OpenStorage disk pool properties
The properties of an OpenStorage disk pool may vary depending on the purpose the disk pool. The following table describes the possible properties:
Table: OpenStorage disk pool properties
| Property | Description |
|---|---|
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The disk pool name. |
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The storage server name. For disk appliance storage, the storage server is the disk appliance host. |
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Replication source |
Indicates that the disk pool is a source for replication. |
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Replication target |
Indicates that the disk pool is a target for replication. |
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For disk appliance storage, the disk volumes that comprise the disk pool. |
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The total amount of space available in the disk pool. |
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The total raw, unformatted size of the storage in the disk pool. The storage host may or may not expose the raw size of the storage. |
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A comment that is associated with the disk pool. |
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The setting is a threshold that triggers the following actions:
The default is 98%. |
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The is a threshold at which NetBackup stops image cleanup. The setting cannot be greater than or equal to the setting. The default is 80%. |
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Select to limit the number of read and write streams (that is, jobs) for each volume in the disk pool. A job may read backup images or write backup images. By default, there is no limit. When the limit is reached, NetBackup chooses another volume for write operations, if available. If not available, NetBackup queues jobs until a volume is available. Too many streams may degrade performance because of disk thrashing. Disk thrashing is excessive swapping of data between RAM and a hard disk drive. Fewer streams can improve throughput, which may increase the number of jobs that complete in a specific time period. |
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Select or enter the number of read and write streams to allow per volume. Many factors affect the optimal number of streams. Factors include but are not limited to disk speed, CPU speed, and the amount of memory. |