You can use fibre channel disks of various sizes with the same appliance, up to and including 18-GB, 36-GB, and 72-GB disks. However, unlike Network Appliance filers, the NetCache appliance does not support mixing fibre channel disks of different sizes in the same disk enclosure; they must be in separate enclosures.
The following table shows a sample configuration.
You can use SCSI disks of various sizes with the same appliance, up to and including 18-GB, 36-GB, and 72-GB disks. Additionally, the appliance does not support mixing SCSI disks of different sizes in the same SCSI backplane.
The following table shows a sample configuration.
The following scenarios describe various disk configurations that are available on the C1200 system.
Note
On the C1200 system, 36-GB and 72-GB size disks are available. The following table shows examples for 72-GB disks.
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Lowest cost, no redundancy. If a disk fails, you swap the disk (or in the case of the C1100 or C1105 models, the appliance itself). Caution |
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Redundancy. If a disk fails, the appliance will still run but it will run in degraded mode. For details, see Running in degraded mode. |
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RAID-4: 1 data + 1 parity + 1 hot spare = 72-GB raw capacity |
Highest reliability. If a disk fails, the appliance will still run, and the hot spare disk will be automatically promoted to the active file system, replacing the failed disk. If another disk fails after that process is complete, the appliance will enter degraded mode and behave like a two-disk system. |
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Higher capacity with redundancy. If a disk fails, the appliance will enter degraded mode and behave like a two-disk system. |
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Part No. 210-00317
File: disks6.htm
Last updated: 11/12/02 16:56:55