The following table lists the disk capacity requirements for a host.
Directory |
Disk capacity requirements |
|---|---|
/tmp |
570 KB |
/var |
p MB#1 + q MB#2 + 4 MB#3 + u MB#4 + v MB#5+ x MB#9 + 65 MB (220 MB#6) |
/opt |
598 MB |
/etc |
y MB#7 + z MB#8 + 5.5 MB (10 MB#6) |
/root |
580 KB |
/sbin |
500 KB |
/boot |
20 MB |
- #1
This size differs depending on the settings for log files (maximum size: 30 GB).
p is obtained by the following formula:
p = (s x m) / 1024 [MB]
Where s is the error log file size (unit: KB, default value: 9900) and m is the number of error log files (default value: 2). The result is rounded up to MB.
- #2
This size differs depending on the settings for trace files (maximum size: 1000 MB).
q is obtained by using the following formula:
q = (t x n) / 1024 [MB]
Where t is the trace file size (unit: KB, default value: 9900) and n is the number of trace files (default value: 4). The result is rounded up to MB.
- #4
The size of the log file for inquiry information.
u is obtained by using the following formula:
u = (2500 bytes x number-of-paths) / 1024 / 1024 [MB]
The result is rounded up to MB.
- #5
-
The size of the log files for the dlmcfgmgr utility.
This size differs depending on the settings for the size of the log files for the dlmcfgmgr utility (maximum size: 1954 MB (approximately 2 GB)).
v is obtained by using the following formula:
v = (w x 2) / 1024 [MB]
Where w is the size of the log files for the dlmcfgmgr utility (unit: KB, default value: 1024).
The result is rounded up to MB.
- #6
-
This is an approximate value when the default values are used for the HDLM functions and when the number of paths is 256.
For details on the values of the HDLM functions, see Table 1.
- #7
-
The size of the configuration definition file.
y is obtained by using the following formula:
y = (2500 bytes x number-of-paths x 4) / 1024 / 1024 [MB]
The result is rounded up to MB.
- #8
-
The size of the file that defines non-HDLM-managed disks.
z is obtained by using the following formula:
z = (20 bytes x number-of-non-HDLM-managed-disks x 4) / 1024 / 1024 [MB]
The result is rounded up to MB.
- #9
-
The total size of the files to be backed up by using the utility for creating an HDLM boot disk environment (dlmbootstart)
x is calculated as the total of the sizes of the following files.
The file sizes depend on the user environment, so check the file sizes in your environment.
-
/etc/fstab
-
/etc/lvm/lvm.conf
-
Boot loader configuration file
-
Initial RAM disk image file
-