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Fujitsu ETERNUS LT260 Kullanıcı Kılavuzu

Chapter 3 Connections

3.1 Host Connection

3.1.3

Fibre Channel Configuration Requirements

The Fibre channel tape drive can be connected directly to the server with a host bus adapter (HBA) or through

a storage area network (SAN).

The installation requires one Fibre Channel cable for each tape drive. The tape drives all utilize an LC-style

connector. Some drives will have two FC ports, but only one cable connection is needed per drive.

Supported speeds by drive generation are listed in the table below.

Table 3.1

Supported Fibre Channel speeds

LTO generation

LTO-5

LTO-6

LTO-7

LTO-8

3.1.4

SAS Configuration Requirements

Serial Attached SCSI (SAS) is a computer bus technology mainly used to transfer data to and from storage

devices, including disk drives and tape drives. SAS is designed to transfer data at up to 6 Gbit/s.

SAS uses serial connections, with a direct connection between the host server and each of the storage devices.

This eliminates the need to configure SCSI busses and assign SCSI IDs, as is required for parallel SCSI devices.

The host server must have a SAS host bus adapter with an external connector. The HBA uses multiple LUNs to

communicate with the library. Verify that your HBA supports multiple LUNs, as most RAID controllers do not.

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.

Supported speeds by drive generation are shown in the table below.

Table 3.2

Supported SAS speeds

LTO generation

LTO-5

LTO-6

LTO-7

LTO-8

•

High quality SAS cables rated at the transfer rate the SAS drives are required. Always verify that the SAS

cable you are using is rated for the data transfer speed of the interface of your components. SAS cables

described as "equalized" may not support 6 Gbit/s data rates and should not be used with LTO-5 or later

generation tape drives unless these cables are verified for 6 Gbit/s data rates.

•

The library has one or more mini-SAS connectors on each SAS tape drive. Mini-SAS connectors are keyed.

Do not force a SAS cable's mini-SAS connector into the tape drive as it might be keyed differently.

FUJITSU Storage ETERNUS LT260 Tape Library User's Guide -Site Planning-

Supported speeds

2 Gbit/s, 4 Gbit/s, 8 Gbit/s

Supported speeds

1.5 Gbit/s, 3 Gbit/s, 6 Gbit/s

P3AM-8782-06ENZ0