I’ve got a couple of questions regarding storage provisioning for our VMware environment.
Our datastores are currently presented from a pair of Dell-EMC Unity 450F all-flash arrays (50TB each), using mostly 3TB iSCSI LUNs. Average VM size is around 200GB, but there is a wide range VM sizes, from sub 10gb micro-Linux OSs, to a few 4+ TB VMs, which reside on single VM datastores (above the standard 3TB LUN size). We have around 340 VMs across 20 datastores, with an average of around 17 VMs per datastore, but this is a little skewered by some of the single-VM LUNs, with most datastores hosting 20+ VMs. From the Unity end, all LUNs are thin provisioned, with half of the LUNs enabled for data-reduction, and a half-hearted effort on our end to match VMs and workloads suitable for data reduction on appropriate LUNs, and vice versa. The VMware environment itself is all 6.5, with Enterprise Plus ESXi licencing.
My four questions are as follows:
Thanks in advance for any assistance with these queries!