Monitoring and maintaining Thin Image

Parent Topic

• Thin Image

  The high-speed, nondisruptive snapshot technology of Thin Image rapidly creates up to 1,024 point in-time copies of mission-critical information within the storage system or virtualized storage pool without impacting host service or performance levels. Because snapshots store only the changed data, the volume of storage capacity required for each snapshot copy is substantially smaller than the source volume, providing significant savings over full-volume cloning methods. Cascaded snapshot configuration and cloning enables creation of snapshot trees and full-copy clones from snapshots using Thin Image.

Child Topics

• Monitoring pair information
• Monitoring consistency groups
• Viewing Thin Image pair task history

  You can review task history, including which tasks you have performed on a pair, in the History window.

• Viewing licensed capacities

  You can view the licensed capacities using the Replication window.

• Viewing the number of cache management devices

  You can view the current number of cache management devices that are available and in use and the maximum amount of cache management devices you can create in the storage system in the View Management Resource Usage window.

• Managing pools

  Use Thin Image to manage pools, such as monitoring information about a selected pool (for example, the LDEV ID and Used Pool Capacity), viewing used pool capacity by pool or by the Thin Image pair's root volume, viewing the progress of rebalancing the pool usage rates among parity groups, increasing pool volume by adding pool-VOLs to a pool, decreasing the pool volume, and monitoring the pool usage rate.

• Managing virtual volumes
• Viewing snapshot data capacity

  You can use the raidcom command to view the snapshot data capacity for each P-VOL.

• Maintaining pairs during storage system maintenance

  You can maintain pairs when you switch off the storage system power and when you replace the microcode.