Sas Cables - IBM System Storage DS3500 Introduction And Implementation Manual

Draft Document for Review March 28, 2011 12:24 pm
Figure 4-6 The 7 segment numeric LED displaying the enclosure ID, in this example it is displaying "43"
Note: The 7 segment numeric LED display is also used for diagnostic purposes.
These enclosure ID values are important because the unique hardware address of each drive
in the storage subsystem is determined by the unique enclosure ID and the slot number of the
drive in that enclosure. If two enclosures are configured with the same enclosure ID, the disk
drives will have conflicting hardware addresses.

4.3 SAS cables

In this section we describe the SAS Cables that you can use to connect the DS3500 to hosts
and to EXP3500 expansion enclosures.
Each DS3500 RAID controller has up to four x4 multilane SAS host ports and a single x4
multilane SAS port for drive channel connections. IBM provides SAS cables in both 1 metre
and 3 metre cable lengths for connecting to EXP3500 enclosures and for SAS connections to
hosts. These SAS cables are also used to connect EXP3500 enclosures together. Figure 4-7
shows a typical SAS cable with mini-SAS 4x multilane SAS connectors on both ends of the
cable.
Figure 4-7 SAS cable
Chapter 4. IBM System Storage DS3500 and EXP3500 Cabling
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