Optional Raid Controllers - NEC TM1200 User Manual

Optional RAID Controllers

Factory Installed Controllers
The RAID options available for your system is the Mylex AcceleRAID
(SecuRAID 110) Controller board, which gives your system the added security of fault
tolerance.
If you order a system with a RAID controller, the system is pre-configured at the
factory. Refer to the "RAID Configurations" table below to determine how the RAID
controller was configured at the factory. If you want to reconfigure disk arrays and
logical drives, you must run the AcceleRAID
want to change the RAID level, you must run the Mylex Disk Array Controller Utilities
(DACCF) software. Refer to the AcceleRAID
system for information on running the AcceleRAID
and the DACCF utility.
Some server systems have network operating systems preloaded at
the factory. If a network operating system is preloaded on your
server system, then use of the DACCF utility is not required.
However, if you do use the DACCF utility you may need to reload the
network operating system. Make sure that you have all the pertinent
software to perform the reload.
Number of RAID Level
Hard Drives Configured
1 JBOD
2 1
3 5
4 5
CAUTION
RAID Configurations
Hard Drives in Description
Array
1 JBOD (RAID 0) 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.
2 Mirroring (RAID 1) Drives are paired and mirrored. All data is
100% duplicated on an equivalent drive (fully redundant).
3 Striping with Parity (RAID 5) Data is striped across several
physical drives. Parity protection is used for data redundancy.
3 plus 1 hot Striping with Parity (RAID 5) Data is striped across three
spare drive physical drives. Parity protection is used for data redundancy.
This drive is used as the "Hot Spare."
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150 BIOS Configuration Utility; if you
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150 documentation included with your
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150 BIOS Configuration Utility
Configuring Your System 3-29
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