Quantum Scalar i6000 Podręcznik Użytkownika Pobierz pdf (Strona 47)

Chapter 2: Description

Host Attachment

Scalar i6000 Planning Guide 41

SCSI connection uses the Fibre Channel connection on the drive so a

dedicated port for library control is not needed.

Path failover licenses can be added to a library that has IBM or HP

nFC LTO-5 or higher drives. If control path failover is used, a

minimum of two path failover licenses are required. The control

path fails over to the second port on a drive and then to another

drive that is configured for control path failover. If a customer is

interested in minimizing the ports used on their FC switches, the

second port on the drives do not need to be used. In this case, the

failover would go directly from the primary drive to the failover

drive.

For more information, see the Scalar i6000 User’s Guide.For more

information, see the

Scalar i6000 User’s Guide

• Storage Networking (SNW) (Fibre Channel I/O Blade Attached)

— The host connects to the library through a dedicated 4 Gb FC

port on an FC I/O blade. However, using I/O blades in the data path

prevents the use of EEBs and path failover licenses.

A second, dedicated 4 Gb FC port on the FC I/O blade can be used

for control path failover. Drives must be SNW tape drives and

attached to an FC I/O blade. For more information, see the

Scalar

i6000 User’s Guide

• Library MCB Port (

not available for versions i10.x or higher

) — The

MCB has one dedicated 1 Gb FC port that can be used for host

connectivity. This port can be used even if the nSNW or SNW

options are purchased.

Note: This port is not supported in version i10.x or higher. If

upgrading a library to i10.x, a newer generation drive or I/O

blade may need to be ordered to provide a supported

library control path.

Data Path The data paths are used to send commands and data to tape drives. The

Scalar i6000 offers three different data path options:

• Native Fibre Channel (nFC) (Direct Attach) — Drives use a single

FC port per LTO tape drive. The FC interfaces vary by LTO generation:

•LTO-6 uses 8 Gb

•LTO-5 uses 8 Gb

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Quantum Scalar i6000 Podręcznik Użytkownika Strona 47