Canon VB-C300 Administrator's Manual page 282

Hard Disk
Configuration for Reducing Rebuilding Time
As described in the preceding section, it is important to shorten rebuilding time as far as possible. You can
reduce rebuilding time by configuring hard disks as follows:
For example, when you create two configurations including three 146GB hard disks and a hot- spare, instead
of creating one configuration (900GB) including three 300GB hard disks and a hot-spare, rebuilding requires
less time and risks are reduced.
Measures to be Taken When Rebuilding
To reduce the load on the PC during rebuilding and to shorten the rebuilding time, it is also recommended to
implement the following measures:
• Stop the Storage Server program before rebuilding.
• Temporarily reduce the recording frame rate during rebuilding.
Notes on Consistency Check of RAID Configuration Information
For stable operation of hard disks, you need to regularly perform consistency check of RAID configuration
information. This is especially effective for preventing data inconsistency when rebuilding is performed.
However, as with rebuilding, the consistency check of RAID configuration information imposes a burden on the
PC for a long period of time.
In a consistency check of RAID configuration information, measures such as configuring hard disks in the
same way as in rebuilding and reducing the load on the PC, are also important. See "Measures to be Taken
When Rebuilding".
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