rolling IPL - Messmer The Brain House

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zOS mainframe – highlights 4nd quarter unplanned S:\OPERATIONS\Leadership\Statistics\2005\zOS Mainframe IPL statistic_2005.ppt ♦ November 3.: sysplex-wide shutdown due to a hardware-related problem ♦ November 3.: crash of 4 LPAR due to a hardware related problem ♦ November 5.: crash of 8 LPAR due to a hardware-related problem ♦ November 11./ 12.: 2 sysplex wide shutdown due to SRB problem planned ♦ several IPL's needed to solve storage-problems for DB2 DBM1 adress space ♦ November 19.: rolling POR (HCD change) all 6 prod CEC during the day ♦ December 4.: sysplex-wide shutdown need due to DB2 catalog reorg ♦ December 10.: move SSE Lpar's to new CEC 13
zOS mainframe – Summary 2005 view zOS Operations ° + � More then 2'100 IPL's in 2005 � ~ 176 IPL per month � Based on 58 installed LPAR each LPAR was IPL'd 3 times � 7 UBS-releases implemented in 2005 on all LPAR's S:\OPERATIONS\Leadership\Statistics\2005\zOS Mainframe IPL statistic_2005.ppt � We are using the sysplex funcionality to implement changes with rolling IPL (or POR) without service impact � Expl: services 100% available with 4 LPAR after a crash of 8 images (November) and the restart of all 8 affected DB instances on another LPAR (service impact 27 minutes) - � Total 8 unplanned sysplex-wide shutdown to solve a incident � 3 month (Mai, August, November) with more then 15% unplanned IPL � Total 209 unplanned IPL's in 3 quarters (April – December) in 2005 � DB2 instances needs to be restartet due to a known DBM1 storage problem 14
Page 1 and 2: zOS mainframe (SSP & IB) - monthly
Page 3 and 4: S:\OPERATIONS\Leadership\Statistics
Page 5 and 6: zOS mainframe - explanation The spe
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rolling IPL - Messmer The Brain House

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