> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Mark Creamer > > 1. Should I create individual iSCSI LUNs and present those to the VMware > ESXi host as iSCSI storage, and then create virtual disks from there on each > Solaris VM? > > - or - > > 2. Should I (assuming this is possible), let the Solaris VM mount the iSCSI > LUNs directly (that is, NOT show them as VMware storage but let the VM > connect to the iSCSI across the network.) ?
If you do #1 you'll have a layer of vmware in between your guest machine and the storage. This will add a little overhead and possibly reduce performance slightly. If you do #2 you won't have access to snapshot features in vmware. Personally I would recommend using #2 and rely on ZFS snapshots instead of vmware snapshots. But maybe you have a good reason for using vmware snapshots... I don't want to make assumptions. > Part of the issue is I have no idea if having a hardware RAID 5 or 6 disk set will > create a problem if I then create a bunch of virtual disks and then use ZFS to > create RAIDZ for the VM to use. Seems like that might be asking for trouble. Where is there any hardware raid5 or raid6 in this system? Whenever possible, you want to allow ZFS to manage the raid... configure the hardware to just pass-thru single disk jbod to the guest... Because when ZFS detects disk errors, if ZFS has the redundancy, it can correct them. But if there are disk problems on the hardware raid, the hardware raid will never know about it and it will never be correctable except by luck. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
