This feature on the Model D24 Frame indicates that 3592 Model J1A
Tape Drives will be connected to 3592 Model J70 Controller through
an external customer-supplied fibre channel switch or directly connect to
the controller.

The customer is responsible for providing the cables from the 3592
Model J70 installed in a Model D24 Frame to a customer-supplied fibre
channel switch. (Cables from the switch or controller
to the 3592 Model J1A Tape Drives can be ordered with the 3592
Tape Drives or supplied by the customer.)

This feature on the frame indicates that the customer is providing
the cables from the 3592 Model J70 to a customer supplied fibre
channel switch and cables from the switch or controller
to the 3592 Model J1A tape drives.

• Feature type: No Charge
  
• Required feature: No
  
• Maximum number of features: One.
  
• Installation: Plant Only
  
• Prerequisites: Feature #3491 or #9491 is required on the 3592 Model
  J70 Controller. (This feature is not supported on a frame with a 3590
  Model A60 Controller.) This feature is mutually exclusive with
  Features #3464, #3474, #3486, or #3491.
  

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(#1901) Dual AC Power

This feature provides a power switch to allow connection of two line
cords to two independent branch power circuits. Two line cords, instead
of a single line cord, of the default or specified line cords
(either 110 V ac or 220 V ac) are provided when feature #1901 is ordered.
The power switch monitors the ac line voltage on the primary power
line and automatically switches to the alternate ac line feed
if the incoming voltage is lost in a 3494 Tape Library that has
the 3494 Model HA1 High Availability Frames installed.
This feature cannot be installed if a
3590 Model A60 Controller is installed in the 3494 Model D24.

• Maximum number of features: One
  
• Required feature: No.
  
• Prerequisite: Cannot be installed if feature #4660, #4665, #9665,
  or #9666 is installed.
  
• Plant or Field Installation
  

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(#3486) 2Gb FC Drive Attach

This feature includes the required mounting hardware and instructions
for installing the 2Gb Fibre Channel Switch in the 3494 Model D24,
including the associated Ethernet cabling between the 3592 Model J70 and
the switch and drives in that Model D24 for a total of 16 Tape Drives.
Up to 8 3592 Tape Drives in the 3494 adjacent frame can be attached to
the Model J70 Controller.

• Feature type: Chargeable
  
• Required feature: No
  
• Maximum number of features: One.
  
• Installation: Plant or Field
  
• Prerequisites: Feature #3487 or #4887 must be installed on the 3592
  Model J70 Controller. This feature is mutually exclusive with
  Features #3464, #3474, #3491, or #9491.
  

(#3490) Redundant 2Gb Attach

This feature provides the mounting hardware and instructions
for installing a second 2Gb Fibre Channel Switch.

• Feature type: Chargeable
  
• Required feature: No
  
• Maximum number of features: One
  
• Installation: Plant or Field
  
• Prerequisites: Feature #3486 and a second feature #3487 or
  #4887 on the Model J70.
  

(#3491) External Fabric Support Field

This feature on the frame indicates that 3592 Model J1A
Tape Drives will be connected to 3592 Model J70 Controller through
an external customer-supplied fibre channel switch or directly
connect to the controller.

The customer is responsible for providing the cables from the 3592
Model J70 installed in a Model D24 frame to a customer-supplied fibre
channel switch. (Cables from the switch or controller
to the 3592 Model J1A Tape Drives can be ordered with the 3592
Tape Drives or supplied by the customer.)

• Feature type: Chargeable
  
• Required feature: No
  
• Maximum number of features: One.
  
• Installation: Field Only
  
• Prerequisites: Feature #3491 or #9491 are required on the 3592 Model
  J70 Controller. (This feature is not supported on a frame with a 3590
  Model A60 Controller.) This feature is mutually exclusive with
  Features #3464, #3474, #3486, or #9491.
  

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