Tuesday 19 March 2013

Replacing a failed disk in ZFS

As you can see below running “zpool status” shows me that disk c6d0 has faulted (before you replace the disk you can run "format" to check the serial numbers to make sure you pull out the right disk!!!!)

I replaced the faulty disk, then ran “zpool replace zfs c6d0” another check of “zpool status” and you can see the drive is rebuilding (resilvering as it’s called in the ZFS world).

Run a “zpool status” in 30 mins or so, this will give you an accurate finish time, in my case I can see its going to take about 6 and a half hours.

VMware vCenter Heartbeat Licensing

VMware Heartbeat Licensing?  It's a tricky question and one I have the answer to.  1 single license (yes that's just ONE) will entitle you to run Heartbeat on a vCenter Server AND a separate MS SQL server.  The caveat being that you are only supposed to protect VMware related databases (this could mean running VMware databases on a separate instance).  The other fact to note that if you have this type of setup, you will have 4 instances of the Heartbeat software running, 1 on the primary vCenter server, 1 on the secondary vCenter server, 1 on the primary Database server and 1 on the secondary Database server.

Stuff will be coming

I'm just setting myself up.  This is my first attempt at "blogging" (and I call myself a techo!).  Interesting stuff to follow!