Avago Technologies 3ware SAS 9750-4i User Manual
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Chapter 2. CLI Syntax Reference
98
3ware SATA+SAS RAID Controller Card CLI Guide, Version 10.0
The following table illustrates valid migration paths:
disk=p:-p.. consists of a list of ports or VPorts (disks) to be used in addition to
the source disks in the construction of the destination unit. One or more ports
can be specified. Multiple ports can be specified using a colon (:) or a dash (-)
as port index separators. A dash indicates a range and can be mixed with
colons. For example disk=0:1:2-5:9:12 indicates port or VPort 0, 1, 2 through
5 (inclusive), 9 and 12.
group=3|4|5|6|7|8|9|10|11|12|13|14|15|16 indicates the number of disks per
group for a RAID 50 type. (This attribute can only be used when
type=raid50.) Recall that a RAID 50 is a multi-tier array. At the bottom-most
layer, N number of disks per group are used to form the RAID 5 layer. These
RAID 5 arrays are then integrated into a RAID 0. This attribute allows you to
specify the number of disks in the RAID 5 level. Valid values are 3 through
12. For example group=3 indicates 3 disks of RAID 5 at the bottom layer of
RAID 50.
Note:
You can have a maximum of 4 subunits in a RAID 50 unit
Note that a sufficient number of disks are required for a given pattern or disk
group. For example, given 6 disks, specifying 3 will create two RAID 5
arrays. With 12 disks, specifying 3 will create four RAID 5 arrays under the
RAID 0 level. With only 6 disks a grouping of 6 is not allowed, as you would
basically be creating a RAID 5.
The default RAID 50 grouping varies, based on number of disks. For 6 and 9
disks, default grouping is 3. For 8 disks, the default grouping is 4. For 10
Table 13: Valid Migration Paths
Destination
Source
R0
R1
R5 R6
R10
R50
Single
Spare
R0
Yes
No
Yes
Yes
Yes
Yes
No
No
R1
Yes
No
Yes
Yes
Yes
Yes
Yes
No
R5
Yes
No
Yes
Yes
Yes
Yes
No
No
R6
Yes
No
Yes
Yes
Yes
Yes
No
No
R10
Yes
No
Yes
Yes
Yes
Yes
No
No
R50
Yes
No
Yes
Yes
Yes
Yes
No
No
Single
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Spare
No
No
No
No
No
No
No
No