EUROLOGIC SANbloc MAN-FC2000-RAID, Руководство по установке

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Chapter 1: Introduction
The FC2500 Series RAID Controller is a high performance
fibre channel host to fibre channel disk RAID controller,
providing one fibre host channel and two fibre disk channels
conforming to the Fibre Channel Arbitrated Loop (FC-AL)
standards. The logical protocol used for both host and disk
communications is 100MB/s Fibre Channel Protocol (FCP)
SCSI over fibre.
The controller provides FC_AL host performance and fault
tolerant RAID disk operations for Fibre Channel (FC) disk
environments. The controller is an intelligent, caching
controller that supports RAID levels 0, 1, 3, 5, 0+1, JBOD,
30 and 50. The controller allows multiple host to access the
array of disk drives, which can be configured as one or more
virtual devices (logical units).
The controller permits continuous access to the data in the
event of a disk drive failure. The controller also provides
continuous access to data in the event of a controller failure.
This capability comes with a dual active controller system,
using two FC2500 controllers that share access to the same
array of disk drives. In the event of a controller failure, the
surviving controller through a fail-over process assumes
controller operations. The failed controller can then be
removed and replaced while the system is still on-line. The
new controller resumes processing array operations in a fail-
back process. During fail-over and fail-back, write cache
coherency is maintained with the disk drives.
The FC2500 supports an optional battery back-up unit
(BBU) for maintaining memory content in case of an AC
power failure. The principle purpose of the BBU is to