The Data Immutability feature in HPE StoreOnce Catalyst Storage (HPE StoreOnce software version 4.3.2 or higher) prevents the backup applications from modifying or deleting StoreOnce Catalyst items during a specific (immutable) period. Additionally, it protects data from accidental deletion and modification through various security attacks like ransomware.
Once an item is marked as immutable, its data cannot be modified or immutable time cannot be reduced.
Maximum ISV Controlled Data Immutability Retention
This setting on the StoreOnce console enables you to control data immutability on a per item basis. The retention setting on Commvault storage policy should be less than the Maximum ISV Controlled Data Immutability Retention set on the StoreOnce console. Else, the following error occurs.
Error Code: [62:3200]
Description: Error occurred in Disk Media, Path [demoworm\U3QYQM_09.30.2022_14.23\CV_MAGNETIC\V_1042] [Maximum ISV controlled data immutability retention configured is lower than the copy retention. Failed to set retention lock on the object. Please review and configure data immutability retention and copy retention correctly.]. For more help, please call your vendor's support hotline.
HP StoreOnce items will have immutable tags which displays the date on which the WORM storage lock expires. For example, Immutable 1646762500.
For information on enabling the WORM storage lock, see Configuring WORM Storage Mode on Disk Libraries.