B-5
SAN Solution Strategies (DuraStor 7320SS only)
Hubs Disabled
Figures
show two controllers configured in an active-
active dual-port mode with the internal hubs disabled. Two hosts
are connected via two independent switches. Using external
switches supports higher bandwidth, since the host ports are not
required to share bandwidth on a loop.
Figure B-3 Two Hosts and Two Switches
Host 2
FC HBA
FC HBA
Host 1
Switch 1
Switch 2
FC HBA
FC HBA
See's LUN 1 &
LUN 2
See's LUN 1 &
LUN 2
See's LUN 1 &
LUN 2
See's LUN 1 &
LUN 2
LUN 1
LUN 1
Active
Active
Active
Active
LUN 2
LUN 2
Host I/O
Connectors
Disk I/O
Connectors
RAID Controller
SEP
T= Location of internal termination
T
T
Controller 1
SAF-TE Disk I/O
Disk
CH1
Drives 7 - 12
Drives 1 - 6
Disk
CH2
Disk
CH0
Disk
CH3
FC2
FC1
P1
P2
CH 1
CH 2
P3
P4
HOST I/O
RAID Controller
Controller 2
Disk
CH1
Disk
CH2
Disk
CH0
Disk
CH3
FC2
FC1
T
T
T
T
SEP
T
T
Disk I/O
CH 0
CH 3
DuraStor IUG - Online.book Page 5 Friday, July 19, 2002 3:06 PM