Figure 2-3. Storagesets, Partitions, And Disk Drives - Compaq StorageWorks RAID Array 3000 Controller Shelf User Manual

2-4 RAID Array 3000 Controller Shelf Hardware User's Guide
From the storage shelf's perspective, the controller receives the I/O requests
from the host and directs them to the devices. Since the controller processes all
the I/O requests, it eliminates the host-based processing that is typically
associated with reading and writing data to multiple storage devices.
The controller does much more than simply manage I/O requests: it provides
the ability to combine several ordinary disk drives into a single, high-
performance storage unit called a storageset. Storagesets are implementations
of RAID technology, also known as a Redundant Array of Independent Disks.
Every storageset shares one important feature: whether it uses two disk drives
or 12, each storageset looks like a single storage unit to the host.
You create storage units by combining disk drives into storagesets such as
stripesets, RAIDsets, and mirrorsets, or by presenting them to the host as
single-disk units (see Figure 2– 3).
Stripeset

Figure 2-3. Storagesets, partitions, and disk drives

Mirrorset
Disk Drives
Partitioned
Storageset
Raidset
Striped
Mirrorset
Partitioned
Disk Drive
3000-24