Quantum LTO 2U Instruções de Operação descarregar pdf (Página 189)

JULY 2007 MAGNUM 224, MAGNUM 448, STORAGELIBRARY T24, OR STORAGELOADER 2U

19-3

WHAT YOU SEND TO THE LIBRARY

For an Element Type Code of 0h, the element types are reported in element

address order, beginning with the Starting Element Address.

Starting Element Address – Bytes 02 and 03

This field indicates the element address at which to start the transfer of data.

Only elements with addresses greater than or equal to the starting address are

reported. Element descriptor blocks are not generated for undefined element

addresses.

Number of Elements – Bytes 04 and 05

This field represents the actual number of element descriptors to be returned.

This is an actual number of element descriptors to be returned, not an element

address range.

The library returns element descriptors of the requested element type, starting

with the first element address equal to or greater than the value in the Element

Address field. All element descriptors are returned for the number of element

descriptors specified in this field, or the number of element descriptors

available, whichever is less.

It is not an error to specify 0FFFFh as a value for this field if you want the

library to return all available elements.

Allocation Length – Bytes 07 through 09

The Allocation Length specifies the total available length in bytes you are

allocating for returned element descriptors. Only complete element

descriptors are returned. The library returns element descriptors until one of

the following conditions is met:

 All available element descriptors have been returned.

 The number of element descriptors specified in the Number of Elements

field has been returned.

 The remaining allocation length is smaller than the next complete element

descriptor or header to be returned.

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Quantum LTO 2U Instruções de Operação Página 189