SAS connection information
The server must have a SAS host bus adapter with an external connector.
The autoloader uses two SCSI logical unit numbers (LUNs) and requires an HBA with multiple LUN support.
Most Hewlett Packard Enterprise SAS RAID controllers support tape devices; many other SAS RAID
controllers do not support tape devices. To verify the specifications of your HBA or find a list of compatible
HBAs, see the DAPR compatibility matrix: http://www.hpe.com/storage/DAPRcompatibility
CAUTION:
Do not connect the autoloader to a SAS RAID controller unless the DAPR compatibility matrix shows
that the controller is qualified with the autoloader. The server might not be able to boot when the
autoloader is connected to an unsupported SAS RAID controller.
CAUTION:
Reliable data transfer requires high-quality cables and connections.
• Always verify that the SAS cable is rated for the data transfer speed of the HBA and tape drive.
• Do not use adapters or converters between the HBA and the tape drive. SAS signal rates require
clean connections and a minimum number of connections between the HBA and the tape drive.
• SAS cables described as "equalized" might not support 6 Gb/s data rates. Do not use equalized
cables with LTO-5 or later generation tape drives unless these cables are verified for 6 Gb/s data
rates.
• For optimal performance, only use cables of the length specified as qualified for your products. Do
not use a SAS cable longer than 6 meters.
Cable requirements
Most SAS HBA ports have four SAS channels. A tape drive uses one channel, so each HBA port can support
up to four tape drives. You can use a cable with one connector on each end, but only one channel will be
used. To use the other channels, use a SAS fanout cable with a connector for each tape drive.
Connectors
The host end of the cable must have the same type of connector as the HBA external SAS port.
The tape drive has a mini-SAS connector. The connector is keyed in location 4, which is the standard location
for end devices. If you use a cable other than the one supplied with the product, verify that it is keyed in
location 4.
CAUTION:
Mini-SAS connectors are keyed. Do not force a SAS cable mini-SAS connector into the tape drive mini-
SAS port because it might be keyed differently.
SAS connection information 9
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