Configuring The Optional Raid Controller - NEC ES1200 User Manual

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Configuring the Optional RAID Controller

Number of RAID Level
Hard Drives Configured
1
2
3
Configuring Your System
One of the options available for your system is the
single channel DAC960 Redundant Array of Inexpensive
Devices (RAID) Controller board, which gives your
system the added security of fault tolerance.
If you order a system with the RAID controller, the
system is pre-configured at the factory. Use Table 4-8 to
determine how the RAID controller was configured at
the factory. If you want to change the RAID level or add
additional hard disks to the array, you must use the
DACCF utility.
If you are adding the RAID controller to an existing
system, the DACCF utility allows you to configure your
disk array before installing your network operating
system.
Table 4-8. RAID Configurations
Hard Drives
in Array
JBOD 1
1 2
5 3
Description
JBOD (Mylex RAID 7) JBOD is an acronym
for Just a Bunch Of Disks. Each drive can
operate independently as with a common host
bus adapter; or multiple drives may be
spanned and seen as a single very large drive.
No redundancy is provided.
Mirroring (RAID 1) Drives are paired and
mirrored. All data is 100% duplicated on an
equivalent drive (fully redundant).
Striping with Parity (RAID 5) Data is striped
across several physical drives. Parity
protection is used for data redundancy.