HP XP P9500 Storage - Manual (Page 166)

1. “Changing an access attribute to read-only or protect” (page 166)
2. “Changing an access attribute to read/write” (page 168)
3. “Enabling or disabling the expiration lock” (page 168)
4. “Disabling an S-VOL” (page 169)
5. “Reserving volumes” (page 169)
Assigning an access attribute to a volume
If you want to protect volumes against both read and write operations from hosts, change the
access attribute to protect. To protect volumes against write operations from hosts and allow read
operations, change the access attribute to read-only. In both ways, if you set the attribute to a
volume by Remote Web Console, S-VOL Disable is automatically set to prevent data in a volume
from being overwritten by replication software. If you use RAID Manager to set the attribute to a
volume, you can select whether the S-VOL Disable is set or not. If you set the Protect attribute to
the volume when the Thin Provisioning pool is full, the S-VOL Disable is not set to the volume.
After you change an access attribute to read-only or protect, the access attribute cannot be changed
to read/write for a certain period of time. You can specify the length of this period (called Retention
Term) when changing the access attribute to read-only or protect. The retention term can be extended
but cannot be shortened.
During the retention term
•
Read-only access can be changed to protect or protect can be changed to read-only.
•
If you need to change an access attribute to read/write, you must ask the maintenance
personnel to do so.
After the retention term is over
•
The access attribute can be changed to read/write.
•
The access attribute remains read-only or protect until changed back to read/write.
Changing an access attribute to read-only or protect
When changing an access attribute to read-only or protect, observe the following:
•
Do not assign an access attribute to a volume if any job is manipulating data on the volume.
If you assign an access attribute to such a volume, the job will possibly end abnormally.
•
The emulation type of the volume must be one of the following:
OPEN-3, OPEN-8, OPEN-9, OPEN-E, OPEN-K, OPEN-L, OPEN-V
•
The volume must not be one of the following:
Volumes that do not exist ◦
◦ Volumes that are configured as command devices
◦ Continuous Access Synchronous S-VOLs (*)
◦ Continuous Access Journal S-VOLs (*) or journal volumes
◦ Business Copy S-VOLs (*)
◦ Fast Snap S-VOLs (*)
◦ Snapshot S-VOL (*)
◦ Reserved volumes for Auto LUN
◦ Pool volume
166 Configuring access attributes