AdvancedDisk disk pool properties
Table: AdvancedDisk disk pool properties describes the disk pool properties.
Table: AdvancedDisk disk pool properties
| Property | Description |
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The disk pool name. |
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The storage server or storage servers. All NetBackup media servers that have a mount on the storage are listed. They share the storage for read and write purposes. |
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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. |
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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 this option 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, if available. If not available, NetBackup queues jobs until a volume is available. Too many jobs that read and write data may degrade disk performance because of disk thrashing. (Disk thrashing is when the read and write heads move between the cylinders excessively as they seek the data for competing jobs.) Fewer streams may improve throughput, which may increase the number of jobs that complete in a specific time period. A starting point is to divide the of all of the storage units by the number of volumes in the disk pool. |
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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. |