User manual
SATARAID5 User’s Manual Copyright © 2004 Silicon Image Inc.
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The fields are defined as follows:
RAID Group Label: Provides an identifiable name for the RAID group. This field can be any ASCII string to help the
user identify this volume.
RAID Group: Select a Group ID from the available ID list. The maximum number of RAID Groups per controller
is 8 so Group ID can be any number between 0 and 7 inclusive.
Configuration: The configuration indicates which RAID level is to be used to configure these members. The
options are:
Contiguous (for virtual disk or JBOD)
Concatenated (for multiple concatenated segments)
Striped (for RAID 0)
Mirrored (for RAID 1)
Mirrored Striped (for RAID 10)
Parity RAID (for RAID 5)
Capacity: This defines the total usable capacity of the RAID Group. Either select an entry from the pull down
list or manually enter the volume size in Gigabytes. Selecting MAX will create the largest RAID set
possible with the drive(s) selected.
Chunk Size: Chunk size, also known as stripe size, is for advanced users who want to tune their box for the
greatest performance. In general, large stripe sizes are best for large files that are accessed
sequentially (e.g. media streaming files) whereas smaller sizes are better for randomly accessed
data like databases. This parameter is not used for Contiguous, Concatenated, Mirrored or JBOD
RAID levels.
Rebuild Priority: Rebuild priority indicates how quickly the controller should rebuild data on a disk following a
hardware failure. A value of 1 is the lowest priority and will take the longest to rebuild. A value of
10 is the highest priority and will rebuild the fastest but may require more CPU resources which
could have some impact on the computer’s performance. This parameter is not used for
Contiguous, Concatenated, Striped or JBOD RAID levels.
Devices: Select RAID member devices from the available device segment list. The minimum number of
disks is determined by the RAID level as shown in the following table.