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A Method and System for Sending a Volume Identifier and Header data by a Tape Drive during a Not-Ready to Ready Transition

IP.com Disclosure Number: IPCOM000237698D
Publication Date: 2014-Jul-02
Document File: 1 page(s) / 63K

Publishing Venue

The IP.com Prior Art Database

Abstract

A method and system is disclosed for sending a volume identifier and header data to a host by a tape drive during a Not-ready to ready transition.

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A Method and System for Sending a Volume Identifier and Header data by a Tape Drive during a Not-Ready to Ready Transition

When a tape drive reaches a ready state, the tape drive sends notification to a host for Not-ready to ready transition. Then, a host software invokes an OPEN function to read a volume identifier (VOLID) and header data from the tape drive. Further, the host provides a command to perform rewind, read, read, read in a sequence to acquire the VOLID and header data. The sequence of process performed to acquire the VOLID and header data requires more channel activity and is time consuming as

well. The host software requires the VOLID and header data to verify the tape drive and invokes processing of three blocks of header data for use in a tape management system.

Disclosed is a method and system for sending a volume identifier (VOLID) and header data to a host by a tape drive during a Not-ready to ready transition. The method and system facilitates reduction in processing time required for acquiring the VOLID and header data.

In accordance with the method and system disclosed herein, the tape drive performs read-ahead process during a ready-processing period. In an exemplary implementation, the tape drive performs the read-ahead process. The host reads the

VOLID and header data during tape load/ready-processing period. Hence, the header data is readily available in the buffer. Subsequently, the tape drive sends three blocks of header data/files t...