OA48707: NEW FUNCTION - EXTENT SPACE EFFICIENT SUPPORT ( THIN PROVISIONING )

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• New Function - EXTENT SPACE EFFICIENT SUPPORT
  (THIN PROVISIONING)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of D/T2107 storage subsystems.         *
  ****************************************************************
  * PROBLEM DESCRIPTION: New Function: Extent Space Efficient    *
  *                      (Thin Provisioning) support for CKD     *
  *                      on z/OS                                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

Temporary fix

Comments

• New Function:
  This PTF provides base support for Extent Space Efficient CKD
  Volumes (Thin Provisioning).
  Extent Space Efficient is the replacement on the DS8000
  family of storage controllers for the track space efficient
  FlashCopy support provided in 2007 and sunset with the
  DS8880 (R8.0) delivery.
  Physical space for extent space efficient volumes is allocated
  on an extent (21 cylinders) directly from the volume's extent
  pool rather than on a track by track basis from a space
  efficient repository, improving the performance of space
  efficient volumes.
  The new Extent Space Efficient volumes are not limited to
  FlashCopy targets and FlashCopy is not limited to NOCOPY
  Relationships like it was for Track Space Efficient.
  Also, there are no special keywords required in order to
  create FlashCopy or PPRC relationships to Extent Space
  Efficient volumes.
  
  Exploitation of this new function on the D/T2107 storage
  subsystem requires this PTF and a microcode (LMC) upgrade.
  For minimum microcode levels and current maintenance required
  to exploit this new function, refer to the Technical
  Information section of announcement letter ENUS116-072 which
  can be located by using the following website:
  http://www-01.ibm.com/common/ssi
  Enter Type of content: Announcement Letter
  and Keywords: ENUS116-072
  Note that if you have never used this website, you may need
  to do some initial setup, like language selection.
  Or, you can contact IBM Hardware support for the current
  D/T2107 LMC.
  Installation of this PTF will preserve existing function when
  run with existing supported LMC.
  
  The following updates will be reflected in a future revision
  of the z/OS DFSMSdss Storage Administration manual (SC23-6868):
  All existing mentions of "Space Efficient" will be changed to
  "Track Space Efficient".  This includes changing the title of
  the existing section titled "Choosing space efficient FlashCopy
  with the FCSETGTOK keyword" to "Choosing track space efficient
  FlashCopy with the FCSETGTOK keyword".
  
  A  new section on volume types will be added to the chapter
  titled Requirements for running DFSMSdss
  
  You can use DFSMSdss with the following DASD volume types:
  * Standard volumes
  * Track space efficient volumes
  * Extent space efficient volumes
  
  Volume Types
  Standard volumes are volumes that have all physical storage
  allocated to them at the time that the volume is defined.
  Standard volumes are also known as Fully Provisioned volumes
  (FP).
  
  Track Space Efficient (TSE) volumes are volumes that have no
  physical space allocated to them until the first write is done
  to the volume.  The physical space is allocated to the volume
  in tracks from the Space Efficient repository, which is a
  separate volume, defined in each extent pool, used only for TSE
  volume physical space, and not accessible directly from any
  host.  TSE volumes will be phased out with the introduction of
  ESE volumes. TSE volumes are not supported on DS8880 (R8.0) or
  above.
  
  Extent Space Efficient (ESE) volumes, also commonly called
  Thin Provisioned (TP) volumes, will have no physical space
  allocated to them until the first write is done to the
  volume.  Physical space is allocated on demand to the volume
  in extents directly from the extent pool where the volume
  is defined, rather than on a track by track basis from a space
  efficient repository, improving the performance of space
  efficient volumes. ESE volumes differ from TSE volumes in
  behavior as they are not limited to only being FlashCopy targets
  and when used for FlashCopy, the relationships are not limited
  to NOCOPY.  There are no special keywords required in order to
  create FlashCopy relationships with Extent Space Efficient
  volumes.
  
  In the section titled "Moving Data Sets with FlashCopy" a new
  subsection will be added titled "Copying data sets to Extent
  Space Efficient Volumes".
  
  Extent Space Efficient (ESE) volumes, also commonly called
  Thin Provisioned (TP) volumes, will have no physical space
  allocated to them until the first write is done to the
  volume.  Physical space is allocated on demand to the volume
  in extents directly from the extent pool where the volume
  is defined, rather than on a track by track basis from a
  space efficient repository, improving the performance of space
  efficient volumes. ESE volumes differ from TSE volumes in
  behavior as they are not limited to only being FlashCopy
  targets and when used for FlashCopy, the relationships are not
  limited to NOCOPY.  There are no special keywords required in
  order to create FlashCopy relationships with Extent Space
  Efficient volumes. Please refer to the section titled Volume
  Types for more information.
  
  Under the COPY command, the keyword description for FCSETGTOK
  is changed to include the following note:
  For additional information on Track Space Efficient please refer
  to the section on Volume Types.
  KEYWORDS: D/T2107 FLASHCPY/K
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  OA48709 OA48710 OA48711 PI47180 UA82298 UA82299

Modules/Macros

• ADRCVSAM ADRDFRGD ADRMOVER ADROPNCL ADRPDSEX
  ADRT0MI
  

Fix information

• Fixed component name

  DFSMSDSS, ISMF

• Fixed component ID

  5695DF175

Applicable component levels

• R210 PSY UA82298

     UP16/07/27 P F607

• R220 PSY UA82299

     UP16/07/27 P F607

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.