LSI SAS6160 - Manual (Page 20)

Page 20 LSI Corporation | September 2010
LSISAS6160 SAS Switch User Guide Chapter 1: Overview | Connecting Devices to the SAS6160 Switch
The fifth example ( Figure 14 ) shows a large data storage network that includes two
SAS6160 switches and several expanders.
NOTE: Expanders are either zoning expanders or nonzoning expanders. When SAS
drives are attached to a zoning expander, each drive can be zoned individually and each
drive can be in its own zone group. When SAS drives are attached to a nonzoning
expander, they cannot be zoned individually. All the drives behind a nonzoning
expander must be in the same zone group as the expander.
Figure 14: Example 5, Large Data Storage Topology
A complex zoning configuration like this one could potentially include hundreds of SAS
initiators and targets. This flexible arrangement can easily be expanded without
extensive cabling changes. The SDM utility detects newly added SAS devices during
device discovery. You can use the SDM utility to modify and expand the storage
configuration.
NOTE: For zoning to function correctly, you must cable SAS6160 switches directly to
one another, or through SAS 2.0 zoning expanders.