ahl _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
