Setting The Topology And The Loop Id (For Direct Host Connections) - Fujitsu ETERNUS LT20 S2 User Manual

Chapter 2 Setting the LT20 S2/LT40 S2/LT60 S2

2.2 Settings for Fibre Channel Connections

When connecting the LT20 S2/LT40 S2/LT60 S2 to a Brocade 16G FC switch (BR65xx/EBRDC8x) with a link

speed of 8Gbit/s, apply firmware version v7.3.0c or later to the FC switch and perform the following settings.

•

FC switch

(1)

For the port to which the LT20 S2/LT40 S2/LT60 S2 tape drive is connected, fix the speed to 8Gbit/s

with the "portcfgspeed" command.

(2)

For the port to which the LT20 S2/LT40 S2/LT60 S2 tape drive is connected, disable the DFE function

(*1) with the "portcfgnondfe" command.

*1:

•

LT20 S2/LT40 S2/LT60 S2

(3)

Fix the link speed of the LT20 S2/LT40 S2/LT60 S2 tape drive to 8Gbit/s.

These settings are not required if the LT20 S2/LT40 S2/LT60 S2 is connected to a Brocade 32G FC switch

(Brocade G610/G620/G630/X6-4/X6-8) because the LT20 S2/LT40 S2/LT60 S2 automatically recognizes the

link speed.

2.2.2

The following settings are required for direct host connections.

•

If the Fibre Channel card of the host is an LPe3xxxx series, a PY-FC33x/PY-FC35x series, an MC-0JFCFx/MC-

0JFCGx/MC-0JFCMx/MC-0JFCNx series, or an SP1X7FBC2F

Topology

•

If the Fibre Channel card of the host is a series other than the above

Topology

Addressing mode

Loop ID

*1:

The Addressing mode setting may not available for some models. In this case, select a fixed value since

"Automatic" cannot be selected for Loop ID.

Though "Automatic" can be selected for Topology, Addressing mode, and Loop ID, set the fixed values shown

above.

For more details about the settings, refer to "FUJITSU Storage ETERNUS LT20 S2 LTO Library Installing, Starting

Up and Maintaining" or "FUJITSU Storage ETERNUS LT40 S2/LT60 S2 LTO Library Installing, Starting Up and

Maintaining".

FUJITSU Storage ETERNUS LT20 S2/LT40 S2/LT60 S2 Tape Library User's Guide -Server Connection-

The Decision Feedback Equalization (DFE) function corrects signal noises on the receiver. Disable this

function because it may prevent the port connected to the LTO drive from correctly recognizing the sig-

nal.

Point to Point

Arbitrated Loop

Hard Addressed (*1)

Any value ("1" is recommended)

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