NEC S1400 NF1400-SR40E, Руководство пользователя

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2. Features of Disk Array Unit
The disk array unit has the following features.
NF1400-SR40E is a high-performance disk array unit designed for NEC Express5800 (Windows 2000
/Windows Server 2003 / Turbolinux 7 Server / RedHat Linux 7.2 / Miracle Linux Standard Edition 2.1
/ RedHat Enterprise Linux AS 2.1 / RedHat Enterprise Linux ES 2.1), NX7000/NX7700i (HP-UX),
and CX5000 (Solaris) systems.
* Ask your sales representative for non-NEC servers (hosts) which are supported and compatible
operating systems.
The storage capacity of the disk array unit can be easily expanded by installing an additional FC disk
drive (option) in the expansion slot of the disk array unit.
An additional FC disk enclosure (option) to enable the expansion of the storage capacity of the disk
array unit is provided for the disk array unit.
The disk array unit supports RAID types 1, 5, 6, 10 and 50. If a fault occurs in a single disk drive (2
disk drives for RAID type 6), the disk array unit can continue the operation without loss of data.
Any defected disk drive can be replaced with a new one without system shutdown. Further, the disk
array unit has the auto repair feature which automatically starts data recovery after the replacement of
the defected disk drive.
If a single disk drive is specified as the spare disk, the data in the defected disk drive can be
immediately recovered in the spare disk. The use of this hot spare feature as well as the auto repair
feature allows the data in the defected disk drive to be automatically recovered in the spare disk as
soon as a disk drive is defected. This improves the system reliability.
The disk array unit has the cache memory data hold function by using the battery backup unit. The
function allows comfortable high-speed data processing to be done under high reliability.
Further, owing to the redundant configuration of the controller, fan, power supply, and battery backup
unit as well as disk drive, high availability is achieved.
See Section 9.2 "Optional Components" for the product names and part numbers of options.
Above features of the disk array unit are effective only for the hardware failure
(e.g., the hard disk is physically damaged or inoperative). The software failure
(e.g., the data is lost or rewritten due to program excursion) is not covered by
these features. When the software failure would occur, the system could seriously
be damaged. To minimize the damage, be sure to back up the data periodically.