Hi All,
So, from what I have read SQL Server 2019 works best with 64K Allocation Unit Size (bytes per cluster) for the Data and Log Drives.
I am setting up a new Hyper-V server for a customer that will be hosting an SQL Server 2019 and ArcGIS Server under Hyper-V. The hardware provided has 2 x 240GB SSDs (Raid 1) for Hyper-V and 4 X 2TB SSDs (Raid 10) for the Hyper-V Clients. All SSDs are SAS.
I have set up the RAID 10 array as 1 big drive (approx 4TB) and setup the Raid 1 array with Hyper-V. I can now go into the Hyper-V and have a look at the Raid 10 and I can see it is using 4KB Allocation Unit Size (as per the default).
On the raid 10 will be VHDXs for the various drives on the 2 servers and 1 or two of them will be for the Data drive and Log Files. I know I can Create the VHDX under Hyper-V and then format it with 64KB allocation unit...