Expanding storage space using DP-Vols

Storage Subsystem Administration Guide for Hitachi NAS Platform

Part Number

Eventually, the total size of the HDP pool volumes reaches the total size of the DP-Vols. If the NAS server storage pool (span) needs more space, you can add space to it.

You can add as many HDP pool volumes as you want; however, you typically only need to add a small amount of space.

Note: See the CLI man pages or the Command Line Reference for detailed information about commands.
  1. Add the new pool volumes to the original pool.
  2. If the new total capacity of the pool volumes exceeds that of the DP-vols, add more DP-vols to the same HDP pool.
    Note: Make the new DP-Vols the same size and number as you originally created. All stripesets must be the same.
  3. Wait for formatting to finish.
    Otherwise, the file systems may auto-expand onto the new storage and find it so slow that the entire span fails.
  4. If new DP-vols were created, use the span-expand command to expand the span on to the new DP-Vols.