HSG80 ACS Solution Software V8.6 for Windows NT and Windows 2000 Installation and Configuration Guide

Planning Storage 2–21
Figure 2–16. Striped mirrorset (example 2)
Plan the mirrorset members, and plan the stripeset that will contain them. Review the
recommendations in “Storageset Planning Considerations,” page 2–14, and “Mirrorset
Planning Considerations,” page 2–16.
Storageset Expansion Considerations
Storageset Expansion allows for the joining of two of the same kind of storage containers
by concatenating RAIDsets, Stripesets, or individual disks, thereby forming a larger
virtual disk which is presented as a single unit. The Compaq StorageWorks HSG80 Array
Controller ACS Version 8.6 CLI Reference Guide describes the CLI command:
ADD
CONCATSETS
which is used to perform concatenation.
CAUTION: The ADD CONCATSETS command should only be executed with host
operating systems that support dynamic volume expansion. If the operating system
cannot handle one of its disks increasing in size, use of this command could make
data inaccessible.
Virtual disk
Block 0
Block 1
Block 2
Block 3
Block 4
Block 5
etc.
Disk 1
Block 0
Block 3
Block 6
Disk2
Block 0
Block 3
Block 6
Disk 3
Block1
Block 4
Block 7
Disk 4
Block 1
Block 4
Block 7
Disk 5
Block 2
Block 5
Block 8
Disk 6
Block 2
Block 5
Block 8
Operating
system
view
Actual
device
mappings
Stripeset
CXO6462A
Virtual disk #1 Mirrorset Virtual disk #2 Mirrorset Virtual disk #3 Mirrorset
Controller
internal
mapping