Adaptec MAN-FC2002-001 Manuel D’Utilisation

2Gb SANbloc Series RAID Controller Introduction

This chapter describes how to set up, configure and use the 

2Gb SANbloc Series RAID Controller. Some general infor-

mation about the RAID controller is also provided.

The 2Gb SANbloc RAID Controller is a high performance 

controller, providing two host fibre channel 

and two device 

fibre channel interfaces. It is an intelligent, caching 
controller that supports RAID levels 0, 1, 3, 5, 0+1, 
and JBOD. The controller enables multiple hosts to 
access an array of disk drives, which can be configured 
as one or more virtual storage devices (logical units).

The controller provides continuous access to data in the 

event of a disk drive failure. When configured in a dual-

active controller system, the RAID controller also provides 

continuous access to data in the event of a controller failure. 

This dual-active controller system is one in which two 

controllers share 

access to the same array of disk drives. 

In the event of a controller failure, controller opera-
tions are assumed by the surviving controller through 
a failover process. The failed controller can then be 
removed and replaced while the system is online. The 
new controller resumes processing array operations in 
a failback process. During failover and failback, write 
cache coherency is maintained with the disk drives.

Three circuit boards make up the RAID Controller:

•

Controller: The controller circuit board contains the main 
controller and peripheral functions, including processor, 
control-store memory, XOR engine and cache controller, and