Virtualization of data storage drives of an automated data storage library
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 11, 2003
Grant Date -
N/A
app pub date -
Sep 10, 2001
filing date -
Sep 10, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Drive image providers of a virtualization system for an automated data storage library provide an image of a fixed plurality of virtual data storage drives with fixed identifications to a host application. A drive resource provider, at any one time, assigns any number 'm' of a pool of 'n' drives to the drive image providers, and 'n'-'m' of the pool are freed and available for assignment. The drive resource provider responds to a triggering event requesting a drive, and dedicates one of the 'n'-'m' drives of the pool to the virtual drive. The drive image provider characterizes and directs communication between the host and the dedicated drive as a fixed virtual drive; and prior to the dedication of a drive, characterizes the virtual drive to the requesting host application as 'not ready'.
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