Unit Object Commands
www.3ware.com
65
The following table illustrates valid migration paths:
disk=p:-p..
consists of a list of ports (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 0, 1, 2 through 5 (inclusive), 9
and 12.
group=3|4|5|6
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, 4, 5 and 6. For example
group=3
indicates 3 disks
of RAID 5 at the bottom layer of RAID 50.
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
Table 11: Valid Migration Paths
Destination
Source
R0
R1
R5 R10
R50
Single
JBOD
Spare
R0
Yes
No
Yes
Yes
Yes
No
No
No
R1
Yes
No
Yes
Yes
Yes
Yes
No
No
R5
Yes
No
Yes
Yes
Yes
No
No
No
R10
Yes
No
Yes
Yes
Yes
No
No
No
R50
Yes
No
Yes
Yes
Yes
No
No
No
Single
Yes
Yes
Yes
Yes
Yes
No
No
No
JBOD
No
No
No
No
No
No
No
No
Spare
No
No
No
No
No
No
No
No
Table 12: Supported Stripe Sizes
Model
R0
R1
R5
R10
JBOD
Spare
R50
Single
9K
16
N/A
16
16
N/A
N/A
16
N/A
64
64
64
64
256
256
256
256
