Volume Properties; Snapshot Properties; Viewing Information About All Hosts - HP P2000 G3 Reference Manual

• Critical: The snap pool is 99% 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.
The following policies are defined:
• Auto Expand: Automatically expand the snap pool by the indicated expansion-size value. This is the
default policy for the Error threshold.
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 automatically expand the snap pool by the snap pool's
expansion-size value. 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.
• Delete Oldest Snapshot: Delete the oldest snapshot.
• Delete Snapshots: Delete all snapshots. This is the default policy for the Critical threshold.
• Halt Writes: Halt writes to the snap pool.
• Notify Only: Generates an event to notify the administrator. This is the only policy for the Warning
threshold.
• No Change: Take no action.
NOTE: For details about setting snap-pool thresholds and policies, see the CLI reference guide.

Volume properties

When you select the Client Volumes component, a table shows each volume's name, serial number, size,
vdisk name, and vdisk serial number.

Snapshot properties

When you select the Resident Snapshots component, a table shows each volume's name, serial number,
and amounts of snap data, unique data, and shared data.
Snap data is the total amount of data associated with the specific snapshot (data copied from a source
volume to a snapshot and data written directly to a snapshot).
Unique data is the amount of data that has been written to the snapshot since the last snapshot was taken.
If the snapshot has not been written or is deleted, this value is zero bytes.
Shared data is the amount of data that is potentially shared with other snapshots and the associated
amount of space that will be freed if the snapshot is deleted. This represents the amount of data written
directly to the snapshot. It also includes data copied from the source volume to the storage area for the
oldest snapshot, since that snapshot does not share data with any other snapshot. For a snapshot that is
not the oldest, if the modified data is deleted or if it had never been written to, this value is zero bytes.

Viewing information about all hosts

In the Configuration View panel, right-click Hosts and select View > Overview. The Hosts table shows the
quantity of hosts configured in the system.
For each host, the Hosts Overview table shows the following details:
• Host ID. WWPN or IQN.
• Name. User-defined nickname for the host.
• Discovered. If the host was discovered and its entry was automatically created, Yes. If the host entry
was manually created, No.
• Mapped. If volumes are mapped to the host, Yes; otherwise, No.
• Host Type. FC or iSCSI.
98 Viewing system status