The format of the Class F SET command is: SET I RECord {OFF ,.., } II: ON raddr LIMIT nn BYTE nn BIT n I{AND} BYTE nn BIT nl I OR I L .J KODE {
RETRY} {Quiet } [cpuid] !tAIN Record I I I RECORD MODE cpuid
Responses
sets the recording mode for a device. ON allows the class F
user to specify intensive recording mode for the device raddr. LIKIT identifies the value at which a recording will be made, and the BYTE and BIT operands define the test condition in the
sense bytes. Two bits may be tested by an AND or OR relationship. The OFF function turns off intensive recording
mode. Only one device at a time may have intensive recording
specified. If SET RECORD OFF is not entered, intensive
recording is automatically terminated after the accumulation
of ten error records for that device.
sets error recording mode for soft errors. Soft errors are recoverable processor storage or instruction errors
corrected by hardware or software logic. KODE RETRY QUIET turns off error recording for soft machine check errors successfully corrected by instruction MODE RETRY RECORD resets the error threshold count to zero and
records soft aachine check errors (up to the threshold of 12),
successfully corrected by instruction retry, on the error
recording cylinder. !tODE KAIN QUIET turns off error recording for single bit aain storage errors, successfully corrected by Error Correction
Code logic. KODE KAIN RECORD resets the error threshold count to zero and
records up to 12 successfully corrected main storage errors on
the error recording cylinder before entering KAIN QUIET aode. !2!g: SET KODE KAII is invalid for 3031, 3032, and 3033 processors.
in attached processor mode, indicates the address of the
processor for which the command is executed. If no address is
specified, the command is processed for both Frocessors. If a
value is specified, it aust be in agreement with the processor
designated identity specified at the time of the installation
of the processor complex. Valid hexadecimal values are 00 to
3F.
There are no responses to the SET command. However, when the coaaand is
invoked, information messages related to the use of specific SET operands are displayed. These messages are described in the •. Section 3. CP Coamands 143

SHUTDOWN Use the SHUTDOWN command to systematically end all VM/370 functions and
to cbeckpoint the system for an ¥ara start. This is the nor.al method to shut the system down. All VM/370 functions are suspended and communications lines are disabled. Use the NETWORK SHUTDOWN command to
stop communications on 370x or remote 3270 binary synchronous lines.
The format of the SHUTDOWN command is: SHUTDOWN I This command has no operands. 1. Because the SHUTDOWN command stops all virtual machine operation,
any knowledge of an impending shutdown situation on the part of the system operator should be conveyed to the virtual machine users as
soon as possible via appropriate LOGMSG information, aessages and
warnings so they may quiesce their virtual systems in an orderly manner. 2. In VM/370 installations that use the 3850 Mass Storage System, the V8/370 shutdown process issues a SUSPEND order to all 3851 devices
to suspend the MSC interface. Note, the SUSPEND order may cause
the shutdown process to take longer than usual as it causes the
destaging of data on 3330V volumes. SYSTEM SHUTDOWN COMPLETE 144 VM/370 Operator's Guide