Users guide

Intel® RAID Software User Guide 14
2.2.5 RAID IME
An IME volume can be configured with up to ten mirrored disks (one or two global hot
spares can also be added). Figure 5 shows the logical view and physical view of an
Integrated Mirroring Enhanced (IME) volume with three mirrored disks. Each mirrored
stripe is written to a disk and mirrored to an adjacent disk. This type of configuration is
also called RAID 1E.
Figure 5. Integrated Mirroring Enhanced with Three Disks
Table 5. RAID 1E Overview
2.2.6 RAID 10 - Combination of RAID 1 and RAID 0
RAID 10 is a combination of RAID 0 and RAID 1. RAID 10 consists of stripes across
mirrored drives. RAID 10 breaks up data into smaller blocks and then mirrors the blocks
of data to each RAID 1 RAID set. Each RAID 1 RAID set then duplicates its data to its
other drive. The size of each block is determined by the stripe size parameter, which is set
during the creation of the RAID set. RAID 10 supports up to eight spans.
Table 6 provides an overview of RAID 10.
Uses
Use RAID 1E for small databases or any other environment that
requires fault tolerance but small capacity.
Strong Points
Provides complete data redundancy. RAID 1E is ideal for any
appl
ication that requires fault tolerance and minimal capacity.
Weak Points
Requires twice as many disk drives. Performance is impaired during
drive rebuilds.
Drives
3 to 10