HP Direct-Connect External SAS Storage for HP BladeSystem Solutions Depoyment Guide

MDS600 dual domain, high-performance cabling
This example illustrates cabling for an optimal high-performance, high-availability configuration
when using dual-port SAS drives. In this configuration, note the following:
• An additional cable from each MDS600 I/O module to an adjacent port on the switch offers
additional performance: one cable provides a 4x connection; two cables provide a 8x
(high-performance) connection. For more information on switch ports, 4x, and 8x
(high-performance) cabling, see “HP 3Gb SAS BL Switch” (page 22).
IMPORTANT: Both cables from an MDS600 I/O module must connect to one of the following
pairs of switch ports: 1/2, 3/4, 5/6, or 7/8.
Devices and quantities
MDS600 storage enclosures: 1
MDS600 I/O modules: 4
BladeSystem c7000 enclosures: 1
3Gb SAS BL Switches: 2
Server blade types: half-height and full-height
Connection details
• Switch in interconnect bay 5:
◦ Port 1: to MDS600 drawer 2, primary
I/O module, port 1
◦ Port 2: to MDS600 drawer 2, primary
I/O module, port 2
◦ Port 5: to MDS600 drawer 1, primary
I/O module, port 1
◦ Port 6: to MDS600 drawer 1, primary
I/O module, port 2
• Switch in interconnect bay 6:
◦ Port 1: to MDS600 drawer 2,
secondary I/O module, port 1
◦ Port 2: to MDS600 drawer 2,
secondary I/O module, port 2
◦ Port 5: to MDS600 drawer 1,
secondary I/O module, port 1
◦ Port 6: to MDS600 drawer 1,
secondary I/O module, port 2
Notes
• As shown in this illustration, server bays
1–8 may access MDS600 drawer 2 and
server bays 9–16 may access MDS600
drawer 1. For more information, see “HP
3Gb SAS BL Switch port information”
(page 85).
98 Deployment examples