Flashes (Alerts)
Abstract
DS8880/DS8900F Customers using z/OS backup and restore utilities with Preserve Mirror are exposed to a loss of access.
Content
Risk classification
High Impact
Risk categories
Possible System Outage
Affected Domain
For z/OS using backup and restore utilities with Preserve Mirror
DS8880 running 88.54.31.0 through 88.55.9.1.
DS8900 running 89.2.xx.x and below
Description
Customers using z/OS backup and restore utilities that call FlashCopy with Preserve Mirror may experience a loss of access when restoring an object using those utilities.
Mitigation
If Multiple Incremental FlashCopy function is not needed, perform the following procedure;
- Withdraw the FlashCopy relationship
- Change the z/OS DEVSUP settings as follows
The keyword in DEVSUPxx is: MULTINCRFLC(NO|YES) Set to NO to disable Multi-Incremental FlashCopy
Re-establish FlashCopy, which will cause a full copy on the initial establish
- Refer to the link below for additional information
https://www.ibm.com/support/knowledgecenter/SSLTBW_2.3.0/com.ibm.zos.v2r3.ieae200/ieae200165.htm
If Multiple Incremental FlashCopy function is needed, install the fix level(s) below.
Fix
Update to the following code levels:
DS8880:
R8.5 SP5.2 - 88.55.9.2 or R8.5 SP6 - 88.56.9.0 or higher
DS8900F:
R9.0 SP3 - 89.3.6.0 or higher
Reference ID:
350053
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Document Information
Modified date:
24 May 2022
UID
ibm16253915