DataDirect Networks EF2800, User Manual

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C r e a t i n g a n d M a n a g i n g A r r a y s & P a r t i t i o n s
DataDirect Networks EF2800 FC RAID Storage System User Guide (V 1.0)
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SAM assigns each partition a unique serial number and sequence
number. It assigns sequence numbers in the order the partitions are
created, so the first partition on an array is number 1, the second is 2,
and so on. You can create additional partitions in the remaining free
space or you can expand a partition with some limitations.
You can only expand a partition into contiguous, following, free space.
In
Figure 53 , you can expand partition 1 or you can create additional
partitions in the free space. ..
After you partition all of the free space, you can expand the size of a
partition only by deleting a partition that follows (has a higher number
than) the one you want to expand. In
Figure 54 , you can delete partition
3, then expand partition 2 to use some or all of partition 3’s space.
C
AUTION
: If you delete a partition, you also delete all data stored in the
partition. Be sure that you back up all data before deleting a partition.
When you expand an array, you add free space at the end of the array as
shown in
Figure 55 . For more information about expanding an array,
see Section 5.2.4 on page 76
After expanding an array, you can either add a partition or expand the
last partition to use the new free space. You can also delete one or more
partitions and expand a partition into the space.
Figure 53. Array after creating one partition
Partition 1
Free
Space
Figure 54. Array with five partitions
Partition 1 Partition 2 Partition 3 Partition 4 Partition 5
Figure 55. Array with five partitions after expanding the array
Partition 1 Partition 2 Partition 3 Partition 4 Partition 5 Free Space