B-3
SAN Solution Strategies (DuraStor 7320SS only)
Hubs Enabled
In Figures
and
, the controllers are configured in an active-
active dual-port mode with the internal hubs enabled. Two hosts
are connected via two independent loops using the enclosure’s
built-in hub bypass circuits. These circuits provide two internal
hubs, eliminating the need for the use of external FC hardware,
other than the cables.
Figure B-1 Two Hosts and Two Independent Loops
Host 2
FC HBA
FC HBA
Host 1
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
RAID Controller
SEP
T= Location of internal termination
T
T
Controller 1
SAF-TE Disk I/O Card
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
I/O Card
CH 0
CH 3
HUB
HUB
Host I/O
Connectors
Disk I/O
Connectors
DuraStor IUG - Online.book Page 3 Friday, July 19, 2002 3:06 PM