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z/VM: CP Commands and Utilities Reference - z/VM - IBM

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HYPERSWAP<br />

►►<br />

HYPerswap<br />

Authorization<br />

Purpose<br />

Oper<strong>and</strong>s<br />

DISable<br />

ENAble<br />

QUIesce<br />

RESume<br />

SWAp<br />

▼ rdev<br />

rdev.numDevs<br />

VOLid volid<br />

ALL<br />

▼ sourceRdev targetRdev<br />

sourceRdev.numDevs targetRdev<br />

VOLid sourceVolid targetVolid<br />

Privilege Class: B<br />

▼ rdev<br />

rdev.numDevs<br />

VOLid volid<br />

Use the HYPERSWAP comm<strong>and</strong> to perform Disaster Recovery failover processing<br />

on PPRC-linked DASD.<br />

The DISable function disables the real devices for Hyperswap automatic quiesce<br />

processing.<br />

The ENAble function enables the real devices for Hyperswap automatic quiesce<br />

processing.<br />

The QUIesce function stops de-queuing all Start I/O requests hanging off the<br />

queues for the real devices entered.<br />

The SWAp function will swap all relevant real device information associated with the<br />

primary PPRC device (source) entered as the first device in the device pair with the<br />

secondary PPRC device (target) that is entered as the second device in the device<br />

pair. When operating on ranges of device pairs the range length (numDevs) is equal<br />

for both devices <strong>and</strong> there exists a one-to-one correspondence device number.<br />

The RESume function starts de-queuing all Start I/O requests hanging off the<br />

queues for the previously quiesced devices.<br />

DISable<br />

tells <strong>CP</strong> to perform the Disable function.<br />

ENAble<br />

tells <strong>CP</strong> to perform the Enable function.<br />

QUIesce<br />

tells <strong>CP</strong> to perform the Quiesce function.<br />

HYPERSWAP<br />

►◄<br />

Chapter 2. <strong>CP</strong> <strong>Comm<strong>and</strong>s</strong> 463

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