Drive type
Cable type
2 Gb
4 Gb
8 Gb
All except LTO-5 HH OM3, OM4
0.5 - 500 m
0.5 - 380 m
0.5 - 150 m
* The LTO-5 Ultrium 3000 half-height drive is shown as
LTO-5 HH
.
SAS connection information
The server must have a SAS host bus adapter with an external connector.
Table 9: SAS drive interface speeds
LTO generation
Supported speeds
LTO-4
1.5 Gb, 3 Gb
LTO-5, LTO-6, LTO-7, LTO-8
1.5 Gb, 3 Gb, 6 Gb
The library 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 library to a SAS RAID controller unless the DAPR compatibility matrix shows that the
controller is qualified with the library. The server might not be able to boot when the library is connected
to an unsupported SAS RAID controller.
About SAS
SAS is a computer bus technology for transferring data to and from storage devices, including disk drives and
tape drives. SAS-1, which is used for LTO-4 tape drives, is designed to transfer data at 3 Gb/s. SAS-2, which
is used for LTO-5 and later generation tape drives, is designed to transfer data at 6 Gb/s.
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.
28
SAS connection information
