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The following standards are maintained in the sample configurations:
Device / Component
SAS BL switches:
MSA 2040 SAS or P2000 G3
SAS MSA controller modules:
MDS600 or D6000 SAS I/O
modules:
D2600/D2700 SAS I/O
modules:
Cabling:
72
Deployment examples
Single domain
Depending on the type of server blade
used, one or two switches are installed in
the c-Class enclosure, providing a single
path between the server blades and the
switches. When using full-height or
half-height server blades, one switch is
required.
One controller is installed in MSA 2040
SAS or P2000 G3 SAS MSA controller
enclosures, providing a single path
between the switch and the MSA 2040
SAS or P2000 G3 SAS MSA System.
One I/O module is installed in each
MDS600 or D6000 storage enclosure
drawer, providing a single path between
the switch and the drives in the MDS600
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)
One I/O module is installed in the
D2600/D2700 storage enclosure,
providing a single path between the
switch and the single-port SATA disk
drives in the D2600/D2700 disk
enclosure.
A single cable is connected between the
switch and the storage enclosure. If ports
on the switch and the storage enclosure
are available, connect an additional cable
between the devices, for improved
performance.
Dual domain
Depending on the type of server blade
used, two or four switches are installed in
the c-Class enclosure, providing dual paths
between the server blades and the
switches. When using full-height or
half-height server blades, two switches are
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
enclosures, providing an alternate path
between the switches and the MSA 2040
SAS or P2000 G3 SAS MSA System.
Two I/O modules are installed in each
MDS600 or D6000 storage enclosure
drawer, providing alternate paths between
the switches and the dual-port SAS drives
in each MDS600 or D6000 enclosure
drawer.
Two I/O modules are installed in the
D2600/D2700 storage enclosure,
providing alternate paths between the
switches and the dual-port SAS disk drives
in the D2600/D2700 disk enclosure.
Two cables are connected between the
switch and the storage enclosure: one from
the primary controller or I/O module and
one from the secondary controller or I/O
module. If ports on the switch and the
storage enclosure are available, connect
an additional cable between the devices,
for improved performance.
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Troubleshooting
