Originally posted by: CSCCjmclaugh

Hi everyone. I am wondering has anyone tried disk heartbeating with iscsi based disks as a way to get you non-ip network for HA. I know some people say you don't need it for HA, but I have been told in training to insist you have it.

Also, what is the current performance of iSCSI? Does it perform well for you? Do the current drivers support multipathing? What are the pros and cons of going from Fibre Channel to iSCSI? Our SAN admin is planning a separate network just for iSCSI, so there will be no client traffic slowing things down. Fibre Channel isn't out of the question, but we're trying to also satisfy some DR issues and with iSCSI we can probably do it but with Fibre Channel it gets a little pricy.

Joel McLaughlin
Sysadmin
CSCC
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Originally posted by: bodily

I can't say I have, or know anyone that has, tried it with iSCSI. While I am very proficient with HACMP, I know little about iSCSI. The gist of diskhb though revolves around AIX LVM and enhanced concurrent vgs. I would expect if your iSCSI device shows up as a disk device and you manage it with LVM then it should just work.

I would agree with the mentality of non-ip/serial hb that while it is NOT required it is strongly recommended.

If you are able to do it, I think the experience would be good to share.
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