NonStop NS-Series Planning Guide (H06.05+)

System Configuration Guidelines
HP Integrity NonStop NS-Series Planning Guide—529567-008
6-25
Configuration Recommendations for Fibre Channel
Devices
•
In systems with one IOAM enclosure:
°
With two FCSAs and two Fibre Channel disk modules, the primary FCSA
resides in module 2 of the IOAM enclosure with the backup FCSA residing in
module 3. (See the example configuration in Two FCSAs, Two FCDMs, One
IOAM Enclosure on page 6-27.)
°
With four FCSAs and four Fibre Channel disk modules, FCSA 1 and FCSA 2
reside in module 2 of the IOAM enclosure with FCSA 3 and FCSA 4 residing in
module 3. (See the example configuration in Four FCSAs, Four FCDMs, One
IOAM Enclosure on page 6-28.)
•
In systems with two or more IOAM enclosures
°
With two FCSAs and two Fibre Channel disk modules, the primary FCSA
resides in IOAM enclosure 1, and the backup FCSA resides in IOAM enclosure
2. (See the example configuration in.)
°
With four FCSAs and four Fibre Channel disk modules, FCSA 1 and FCSA 2
reside in IOAM enclosure 1, and FCSA 3 and FCSA 4 reside in IOAM
enclosure 2. (See the example configuration in Four FCSAs, Four FCDMs,
Two IOAM Enclosures on page 6-30.)
•
Daisy-chain configurations follow the same configuration restrictions and rules that
apply to configurations that are not daisy-chained. (See Daisy-Chain
Configurations on page 6-31.)
•
Fibre Channel disk modules containing mirrored volumes must be installed in
separate chains.
•
Daisy-chained configurations require that all Fibre Channel disk modules reside in
the same cabinet and be physically grouped together.
•
Daisy-chain configurations require an ID expander harness with terminators for
proper Fibre Channel disk module and disk drive identification.
•
After you connect all Fibre Channel disk modules in configurations of four FCSAs
and four Fibre Channel disk modules, yet three Fibre Channel disk modules
remain not connected, connect them to the four FCSAs. (See the example
configuration in Four FCSAs, Three FCDMs, One IOAM Enclosure
on page 6-33.)