Load balancing to support tape and disk subsystems on shared...

Details Load balancing to support tape and disk subsystems on shared... Load balancing to support tape and disk subsystems on shared...

2006-06-06

2006-06-06

Verbrugge, Kevin (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S162000

Reexamination Certificate

active

07058758

ABSTRACT:
A mechanism is provided for monitoring I/O activity of each device and the total I/O activity for each adapter. When there is low I/O activity for the tape subsystem, the I/O for the disk subsystems may be spread across all available adapters and paths. When I/O activity for the tape subsystem increases, the I/O activity for the disk subsystems may be reduced on the adapter processing the tape I/O, but will continue across all other adapters. If the tape subsystem begins to report errors due to I/O starvation, the disk I/O activity may be adjusted until the errors stop.

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