Multi-Host Access Control: Lun Filtering - Compaq External RAID Controller & Subsystem Infortrend Operation Manual

8.5
Filtering
RAID-based mapping provides access control over a Storage Area
Network where:
Figure 8 - 1
RAID-based mapping provides the centralized management for
host-storage access. It is derived from the concept that storage can
be divided into manageable pieces by mapping storage units to
different Logical Unit Numbers (LUNs). The storage can then be
managed in the context of a LUN map. We then append filtering
mask(s) to the LUNs making specific storage unit accessible or
inaccessible to one or multiple host adapters (HBAs).
8-14
Multi-Host Access Control: LUN
1. Servers may share common storage;
File integrity becomes a problem and access contentions
2.
might occur;
File access must be coordinated among multiple servers.
3.
Storage Pool
Host A
Host B
Host C
SAN
Host D
Host E
RAID Storage
LUN0
LUN1
LUN2
LUN3
LUN4
LUN5
Storage Pool
Infortrend