MSA 2040 SMU Reference Guide

Viewing information about the system 99
Snapshot properties
When you select Snapshots in the System Overview table, a table shows each snapshot’s name; serial number;
source volume; snap-pool name; amounts of snap data, unique data, and shared data; and vdisk name.
• 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.
If no snapshots exist, the table displays no data.
Schedule properties
When you select Schedules in the System Overview table, a table displays the following information for each
schedule:
• Schedule Name.
• Schedule Specification. The start day and time of the schedule.
• Status. Expired or Active.
• Next Time. The next time the task is scheduled to run.
When you select a schedule, two tables display: the Schedule Details table and the Task Details table.
The Schedule Details table displays specifics about the schedule:
• Schedule Name.
• Schedule Specification. The start day and time of the schedule.
• Status. Expired or active.
• Next Time. The next time the task is scheduled to run.
The Task Details table displays specifics about the task:
• Task Name.
• Task Type. Type of task assigned to run.
• Status. Outcome of the task.
• Task State. Specific information about task type.
When you select a task of type TakeSnapshot, a third table displays. The Retained Set table shows the name and
serial number of each snapshot that the task has created and that is being retained.
If no schedules exist, the table displays no data.
To modify or delete scheduled tasks to suspend (disable) and resume (re-enable) DSD, use the Advanced Settings
Disk panel; see "Scheduling drive spin down for all disks" (page 50).
Configuration limits
When you select Configuration Limits in the System Overview table, a table shows the Maximum Vdisks, Maximum
Volumes, Maximum LUNs, Maximum Disks, and Number of Host Ports that the system supports. For a summary of the
physical and logical limits of the storage system, see the system configuration limits topic in SMU help.
Licensed features
When you select Licensed Features in the System Overview table, a table shows the status of licensed features.