Disk configuration considerations

Each node in the vSAN cluster contributes one or more disk groups to the cluster. A disk group contains one cache disk and one or more capacity disks. Best practice is to include a minimum of two capacity disks per disk group for performance and data availability.

Note: All ThinkAgile VX nodes in the cluster must use the same disk configuration.
Form factor Product Maximum disk configuration Maximum number of cache disks Maximum number of capacity disks
Front Mid Rear
1U VX2320 4 x 3.5''     1 3
VX3320 10 x 2.5''     2 8
VX7320-N 10 x NVMe     2 8
2U VX3520-G 16 x 2.5''     4 12
VX5520 12 x 3.5"   2 x 3.5" 2 12
VX7520 24 x 2.5''     4 20