Asset ID:	1-71-1020838.1
Update Date:	2011-01-19
Keywords:

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Solution Type  Technical Instruction Sure

Solution  1020838.1 :   SL8500 - Enabling/Disabling Float Feature for Cartridges in Libraries  


PreviouslyPublishedAs
265748

Description
How to enable and disable the cartridge float feature in the library.
This is not a library hardware function, rather it is a library software control function within ACSLS or HSC.


Steps to Follow
Refer to the following depending on whether ACSLS or HSC is used:
From 7.1 ACSLS PDF:

Floating Cartridges During a Dismount
When cartridges are dismounted, ACSLS tries to avoid pass-thru activity among LSMs by assigning a new home cell whenever the cartridge's old home cell is in a different LSM than the transport. This is ACSLS's default behavior. To disable this feature, use the “Extended Store” feature for an LSM.
Cartridges being dismounted are “floated” to a new home cell to avoid movement between LSMs.

From HSC operators Guide 6.2:

• If specifically directed to return the cartridge to its original home cell location (using the MNTD Float OFf command), the robot places the cartridge into a PTP cell to begin passing it back to the original LSM.

Note: Refer to “Controlling Pass-Thru Operations After Dismount” on page 268 for instructions on using the MNTD Float OFf command.

Page 268:   Controlling Pass-Thru Operations After Dismount
In a multiple-LSM configuration, a mount request can require one or more pass-thru operations if the specified cartridge and transport are in different LSMs. When the cartridge is dismounted, the HSC normally attempts to assign the cartridge a new cell location in the LSM where the dismount occurs. A pass-thru operation is performed after dismount only when there are no available cells in the LSM. This feature is called ‘‘floating.’’
If you want the dismounted cartridge to be returned to its original home cell location, you can disable floating by issuing the following command:
MNTD FLOAT(OFF)

Notes:
• Refer to “MNTD (Mount/Dismount Options) Command and Control Statement” on page 153 for details on command syntax and parameters.
• The command must be issued once for each host where you want floating disabled.

This can be accomplished by one or more entries in the startup parameters (PARMLIB control statements).
Refer to ‘‘PARMLIB Control Statements’’ in the HSC System Programmer’s Guide for more information.



Product
Sun StorageTek ACSLS Automated Cartridge System Library Software
Sun StorageTek Host Software Component Software
Sun StorageTek SL8500 Modular Library System

SL8500, ACSLS 7.1, HSC 6.2, Float command, Mount, Dismount option, PTP

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