System file formats

The following table shows the types and formats of system files:

Table 3.16 Types and Formats of System Files
System File		Cluster Type	DD Name	Organization	Key Length	Relative Position of Key	Record Length	Share Option
Send and Receive Management File (HULFT.FILE)		Base cluster	XRFILE	VSAM KSDS	54	0	Average: 610 Maximum: 22300	4, 3
Host Information File (HULFT.HOST)		Base cluster	XRHOST	VSAM KSDS	51	0	Average: 500 Maximum: 500	4, 3
Send and Receive Log File (HULFT.LOG)
	Send and Receive Log File ID Key File (HULFT.LOG)	Base cluster	XRLOG	VSAM KSDS	59	0	Average: 4000 Maximum: 4000	4, 3
	Send and Receive Log Host Name Key File (HULFT.LOG.PATH1)	Base cluster	XRLOG1	VSAM KSDS	59	59	Average: 4000 Maximum: 4000	4, 3
	Send and Receive Log Date Key File (HULFT.LOG.PATH2)	Base cluster	XRLOG2	VSAM KSDS	9	118	Average: 4000 Maximum: 4000	4, 3
Send Control File (HULFT.QUEUE)		Base cluster	XRQUE	VSAM KSDS	61	0	Average: 7600 Maximum: 7600	4, 3
System Control file		Base cluster	XRCNTL	VSAM KSDS	52	0	Average: 400 Maximum: 400	4, 3

Note

For more efficient use of capacity, it is recommended that you specify the values shown below for CONTROLINTERVALSIZE of the Send and Receive Log file, the send control file, and the System Control file.

Send and Receive Log file (HULFT.LOG):: 26624 bytes
Send Control file (HULFT.QUEUE):: 26624 bytes
System Control file:: 18432 bytes

CONTROLINTERVALSIZE of the Send and Receive Log file (HULFT.LOG) and the Host Information file (HULFT.HOST) are automatically set by the operating system.

Calculation of Size of VSAM File

The following explains how to calculate the size of the data used by HULFT within each VSAM file:

Note

The calculations shown here are only for estimation. Calculated sizes and the actual sizes may differ depending on the system environment in use.
The calculations shown here do not include the size of the INDEX components of VSAM files. When you calculate the size of the VSAM file, refer to the manual for the operating system.

Send and Receive Management File (HULFT.FILE)

Use the following formula to calculate the data size (unit: byte) of the Send and Receive Management file (HULFT.FILE):

(a + b + c + d + e + f) x 2

Data size calculation takes into account the occurrence of CI (Control-Interval) splits.

The following table shows the calculations for the substituted values:

Table 3.17 Substituted Values in Size Calculation for Send and Receive Management File (HULFT.FILE)
	Data Size (Bytes)	Calculation and Substituted Value
a	Send information length	700 bytes x a1
a	Send information length		a1	Total number of Send file IDs to be registered
b	Receive information length	600 bytes x b1
b	Receive information length		b1	Total number of Receive file IDs to be registered
c	Job execution information length	{300 bytes + (c1 x 8 bytes)} x c2
			c1	Number of members to be registered for one job ID
			c2	Total number of job IDs to be registered
d	Transfer Group Information length	{300 bytes + (d1 x 50 bytes)} x d2
			d1	Number of hosts to be registered for one transfer group ID
			d2	Total number of transfer group IDs to be registered
e	Format Information length	{300 bytes + (e1 x 16 bytes)} x e2
			e1	Number of fields to be registered for one format ID
			e2	Total number of format IDs to be registered
f	Multi Format Information length	{300 bytes + (f1 x 70 bytes)} x f2
			f1	Number of format IDs to be registered for one multi format ID
			f2	Total number of multi format IDs to be registered

Host Information File (HULFT.HOST)

Use the following formula to calculate the data size (unit: byte) of the Host Information file (HULFT.HOST):

(500 bytes x g) x 2

Data size calculation takes into account the occurrence of CI splits.

The following table shows the substituted value:

Table 3.18 Substituted Value in Calculation for Host Information File (HULFT.HOST)
	Substituted Value	Space for Entering Substituted Value
g	Total number of host names to be registered

Send and Receive Log File (HULFT.LOG)

Use the following formula to calculate the data size (unit: byte) of the Send and Receive Log file (HULFT.LOG) base cluster:

{(h + i + j + k) x m} x 2

For host types that do not reuse CIs, use the Send and Receive Log File Reorganization program (XRREORG) to reorganize the Send and Receive Log file (HULFT.LOG) regularly.

The following table shows the calculations for the substituted values:

Table 3.19 Substituted Values in Size Calculation for Send and Receive Log File (HULFT.LOG)
	Calculation and Substituted Value
h	3792 bytes x h1
h		h1	Estimated average number per day of the Send processing actions carried out during operation
i	3592 bytes x i1
i		i1	Estimated average number per day of the Receive processing actions carried out during operation
j	393 bytes x j1
j		j1	Estimated average number per day of Post-send Jobs and Post-receive Jobs carried out during operation
k	526 bytes x k1
k		k1	Estimated average number per day of the Observe processing actions carried out during operation (*1)
m	Cumulative number of days

For details about the Observe processing, refer to Observe definition settings.

Send Control File (HULFT.QUEUE)

Use the following formula to calculate the data size (unit: byte) of the Send Control file (HULFT.QUEUE):

(7600 bytes x n) x 2

The following table shows the substituted value:

Table 3.20 Substituted Value in Calculation for Send Control File (HULFT.QUEUE)
	Substituted Value	Space for Entering Substituted Value
n	Estimated average number per day of the Send processing actions carried out during operation

System Control file

Use the following formula to calculate the data size (units: bytes) of the System Control file:

{2400 bytes + (400 bytes x n)} x 2

The following table shows the substituted value:

Table 3.21 Substituted value in calculation for System Control file
	Substituted Value	Space for Entering Substituted Value
n	Setting values for Send Startup Task Count (TASK-CNT) in the System Environment Settings