Chapter 5: Concepts
Multiply the number of blocks by the sector size to find the capacity of a logical drive:
4,000,000,000 blocks x 512 bytes per sector = 2,048,000,000,000 bytes of data for a 2TB drive.
Note that you cannot change the size of the sectors nor can you increase the number of address blocks above 4 billiion.
As a result, there are range limits imposed upon logical drive expansion as shown in the table above. For example:
•You can expand a 2.5 TB logical drive up to 4 TB
•You can only expand a 1.9 TB logical drive up to 2 TB
See the table below.
Current LD Size | Maximum LD | Sector Size | ||
Expansion Size | ||||
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8 to 16 TB | 16 TB | 4096 bytes | ||
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4 | to 8 TB | 8 TB | 2048 bytes | |
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2 | to 4 TB | 4 TB | 1024 bytes | |
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0 to 2 TB | 2 TB | 512 bytes | ||
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You can direct WebPAM PRO or the CLU to expand a logical drive beyond the maximum expansion size. However, when expansion is finished, your logical drive will be the maximum size listed in the table.
If you require a logical drive larger than the maximum expansion size:
1.Backup the data from the current logical drive.
2.Delete the current logical drive.
3.Create a new logical drive with the desired capacity.
4.Restore the data to the new logical drive.
Caution
Before you begin logical drive Expansion or RAID Level Migration, always back up your important data.
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