Robert Milkowski wrote: > Hello Richard, > > Wednesday, October 15, 2008, 6:39:49 PM, you wrote: > > RE> Archie Cowan wrote: > >>> I just stumbled upon this thread somehow and thought I'd share my zfs over >>> iscsi experience. >>> >>> We recently abandoned a similar configuration with several pairs of x4500s >>> exporting zvols as iscsi targets and mirroring them for "high availability" >>> with T5220s. >>> >>> > > RE> In general, such tasks would be better served by T5220 (or the new T5440 > :-) > RE> and J4500s. This would change the data paths from: > RE> client --<net>-- T5220 --<net>-- X4500 --<SATA>-- disks > RE> to > RE> client --<net>-- T5440 --<SAS>-- disks > > RE> With the J4500 you get the same storage density as the X4500, but > RE> with SAS access (some would call this direct access). You will have > RE> much better bandwidth and lower latency between the T5440 (server) > RE> and disks while still having the ability to multi-head the disks. The > RE> J4500 is a relatively new system, so this option may not have been > RE> available at the time Archie was building his system. > > Has MPxIO for J4500 (SAS) been backported to S10 yet? >
It is not a J4500 feature, it will depend on the HBA and driver. mpt(7d) has it in Solaris 10 5/08 (update 5) and patches are available for update 4. When in doubt, check the man page for your driver. -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
