HP BladeSystem Deployment Guide for Solutions with 6Gb SAS BL Switches and External SAS Storage Enclosures

The following standards are maintained in the sample configurations:
Dual domainSingle domainDevice / Component
Depending on the type of server blade
used, two or four switches are installed in
Depending on the type of server blade
used, one or two switches are installed in
SAS BL switches:
the c-Class enclosure, providing dual pathsthe c-Class enclosure, providing a single
between the server blades and thepath between the server blades and the
switches. When using full-height orswitches. When using full-height or
half-height server blades, two switches arehalf-height server blades, one switch is
required. required, installed in adjacent interconnect
bays, for example, in interconnect bays 5
and 6.
Two controllers are installed in MSA 2040
SAS or P2000 G3 SAS MSA controller
One controller is installed in MSA 2040
SAS or P2000 G3 SAS MSA controller
MSA 2040 SAS or P2000 G3
SAS MSA controller modules:
enclosures, providing an alternate pathenclosures, providing a single path
between the switches and the MSA 2040
SAS or P2000 G3 SAS MSA System.
between the switch and the MSA 2040
SAS or P2000 G3 SAS MSA System.
Two I/O modules are installed in each
MDS600 or D6000 storage enclosure
One I/O module is installed in each
MDS600 or D6000 storage enclosure
MDS600 or D6000 SAS I/O
modules:
drawer, providing alternate paths betweendrawer, providing a single path between
the switches and the dual-port SAS drivesthe switch and the drives in the MDS600
in each MDS600 or D6000 enclosure
drawer.
or D6000. Unlike dual-port SAS drives,
single-port SATA drives are always single
domain, regardless of the number of I/O
modules in the storage enclosure
drawer.SATA drives are not supported for
use in D6000 enclosures, but are
supported for some MDS600
configurations. Support restrictions exist.
For more information see “External SAS
device, controller, drive, and cabling
support matrices” (page 77)
Two I/O modules are installed in the
D2600/D2700 storage enclosure,
One I/O module is installed in the
D2600/D2700 storage enclosure,
D2600/D2700 SAS I/O
modules:
providing alternate paths between theproviding a single path between the
switches and the dual-port SAS disk drives
in the D2600/D2700 disk enclosure.
switch and the single-port SATA disk
drives in the D2600/D2700 disk
enclosure.
Two cables are connected between the
switch and the storage enclosure: one from
A single cable is connected between the
switch and the storage enclosure. If ports
Cabling:
the primary controller or I/O module andon the switch and the storage enclosure
one from the secondary controller or I/Oare available, connect an additional cable
module. If ports on the switch and thebetween the devices, for improved
performance. storage enclosure are available, connect
an additional cable between the devices,
for improved performance.
72 Deployment examples