Protecting DP-VOLs

By using of the protecting function of DP-VOL, when problems occur in the pool or pool-VOLs, DP-VOLs using the pool can be protected from read and write requests, and change the access attribute of the DP-VOL to the Protect attribute. In the case of a pool created by pool-VOLs assigned from accelerated compression-enabled parity groups, when the capacity reserved for writing is depleted, the access attribute of the DP-VOL changes to the Protect attribute. The function to protect from reading and writing of DP-VOL when the pool usage reaches the full size is displayed in the window as Protect V-VOLs when I/O fails to Blocked Pool VOL. The function to protect from reading and writing of DP-VOL when the pool-VOL is blocked is displayed in the window as Protect V-VOLs when I/O fails to Blocked Pool VOL.

To use the protecting function of DP-VOL, following must be satisfied:

• Data Retention Utility must be installed.

• Pool types must be Dynamic Provisioning or Dynamic Tiering which is the multi tier pool.

When the access attribute of V-VOL was changed to Protect, if you change the access attribute other than Protect, see Configuring access attributes. The setting by the DP-VOL protection function has no connection to the access attribute status of DP-VOL. For example, even if you disabled the DP-VOL protection function to the pool while the Protect attribute was being enabled on DP-VOL, the Protect attribute would still be enabled on DP-VOL.

If you uninstall the Data Retention Utility, the V-VOL protection function setting remains in the pool. In this case, if the Data Retention Utility is installed again, settings made before the Data Retention Utility was uninstalled would be restored in the pool.