HP 2000sa HP Direct-Connect External SAS Storage for HP BladeSystem Solutions - Page 83
Device SAS port information, HP 3Gb SAS BL Switch port information
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11 Device SAS port information HP 3Gb SAS BL Switch port information As shown in the following illustration: • SAS ports: 8, from left to right on the front of the switch. Labeled 1-8. Use these SAS ports to connect external SAS storage enclosures and tape devices. When cabling external storage enclosures to the switch, note the following: • Storage enclosures connected to switch ports 1-4 are reserved for use by server bays 1-8 in the BladeSystem c-Class enclosure. • Storage enclosures connected to switch ports 5-8 are reserved for use by server bays 9-16 in the BladeSystem c-Class enclosure. • For optimal performance, connect two cables from the switch to each storage enclosure I/O module or controller. This additional cable offers additional performance: one cable provides a x4 connection; two cables provide a x8 (wide-port) connection. When creating and assigning zone groups to server bays, note the following: • Assign server bays 1-8 zone groups associated with storage enclosures connected to switch ports 1, 2, 3, or 4. • Assign server bays 9-16 zone groups associated with storage enclosures connected to switch ports 5, 6, 7, or 8. HP 3Gb SAS BL Switch port information 83