User manual

Chapter 7: Technology Background
179
At this point, you have the choice of:
• Format the unpartitioned/unformatted capacity as a second logical drive
• Delete the existing disk array and create a new one in the desired size
Delete and Recreate
If you require a logical drive larger than the maximum expansion size:
1. Backup the data from the current logical drive.
2. Delete the current logical drive.
See “Deleting a Logical Drive” on page 76 or page 129.
3. Create a new logical drive with the desired capacity.
See “Creating a Logical Drive” on page 74 or page 128.
4. Restore the data to the new logical drive.
Media Patrol
Media Patrol is a routine maintenance procedure that checks the magnetic media
on each physical drive. Media Patrol checks all physical drives assigned to disk
arrays and on spare drives. Media Patrol does not check unconfigured drives.
Unlike Synchronization and Redundancy Check, Media Patrol is concerned with
the condition of the media itself, not the data recorded on the media.
You can run Media Patrol from the subsystem. See “Running Media Patrol” on
page 108.
You can also run Media Patrol on a disk array. See “Running Media Patrol on a
Disk Array” on page 132.
Current LD Size
Maximum LD
Expansion Size
Sector Size
8 to 16 TB 16 TB 4096 bytes
4 to 8 TB 8 TB 2048 bytes
2 to 4 TB 4 TB 1024 bytes
up to 2 TB 2 TB 512 bytes