DataDirect Networks EF2800, User Manual

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DataDirect Networks EF2800 FC RAID Storage System User Guide (V 1.0)
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
If a Reconstruct does not start automatically, it means that no valid
spares are available. To start a Reconstruct, replace the failed drive,
and add the new drive as a dedicated spare (see Section
5.4.2.1 on
page 84 ) or as a global spare (see Section 5.4.3.1 on page 85 ). Remember
that any global spares added might be used by any critical array, not
necessarily the array you want.
You can also use the Dynamic Spares function to start a reconstruct
when you replace a failed drive without having to add the drive as a
spare. For more information, see Section
5.4.1 on page 83 .
5.2.4 Expanding Array Capacity
You can expand array capacity without stopping I/O activity, so you can
continue using the array while the expansion process runs. You can
only expand one array at a time.
Expanding an array adds free space at the end of the array. You can
then can add a new partition or expand an existing partition into the
free space. For more information about partitions, see Section
5.3.1 on
page 78 .
Notes :
• Expanding an array here does not change the size of the host
operating system partitions that reside on the array, because the
RAID controller is working at the block level not the file system
level of the operating system. To use the new space, you must
create a new operating system partition using the newly added
space or use a third-party application specific to the operating
system to change the operating system partition size.
• How you create a new operating system partition or resize an
existing one depends upon the operating system. Most operating
systems cannot resize an existing partition. Refer to your operating
system documentation.
The number of drives you can add to an array depends upon the RAID
level as shown in
Figure 51 . You also cannot exceed the maximum
number of drives for each RAID level.