Creating the free and reserved pools of volumes

The IBM® System Storage® Support for Microsoft® Volume Shadow Copy Service and Virtual Disk Service software maintains a free and a reserved pool of volumes. Because these objects do not exist on the SAN Volume Controller, the free and reserved pool of volumes are implemented as virtual host systems. You must define these two virtual host systems on the SAN Volume Controller.

1. Create a host for the free pool of VDisks.
   • You can use the default name VSS_FREE or specify a different name.
   • Associate the host with the worldwide port name (WWPN) 5000000000000000 (15 zeroes).
2. Create a virtual host for the reserved pool of volumes.
   • You can use the default name VSS_RESERVED or specify a different name.
   • Associate the host with the WWPN 5000000000000001 (14 zeroes).
3. Map the logical units (VDisks) to the free pool of volumes.
   Restriction: The VDisks cannot be mapped to any other hosts.
   • If you already have VDisks created for the free pool of volumes, you must assign the VDisks to the free pool.
4. Create VDisk-to-host mappings between the VDisks selected in step 3 and the VSS_FREE host to add the VDisks to the free pool. Alternatively, you can use the ibmvcfg add command to add VDisks to the free pool.
5. Verify that the VDisks have been mapped.