On May 23, 2010, at 6:05 PM, Chris Dunbar - Earthside, LLC wrote: > Hello, > > I think I know the answer to this, but not being an iSCSI expert I am hoping > to be pleasantly surprised by your answers. I currently use ZFS plus NFS to > host a shared VMFS store for my VMware ESX cluster. It's easy to set up and > high availability works great since all the ESX hosts see the same storage > pool. However, NFS performance has been pretty poor and I am looking for > other options. I do not currently use any SSD drives in my pool and I > understand adding a couple as ZIL devices might improve performance. I am > also thinking about switching to iSCSI. Here is my confusion/question. Is it > possible to share the same ZFS file system with multiple ESX hosts via iSCSI?
Yes. > My belief is that an iSCSI connection is sort of like having a dedicated > physical drive and therefore does not lend itself to sharing between multiple > systems. No. That said, if a single iSCSI target is concurrently shared by two initiators, then the access needs to be controlled in some way, via a shared storage mechanism or reservations. -- richard -- Richard Elling rich...@nexenta.com +1-760-896-4422 ZFS and NexentaStor training, Rotterdam, July 13-15, 2010 http://nexenta-rotterdam.eventbrite.com/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
