How can I grow a 3Ware 9650SE RAID1 under ESXi 5.0?

Solution 1:

There appears to be a separate version of tw_cli for ESXi. The article linked is now somewhat oldish, but contacting LSI technical support should yield the correct download in any case. Also, if you can afford downtime, you could use a Linux live CD to do the array expansion. SysRescueCD even comes with tw_cli out of the box, so you would not need to download or install anything.

After you've successfully expanded your array, you still would need to expand the datastore in ESXi. The process is quite self-explanatory if you use the vSphere GUI client.

Note that all LSI KB articles have moved from kb.lsi.com to mycusthelp. I think the original KB numbers have been lost in the conversion, so you would need to use the keyword search to retrieve the information you need from the KB.

The partition table you've attached does not show a partition spanning 2 TB. The misconception here seems to be that you are taking the numbers provided for Kilobytes while they in fact are 512-byte sectors, so the last vmfs datastore partition spans to sector 1953103838, which is just a bit under the 1 TB size of your array.