ESXi Datastore Considerations

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Hi guys - I am looking at upgrading the storage on my home ESXi lab. I'm currently running around 30 VM's on a single 7200rpm SATA 3 drive and the performance is starting to become an issue (particularly during Veeam backups of the VM's to a USB drive)

The board has an onboard SATA 2 RAID controller which connects up to a SAS backplane.

I was thinking of the following two options.

Buy a refurbished IBM M1015 and flash with LSI firmware and setup a RAID 1 with an additional 7200RPM SATA 3 drive and use that as a datastore. Since I'm backing up nightly to Veeam, redundancy isn't a major concern.

Purchase two 480GB Samsung PM863 drives and hook them up to the existing onboard RAID controller. (SATA 2) - I'm looking at the Enterprise option here due to having quite a few write intensive VM's (SQL, Exchange 2013)

Obviously the latter option is a fair more expensive - but would this offer much better performance vs spindles?

Many thanks
 
Last edited:
Many thanks for the suggestions guys - Yeah, all my VM's are thin provisioned.

I ended up with a single 7200rpm drive due to my trusty two 750GB Samsung's failing on me last week (Lasted 6 years) - I just needed something to get things back up and running temporarily.

I think I'll just go with a couple of 850 Evo's - looks like they are pretty cheap now at 500GB.

RAID controller-wise, I'd prefer to grab myself a cheap M1015 just for future proofing over using the onboard SATA 2 ports.
 
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