Calculation of the size of the 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 of the operating system.

Send and Receive Management File

Use the following formula to calculate the data size (unit: byte) of the Send and Receive Management 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 1.6 Substituted Values in Size Calculation for Send and Receive Management 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 24 bytes)} x e2
			e1	Number of items 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

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

(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 1.7 Substituted Value in Calculation for Host Information File
	Substituted Value	Space for Entering Substituted Value
g	Total number of host names to be registered

Send and Receive Log File

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

The following table shows the calculations for the substituted values:

Table 1.8 Substituted Values in Size Calculation for Send and Receive Log File
	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 Request Observe processing, refer to the explanation about the Observe definition settings in Administration Manual.

Send Control File

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

(7600 bytes x n) x 2

The following table shows the substituted value:

Table 1.9 Substituted Value in Calculation for Send Control File
	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 (unit: byte) of the System Control file:

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

The following table shows the substituted value:

Table 1.10 Substituted Value in Calculation for System Control File
	Substituted Value	Space for Entering Substituted Value
n	Value of Send Startup Task Count (TASK-CNT) in the System Environment Settings

Command Execution Log Files

Use the following formula to calculate the size (unit: cylinders) of the Command Execution Log files:

(p x q + 1) / 18 / 15

The following table shows the substituted value:

Table 1.11 Substituted Value in Calculation for Command Execution Log Files
	Substituted Value	Space for Entering Substituted Value
p	Estimated average number of command execution log records output per day
q	Cumulative number of days

= Remarks =

Use this calculation formula to calculate the size of both Command Execution Log file 1 (HULFT.OPLCMD1) and Command Execution Log file 2 (HULFT.OPLCMD2).

File Access Log Files

Use the following formula to calculate the size (unit: cylinders) of the File Access Log files:

(r x s + 1) / 18 / 15

The following table shows the substituted value:

Table 1.12 Substituted Value in Calculation for File Access Log Files
	Substituted Value	Space for Entering Substituted Value
r	Estimated average number of file access log records output per day
s	Cumulative number of days

= Remarks =

Use this calculation formula to calculate the size of both File Access Log file 1 (HULFT.OPLFILE1) and File Access Log file 2 (HULFT.OPLFILE2).