On Jan 12, 2010, at 2:53 AM, Brad wrote: > Has anyone worked with a x4500/x4540 and know if the internal raid > controllers have a bbu? I'm concern that we won't be able to turn off the > write-cache on the internal hds and SSDs to prevent data corruption in case > of a power failure.
Yes, write cache is enabled by default, depending on the pool configuration. This is true for all disks that support write caches. The key to make this work is whether the device honors the cache flush command. The disks qualified for X4500/X4540 will honor the cache flush command. -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
