David:
This option is different than Clear_Tdisk?
> User Group Number - WAV201009
> Document Status - Recognized
> Title - Provide DSE option for CP temp disks
> IBM agrees with the request and a solution appears to be a desirable
> objective. A solution however may not presently appear feasible or
> implementable. No IBM commitment is made or implied as to the eventual
> delivery of an acceptable solution.
>From "CP Planning and Admin"":
Clearing Temporary Disk Space
In some previous VM systems, CP cleared only cylinder 0, track 0, of a
temporary
disk before allocating temporary disk space. As a result, data owned by the
previous user was available to the current user of the temporary disk. This
created
a data integrity exposure. With z/VM, temporary disk space can be
optionally
cleared completely to avoid this integrity exposure.
To eliminate user access to sensitive data remaining on a temporary disk,
use the
CLEAR_TDISK operand on the FEATURES system configuration file statement or
the SYSCLR operand of the SYSRES macroinstruction to specify whether
temporary disk space is to be cleared. If space is to be cleared, it is
cleared at the
following times:
- at IPL time,
- when CP volumes that contain temporary disk space are attached to the
system,
or
- when a temporary disk is detached from a user
______________________________________________
Clovis
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| From: |
|------------>
>--------------------------------------------------------------------------------------------------------------------------------------------------|
|David Boyes <dbo...@sinenomine.net>
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| To: |
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|IBMVM@LISTSERV.UARK.EDU
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| Date: |
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>--------------------------------------------------------------------------------------------------------------------------------------------------|
|02/11/2010 17:26
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| Subject: |
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>--------------------------------------------------------------------------------------------------------------------------------------------------|
|FW: WAVV201005, WAVV201009 requirement updates
|
>--------------------------------------------------------------------------------------------------------------------------------------------------|
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| Sent by: |
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>--------------------------------------------------------------------------------------------------------------------------------------------------|
|The IBM z/VM Operating System <IBMVM@LISTSERV.UARK.EDU>
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FYI.
> User Group Number - WAVV201005
> Document Status - Suggestion
> Title - Add CP option to warn/refuse to IPL a guest consuming excessive
> RAM
> IBM will use this request as input to planning but no commitment is
> made or
> implied. This request will not be updated.
> User Group Number - WAV201009
> Document Status - Recognized
> Title - Provide DSE option for CP temp disks
> IBM agrees with the request and a solution appears to be a desirable
> objective. A solution however may not presently appear feasible or
> implementable. No IBM commitment is made or implied as to the eventual
> delivery of an acceptable solution.
