HVTHCA - Hydra Cluster Summary File

The Hydra Cluster Summary file contains a summarized roll-up of statistics from all the Vnode and Hnode work files to provide a view of all I/O, cache usage, and virtual and physical tape activity at a tape server cluster level. This record is produced for every 15-minute measurement interval.
mics142
The Hydra Cluster Summary file contains a summarized roll-up of statistics from all the Vnode and Hnode work files to provide a view of all I/O, cache usage, and virtual and physical tape activity at a tape server cluster level. This record is produced for every 15-minute measurement interval.

File Organization

The table below identifies data elements by which the file is sequenced and summarized in each timespan. N/A indicates that the file is not supported in a timespan. At the DETAIL level, data is sequenced but not summarized.
The timespans in which a file is supported are defined by each installation when
MICS
is installed. Therefore, this table has been generated as part of the installation process to accurately reflect the
MICS
system at your installation.
HVTHCA Sort Sequence and Data Granularity
+---------+-------------------------------------------------+ |Timespan | Level of Data Granularity                       | +---------+-------------------------------------------------+ |         |                                                 | |  DETAIL |SYSID     HVTGRID   HVTCLID   YEAR      MONTH    | |         |DAY       HOUR      ENDTS                        | |         |                                                 | |  DAYS   |SYSID     HVTGRID   HVTCLID   YEAR      MONTH    | |         |DAY       HOUR                                   | |         |                                                 | |  WEEKS  |SYSID     HVTGRID   HVTCLID   YEAR      WEEK     | |         |ZONE      HOUR                                   | |         |                                                 | |  MONTHS |SYSID     HVTGRID   HVTCLID   YEAR      MONTH    | |         |ZONE                                             | |         |                                                 | |  YEARS  |  N/A                                            | |         |                                                 | +---------+-------------------------------------------------+ |  TABLES |  N/A                                            | +---------+-------------------------------------------------+                         Generation Date:   Thu, Apr 1, 2010
This file was generated with ESSENTIAL=ALL option in effect. All data elements that are defined in the file are generated.
This file was generated with DERIVED=DEFault option in effect. The complex definition of the DERIVED option controls whether the data elements are kept on the file on auxiliary storage.

Data Elements List

The following table identifies data elements that are contained in this file.
GENERATION DATE: Tue, Nov 6, 2018 Note: Essential data elements are identified by an "E" under the Timespan asterisk (*) column. Time- Data Data Element Span * Element Description (LABEL) ------- -------- ---------------------------------------- Sequence/Summary Data Elements XD....E DAY - Day of Month XDW...E HOUR - Hour of Day XDWM..E HVTCLID - Cluster ID XDWM..E HVTGRID - Grid Composite ID XD.M..E MONTH - Month of Year XDWM..E SYSID - System Identifier XDW...E WEEK - Week of Year XDWM..E YEAR - Year of Century XDWM..E ZONE - Time Zone Common Data Elements XD....E DAYNAME - Name of Day of Week XDWM..E DURATION - Recording Interval Time XDWM..E ENDTS - End Time Stamp XDWM..E HVTDLSN - Distributed Library Sequence Number XDWM..E HVTMODEL - Node Machine Model XDWM..E HVTMTYPE - Node Machine Type XD....E HVTRVN - Record Version Number XDWM..E HVTSN - Node Serial Number XDWM..E HVTVECD - VE Code Level XDWM..E INTERVLS - Number of Recording Intervals XD....E ORGSYSID - Originating System Identification XDWM..E STARTTS - Start Time Stamp Retained Data Elements XDWM..E HCABDCT - Base Deferred Copy Throttle Value (Sec) X.....E HCACTR - Copy Throttle Reason X.....E HCADCTR - Deferred Copy Throttle Reason X.....E HCAHWTR - Host Write Throttle Reason XDWM..E HCAMXCT - Configured Max Channel Throughput XDWM..E HCAPMT - Pre-migration Throttle Threshold (GB) XDWM..E HCATBDCT - TA Base Deferred Copy Throttle (Sec) X.....E HCATCTR - TA Copy Throttle Reason X.....E HCATDCTR - TA Deferred Copy Throttle Reason X.....E HCATHWTR - TA Host Write Throttle Reason Accumulated Data Elements XDWM..E HCAALV - Sum of Active Logical Volumes XDWM..E HCABPV - Borrowed Private Stacked Volume Count XDWM..E HCABSV - Borrowed Scratch Stacked Volume Count XDWM..E HCACHM - Virtual Cache-Hit Mounts XDWM..E HCACMM - Virtual Recall Mounts XDWM..E HCACPLFS - CT - Low on Cache Free Space XDWM..E HCACPNOT - CT - No Throttling XDWM..E HCACPPSS - CT - Pre-migrate Steady State XDWM..E HCACPTCT - Copy Predominate Throttle Count XDWM..E HCACR - Data Read from Cache (uncomp MB) XDWM..E HCACRW - Total Data R/W Cache (uncomp MB) XDWM..E HCACW - Data Written to Cache (uncomp MB) XDWM..E HCADCCRU - DCT - Cluster Resource Usage XDWM..E HCADCHIO - DCT - Preferring Host IO XDWM..E HCADCIMC - DCT - Immediate Copy Throttling XDWM..E HCADCNOT - DCT - No Throttling XDWM..E HCADCTCT - Deferred Copy Throttle Count XDWM..E HCADRIC - Sum of Data Resident in Cache (GB) XDWM..E HCADRP - Total Data Read from Pool (MB) XDWM..E HCADWP - Total Data Written to Pool (MB) XDWM..E HCAFICCR - Compressed Bytes Read FICON (MB) XDWM..E HCAFICCW - Compressed Bytes Written FICON (MB) XDWM..E HCAFICUR - Uncompressed Bytes Read FICON (MB) XDWM..E HCAFICUW - Uncompressed Bytes Written FICON (MB) XDWM..E HCAFRM - Virtual Fast-Ready Mounts XDWM..E HCAFTM - Virtual Fast-Ready Mount Time XDWM..E HCAHTM - Virtual Cache-Hit Mount Time XDWM..E HCAHWECC - HWT - Excess Cached Content for Copy XDWM..E HCAHWGPS - HWT - Grid Pre-migrate Steady State XDWM..E HCAHWIMC - HWT - Immediate Copy Throttling XDWM..E HCAHWLFS - HWT - Low on Cache Free Space XDWM..E HCAHWNOT - HWT - No Throttling XDWM..E HCAHWPSS - HWT - Pre-migrate Steady State XDWM..E HCALPR - Selective Port Resets XDWM..E HCALZ4CR - Compressed Bytes Read LZ4 (MB) XDWM..E HCALZ4CW - Compressed Bytes Written LZ4 (MB) XDWM..E HCALZ4UR - Uncompressed Bytes Read LZ4 (MB) XDWM..E HCALZ4UW - Uncompressed Bytes Written LZ4 (MB) XDWM..E HCAMAD - Sum of Active Logical Volume Data (MB) XDWM..E HCANUMBS - Channel Blocks Written XDWM..E HCAPPM - Physical Pre-Migrate Mounts XDWM..E HCAPRM - Physical Recall Mounts XDWM..E HCAPSM - Physical Security Data Erase Mounts XDWM..E HCAPVC - Private Stacked Volume Count XDWM..E HCARCM - Physical Reclaim Mounts XDWM..E HCARRV - Read Only Recovery Volume Count XDWM..E HCARTM - Virtual Recall Mount Time XDWM..E HCASACT - Sum of Avg Copy Throttle Value XDWM..E HCASAFCT - Sum of Times Cluster Ahead of FICON Chnl XDWM..E HCASAPD - Sum of Available Physical Devices XDWM..E HCASATCT - Sum of Avg TA Copy Throttle XDWM..E HCASATDT - Sum of Avg TA Deferred Copy Throttle XDWM..E HCASATOT - Sum of Overall Average TA Throttle XDWM..E HCASATWT - Sum of Avg TA Write Overrun Throttle XDWM..E HCASAWOT - Sum of Avg Write Overrun Throttle Value XDWM..E HCASBFCT - Sum of Times Cluster Behind FICON Chnl XDWM..E HCASCP - Sum of Active Cache Partitions XDWM..E HCASCPB - Sum of Avg CPU Percent Busy XDWM..E HCASDCT - Sum of Avg Deferred Copy Throttle XDWM..E HCASDLY - Sum of Avg Throughput Delay Time XDWM..E HCASIPD - Sum of Installed Physical Devices XDWM..E HCASLM - Sync Mode Mounts XDWM..E HCASMD - Sum of Size of Migrated Data (GB) XDWM..E HCASMDU - Sum of Average Max Disk Usage Percentage XDWM..E HCASPCD - Sum of Host Throttle Delay Percentage XDWM..E HCASPDM - Sum of Avg Physical Drives Concur Mounte XDWM..E HCASPR - System Port Resets XDWM..E HCASSV - Total Common Scratch Pool Volumes XDWM..E HCASTM - Sync Mode Mount Time XDWM..E HCASTOAT - Sum of Overall Average Throttle Value XDWM..E HCASTUC - Sum of Total Used Cache (GB) XDWM..E HCASTUFC - Sum of Total Used Flash Cache (GB) XDWM..E HCASVC - Scratch Stacked Volume Count XDWM..E HCASVCM - Sum of Avg Virtual Drives Concur Mounted XDWM..E HCASVDC - Sum of Virtual Drives Configured XDWM..E HCATCPLF - CT/TA - Low on Cache Free Space XDWM..E HCATCPNO - CT/TA - No Throttling XDWM..E HCATCPPS - CT/TA - Pre-migrate Steady State XDWM..E HCATCPTC - TA - Copy Predominate Throttle Count XDWM..E HCATDCCR - DCT/TA - Cluster Resource Usage XDWM..E HCATDCHI - DCT/TA - Preferring Host IO XDWM..E HCATDCIM - DCT/TA - Immediate Copy Throttling XDWM..E HCATDCNO - DCT/TA - No Throttling XDWM..E HCATDCTC - TA - Deferred Copy Throttle Count XDWM..E HCATHWEC - HWT/TA - Excess Cached Content for Copy XDWM..E HCATHWGP - HWT/TA - Grid Pre-migrate Steady State XDWM..E HCATHWIM - HWT/TA - Immediate Copy Throttling XDWM..E HCATHWLF - HWT/TA - Low on Cache Free Space XDWM..E HCATHWNO - HWT/TA - No Throttling XDWM..E HCATHWPS - HWT/TA - Pre-migrate Steady State XDWM..E HCATPM - Total Physical Mounts XDWM..E HCATTM - Total Physical Mount Time XDWM..E HCATVC - Sum of Total Cache Size (GB) XDWM..E HCATVM - Total Virtual Mounts XDWM..E HCATWRTC - TA - W/Overrun Predominate Throttle Cnt XDWM..E HCAUVC - Volumes in Unavailable Status XDWM..E HCAVDR - Data Read from Cache (comp MB) XDWM..E HCAVDW - Data Written to Cache (comp MB) XDWM..E HCAVRW - Total Data R/W to Cache (comp MB) XDWM..E HCAVVIC - Sum of Virtual Volumes in Cache XDWM..E HCAWROCT - W/Overrun Predominate Throttle Count XDWM..E HCAWSE - Stacked Volumes Waiting Security Data XDWM..E HCAZSTCR - Compressed Bytes Read ZSTD (MB) XDWM..E HCAZSTCW - Compressed Bytes Written ZSTD (MB) XDWM..E HCAZSTUR - Uncompressed Bytes Read ZSTD (MB) XDWM..E HCAZSTUW - Uncompressed Bytes Written ZSTD (MB) XDWM..E HCA00KB - 0 to 2K Channel Blocks Written XDWM..E HCA02KB - > 2K to 4K Channel Blocks Written XDWM..E HCA04KB - > 4K to 8K Channel Blocks Written XDWM..E HCA08KB - > 8K to 16K Channel Blocks Written XDWM..E HCA16KB - > 16K to 32K Channel Blocks Written XDWM..E HCA32KB - > 32K to 64K Channel Blocks Written XDWM..E HCA64KB - > 64K Channel Blocks Written Minimum Data Elements XDWM..E HCAMNCDS - Min Channel Data per Second (MB) XDWM..E HCAMNCR - Min Data Read from Cache (uncomp MB) XDWM..E HCAMNCRC - Min Compression Ratio Read from Cache XDWM..E HCAMNCW - Min Data Written to Cache (uncomp MB) XDWM..E HCAMNCWC - Min Compression Ratio Write to Cache XDWM..E HCAMNMTM - Min Physical Mount Time XDWM..E HCAMNPDM - Min Physical Drives Concur Mounted XDWM..E HCAMNVCM - Min Virtual Drives Concur Mounted XDWM..E HCAMNVDR - Min Data Read from Cache (comp MB) XDWM..E HCAMNVDW - Min Data Written to Cache (comp MB) Maximum Data Elements XDWM..E HCAMXACT - Max Times Cluster Ahead of FICON Chnl XDWM..E HCAMXBCT - Max Times Cluster Behind FICON Chnl XDWM..E HCAMXCDS - Max Channel Data per Second (MB) XDWM..E HCAMXCPB - Max CPU Usage Percentage XDWM..E HCAMXCR - Max Data Read from Cache (uncomp MB) XDWM..E HCAMXCRC - Max Compression Ratio Read from Cache XDWM..E HCAMXCW - Max Data Written to Cache (uncomp MB) XDWM..E HCAMXCWC - Max Compression Ratio Write to Cache XDWM..E HCAMXDLY - Max Throughput Delay Time XDWM..E HCAMXDTR - Max Data Rate (G-bits) XDWM..E HCAMXLPR - Max Selective Port Resets XDWM..E HCAMXMDU - Max Disk Usage Percentage XDWM..E HCAMXMTM - Max Physical Mount Time XDWM..E HCAMXPCD - Max Percent Delay Due to Host Throttle XDWM..E HCAMXPDM - Max Physical Drives Concur Mounted XDWM..E HCAMXSPR - Max System Port Resets XDWM..E HCAMXVCM - Max Virtual Drives Concur Mounted XDWM..E HCAMXVDR - Max Data Read from Cache (comp MB) XDWM..E HCAMXVDW - Max Data Written to Cache (comp MB) Derived Data Elements XDWM..E HCAAVACP - Avg Active Cache Partitions XDWM..E HCAAVACT - Avg Times Cluster Ahead of FICON Chnl XDWM..E HCAAVALV - Avg Active Logical Volumes XDWM..E HCAAVAPD - Avg Physical Drives Available XDWM..E HCAAVBCT - Avg Times Cluster Behind FICON Chnl XDWM..E HCAAVBPV - Avg Borrowed Private Stacked Volumes XDWM..E HCAAVBSV - Avg Borrowed Scratch Stacked Volumes XDWM..E HCAAVBSZ - Avg Estimated Channel Blocksize XDWM..E HCAAVCDS - Avg Channel Data per Second (MB) XDWM..E HCAAVCHM - Avg Virtual Cache-Hit Mounts XDWM..E HCAAVCMM - Avg Virtual Recall Mounts XDWM..E HCAAVCPU - Avg CPU Percent Busy XDWM..E HCAAVCR - Avg Data Read from Cache (uncomp MB) XDWM..E HCAAVCRC - Avg Compression Ratio Read from Cache XDWM..E HCAAVCTV - Avg Copy Predominate Throttle Value XDWM..E HCAAVCW - Avg Data Written to Cache (uncomp MB) XDWM..E HCAAVCWC - Avg Compression Ratio Write to Cache XDWM..E HCAAVDCT - Avg Deferred Copy Throttle Value XDWM..E HCAAVDLY - Avg Throughput Delay Time XDWM..E HCAAVDRC - Avg Data Resident in Cache (GB) XDWM..E HCAAVFRM - Avg Virtual Fast-Ready Mounts XDWM..E HCAAVFTM - Avg Virtual Fast-Ready Mount Time XDWM..E HCAAVHTM - Avg Virtual Cache-Hit Mount Time XDWM..E HCAAVIPD - Avg Physical Drives Installed XDWM..E HCAAVMAD - Avg Active Logical Volume Data (MB) XDWM..E HCAAVMDU - Avg Max Disk Usage Percentage XDWM..E HCAAVMTM - Avg Physical Mount Time XDWM..E HCAAVOAT - Avg Overall Throttle Value XDWM..E HCAAVPCD - Avg Percent Delay due to Host Throttle XDWM..E HCAAVPDM - Avg Physical Drives Concur Mounted XDWM..E HCAAVPVC - Avg Private Stacked Volume Count XDWM..E HCAAVRTM - Avg Virtual Recall Mount Time XDWM..E HCAAVSMD - Avg Size of Migrated Data (GB) XDWM..E HCAAVSTM - Avg Sync Mode Mount Time XDWM..E HCAAVSVC - Avg Scratch Stacked Volume Count XDWM..E HCAAVTCT - Avg TA Copy Throttle Value XDWM..E HCAAVTDT - Avg TA Deferred Copy Throttle Value XDWM..E HCAAVTOT - Avg TA Overall Throttle Value XDWM..E HCAAVTUC - Avg Used Cache (GB) XDWM..E HCAAVTVC - Avg Cache Size (GB) XDWM..E HCAAVTVM - Avg Virtual Mounts XDWM..E HCAAVTWT - Avg TA Write Overrun Throttle Value XDWM..E HCAAVUFC - Avg Used Flash Cache (GB) XDWM..E HCAAVVCM - Avg Virtual Drives Concur Mounted XDWM..E HCAAVVDC - Avg Virtual Drives Configured XDWM..E HCAAVVDR - Avg Data Read from Cache (comp MB) XDWM..E HCAAVVDW - Avg Data Written to Cache (comp MB) XDWM..E HCAAVVSZ - Avg Virtual Volume Size (MB) XDWM..E HCAAVVVC - Avg Virtual Volumes in Cache XDWM..E HCAAVWOT - Avg Write Overrun Throttle Value XDWM..E HCAPCCHM - Pct Virtual Cache-Hit Mounts XDWM..E HCAPCCMM - Pct Virtual Recall Mounts XDWM..E HCAPCCPT - Pct Copy Predominate Throttle XDWM..E HCAPCCUT - Pct Cache Utilization XDWM..E HCAPCDCT - Pct Deferred Copy Throttle XDWM..E HCAPCFRM - Pct Virtual Fast-Ready Mounts XDWM..E HCAPCTCT - Pct TA - Copy Predominate Throttle XDWM..E HCAPCTDT - Pct TA - Deferred Copy Throttle XDWM..E HCAPCTWT - Pct TA - W/Overrun Predominate Throttle XDWM..E HCAPCVCM - Pct Virtual Cache-Miss Mounts XDWM..E HCAPCWOT - Pct W/Overrun Predominate Throttle XDWM..E HCAPC00K - Pct 0 to 2K Channel Blocks Written XDWM..E HCAPC02K - Pct > 2K to 4K Channel Blocks Written XDWM..E HCAPC04K - Pct > 4K to 8K Channel Blocks Written XDWM..E HCAPC08K - Pct > 8K to 16K Channel Blocks Written XDWM..E HCAPC16K - Pct > 16K to 32K Channel Blocks Written XDWM..E HCAPC32K - Pct > 32K to 64K Channel Blocks Written XDWM..E HCAPC64K - Pct > 64K Channel Blocks Written XDWM..E HCAPSCHM - Virtual Cache-Hit Mounts (per/sec) XDWM..E HCAPSCMM - Virtual Recall Mounts (per/sec) XDWM..E HCAPSCR - Data Read from Cache (uncomp MB/s) XDWM..E HCAPSCW - Data Written to Cache (uncomp MB/s) XDWM..E HCAPSFRM - Virtual Fast-Ready Mounts (per/sec) XDWM..E HCAPSTVM - Total Virtual Mounts (per/sec) XDWM..E HCAPSVDR - Data Read from Cache (comp MB/s) XDWM..E HCAPSVDW - Data Written to Cache (comp MB/s)

Usage Considerations

None.

Retrieval Examples

In the examples, a SAS macro variable is used to specify the DDname part of the
MICS
file name. These macro variables are a standard part of
MICS
and are available for all files. The macro variable name has the form &diiit, where d is the database identifier, iii is the information area name, and t is the timespan. For the examples, a database identifier of P is used. The identifier is installation-dependent, so you should find out what the identifiers are at your installation.
  • Using the most recent DAYS timespan HVTHCA file, display the total megabytes of data written to cache from the attached z/OS hosts, compression ratios, and virtual and physical tape mount counts. Displayed by HOUR by cluster.
        DATA;     SET &pHVTd..HVTHCA01;     DATE=DATEPART(ENDTS) ;     FORMAT DATE DATE8. ;     * ;     PROC PRINT LABEL ;       PAGEBY HVTCLID ;       BY HVTCLID DATE ;     ID HOUR ;     VAR HCACRW HCAVRW HCAAVCWC HCAMXCWC HCATVM HCAFRM HCACHM         HCACMM HCATPM HCADWP ;     TITLE1     'Daily System Activity Summary HOUR' ;     RUN ;