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

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SET RDEVICE DASD<br />

►►<br />

Set<br />

Authorization<br />

Purpose<br />

RDEVice<br />

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

rdev<br />

rdev1-rdev2<br />

Privilege Class: B<br />

You can enter SET RDEVICE comm<strong>and</strong>s for the following DASD types: 3380, 3390<br />

<strong>and</strong> 9336.<br />

These DASD types respond to the sense ID request instruction. You only need to<br />

enter SET RDEVICE comm<strong>and</strong>s for them if you want to specify one of the following<br />

oper<strong>and</strong>s:<br />

v SHARED YES<br />

v MDC DFLTOFF<br />

v MDC OFF<br />

v NOTSENSED.<br />

rdev<br />

rdev1-rdev2<br />

specifies one or more real device numbers to be defined or changed. Each rdev<br />

specified must be a hexadecimal number between X'0000' <strong>and</strong> X'FFFF'. The<br />

maximum number of devices allowed within a range is 256.<br />

TYpe DASD<br />

tells <strong>CP</strong> the specified device or devices are DASDs.<br />

SHAREd<br />

tells <strong>CP</strong> to share the devices concurrently among multiple real systems.<br />

NO<br />

TYpe<br />

DASD<br />

SHAREd<br />

SHAREd<br />

NO<br />

YES<br />

tells <strong>CP</strong> not to share the devices among multiple real systems. The default<br />

is NO.<br />

YES<br />

tells <strong>CP</strong> to share the devices among multiple real systems.<br />

MDC<br />

tells <strong>CP</strong> whether you want the device or devices to be cached in the minidisk<br />

cache.<br />

DFLTON<br />

(the default if the SHARED option is not specified or the SHARED NO<br />

option is specified.) Tells <strong>CP</strong> to cache data on the real device in the<br />

minidisk cache except for minidisks for whom caching is specifically<br />

disabled via the MINIOPT NOMDC directory statement or the SET<br />

MDCACHE MDISK OFF comm<strong>and</strong>.<br />

MDC<br />

MDC<br />

MDC<br />

DFLTON<br />

OFF<br />

DFLTOFF<br />

SET RDEVICE DASD<br />

SENSed<br />

NOTSENSed<br />

►◄<br />

Chapter 2. <strong>CP</strong> <strong>Comm<strong>and</strong>s</strong> 1345

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