Hi,
Currently got a Hybrid vSAN with 25TB of used storage out of total capacity of 45TB (using default vSAN storage policy)
We have another 30TB stored on other storage (such as SAN and NFS) which we temporary (might be for a month or even more) need to storage migrate to vSAN. (This will be consuming 60TB on vSAN due to default vSAN storage policy)
For this reason we are looking at options and one of them is to replace the cluster to an ALL FLASH vSAN (Standard License) but need to understand how much total capacity I need.
Would I be correct in calculating as follows:
25TB + 60TB = 85TB usable storage needed. (Note these figures already include a few TB extra to account for growth)
Now I recall that there should be approx 30% free (Slack space) on vSAN storage to account for Host failures etc... so to find total capacity 85 * 100 / 70 = 121.5
Total vSAN datastore (RAW) Capacity needed: 121.5TB
Got a couple of large VM's using 6TB on SAN/NFS which I know they can be problematic to move to vSAN unless there is enough free space.
Do I need to adjust the calculations above or take into consideration other factors?
Thanks
