Yesterday Microsoft released an article regarding Windows Home Server (WHS) and Advanced Format (AF) drives which must be formatted and aligned for 4k sectors instead of the traditional 512 byte sectors.
The article states that the alignment tools that drive manufacturers provide are not always compatible with the WHS platform – and therefore Advanced Format drives are not supported:
You will experience performance degradation when using Advanced Format disk in your Home Server v1 for Server Backup, Storage Pool, or System Disk because the disks are formatted and aligned in a way Windows Home Server is not compatible with.
The article is not clear on the use of drives which can simply be jumpered before installation and then formatted by WHS. After my own experiences with AF drives in WHS I have already decided not to use them in WHS v1.
Microsoft advises users not to use AF drives in their WHS v1 systems. The upcoming WHS ‘Vail’ will support these drives.