HP MSA 1040 HP MSA 1040 CLI Reference Guide (762782-001, March 2014) - Page 424

policy-threshold This basetype is used by show snap-pools. Table 49 policy-threshold properties Name Type Description threshold percent-usage policy size-to-expand size-to-expandnumeric string string string string uint32 Snap pool threshold level: • Warning: The snap pool is moderately full. When this threshold is reached, an event is generated to alert the administrator. The default is 75%. • Error: The snap pool is nearly full and unless corrective action is taken, snapshot data loss is probable. When this threshold is reached, an event is generated to alert the administrator and the associated snap-pool policy is triggered. The default is 90%. • Critical: The snap pool is 98% full and data loss is imminent. When this threshold is reached, an event is generated to alert the administrator and the associated snap-pool policy is triggered. Percent of snap pool space used that triggers the threshold's policy. Recovery policy to invoke when threshold value is reached: • autoexpand: Try to expand the snap pool by the size-to-expand value. If the snap pool's space usage reaches the percentage specified by its error threshold, the system will log Warning event 230 and will try to expand the snap pool by the snap pool's size-to-expand value (below). • If the snap pool is successfully expanded, the system will log Informational event 444. • If the snap pool cannot be expanded because there is not enough available space in its vdisk, the system will log Warning event 444 and will automatically delete the oldest snapshot that is not a current sync point. Each time the snap-pool's error threshold is reached and the system cannot auto-expand the vdisk, the oldest remaining snapshot that is not a current sync point will be deleted. This behavior occurs for each snap pool independently, based on its space usage. • deleteoldestsnapshot: Delete the oldest snapshot. • deletesnapshots: Delete all snapshots. • haltwrites: Halt writes to the snap pool. • notifyonly: Generates an event to notify the administrator. • size: For the autoexpand policy, the size (formatted to use the current base, precision, and units) by which to expand the snap pool when the threshold is reached. • N/A: The policy is not set to autoexpand. Unformatted size-to-expand value in 512-byte blocks. 424 XML API basetype properties