The second field in each record is a 4-digit record type identifier. It is used by Control Center to interpret the remaining fields in the record. The record type of the first data record of a segment is 5001 for z/VM data or 7001 for Velocity Software data.
The ‘0’ records
The first few records in an output file carries a copy of the run-time options used by Acquire. These are ignored by Control Center but are useful for diagnostic purposes.
The 5001/7001 records
Record 5001 or 7001 carries the Acquire program release and version level, and the date and time at which the Acquire run was executed, plus the target number to be cross-checked by Control Center when the data is to be added to a Capacity Database.
Record 5002 or 7002 holds the start and end date and time of the measurement interval, plus the system name and machine type. The system name here must match what is defined in your database or else all the data will be rejected. The penultimate field is the duration of the interval in seconds.
Record 5003 or 7003 holds details of CPU usage by the z/VM system by CP, zAAP, zIIP and IFL.
Record 5004 or 7004 holds scheduler queue metrics.
The 5101 or 7101 record
This record provide overview details of numbers of user and system-wide metrics like VMCF and IUCV
The 5201 or 7201 record
This record carries details of real device activity.
The 54nn or 74nn records
The 54nn/74nn records carry details of memory usage and paging, including XSTORE.
The 55nn or 75nn records
There could be many groups of records numbered 5501-5503 or 7501-7503. Each group represents activity of a particular guest user or WORKLOAD (as defined in Acquire parameters or in Velocity Software’s product)
The 60nn / 80nn records
These records identify the activity in the various Logical Partitions (LPARs) defined on the configuration. The 6001/8001 record identifies the partition from which data was captured. Sets of 6002–6006 or 8002-8006 records give details of all known logical partitions, including their name, the number of logical processors, and their dispatch times by type of processor (CP, zAAP zIIP, IFL, ICF). This categorization relies on the presence of a z9 processor or later with an appropriate level of microcode. Without this in place, z/VM can only identify processor types as “CP” or “ICF”
The 9999 record
The 9999 record is the trailer record that identifies the end of each segment within the file. It must always be present as the last record for a segment. The format is always:
nnnnn,9999