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IBM Flex System V7000 Storage Node Introduction and Implementation Guide
The wizard shows all internal drives with a status of candidate available for configuration. If
there are internal drives with a status of unused, a window opens, offering to include them in
the RAID configuration.
Using the storage configuration wizard simplifies the initial disk drive setup and offers two
options:
Use the recommended configuration
Select a different configuration
Selecting Use the recommended configuration guides you through the wizard described in
“Using the recommended configuration” on page 323. Selecting Select a different
configuration uses the wizard described in “Selecting a different configuration” on page 328.
Before going through the storage configuration wizard, we first describe the IBM Flex System
V7000 Storage Node RAID configuration presets.
RAID configuration presets
RAID configuration presets are used to configure internal drives based on recommended
values for the RAID level and drive class. Each preset has a specific goal for the number of
drives per array, the number of spare drives to maintain redundancy, and whether the drives
in the array are balanced across enclosure chains, thus protecting the array from enclosure
failures. For details about enclosure chains, see Chapter 2, “Introduction to IBM Flex System
V7000 Storage Node” on page 37.
Table 8-1 describes the presets that are used for solid-state drives (SSDs) for IBM Flex
System V7000 Storage Node.
Table 8-1 SSD RAID presets
Preset
Purpose
RAID
level
Drives per
array goal
Spare
drive
goal
SSD RAID 5
Protects against a single drive failure.
Data and one stripe of parity are
striped across all array members.
5
8
1
SSD RAID 6
Protects against two drive failures.
Data and two stripes of parity are
striped across all array members.
6
12
1
SSD RAID 10
Protects against at least one drive
failure. All data is mirrored on two array
members.
10
8
1
SSD RAID 0
Provides no protection against drive
failures.
0
8
0
SSD Easy Tier
Mirrors data to protect against drive
failure. The mirrored pairs are spread
between storage pools to be used for
the Easy Tier function.
10
2
1
SSD RAID instances: In all SSD RAID instances, drives in the array are balanced across
enclosure chains if possible.
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