Hi, Just as an FYI I've got something which pretty much does the job I want. I've only got it working on a small scale pilot but the important thing is that it works. I've just used out-of-the-box iSCSI, no additional hardware, no specialist switches and at this stage I'm still on entry-level servers. The structure is thus: TargetA on one site, TargetB on another, Initiator1 (can be on either site). I created identical targets on the two target servers, ran the device discovery on Initiator1 and picked up the iscsi LUNs. I then created a ZFS mirror pool using the devices from the two sites, added a file system, mounted it and away it went. Performance isn't spectacular (30MB/s write speeds seem typical) but at this stage I'm still only using the internal disks in a couple of HP DL360s. Next stage is to use SAN disks for the target devices. I still need to test the resilience more extensively. I think the whole thing blocks if one of the targets disappears but there may be workarounds for this. It's all still a work in progress. Still, its a start. Cheers Joe _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagersReceived on Wed Jun 3 10:29:19 2009
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