4.2.3 Essential Resources

The following table lists the amount of disk space required for each directory when this software is installed for the first time. The file system may require to be reconfigured if there is insufficient free space.

Table 4.5 Disk space requirement at installation
No.	Directory	Disk space requirements (Unit: megabytes)				Remarks
No.	Directory	Solaris	Linux	HP-UX	AIX	Remarks
1	/$DIR1	130	120	120	200
2	/$DIR2	0.2	0.2	0.2	0.2
3	/$DIR3	2.2	2.2	2.2	2.2
4	/opt	0.2	0.2	0.2	0.2

"$DIR1" is the program directory name to be specified when you install this software product.
"$DIR2" is the environment setup directory name to be specified when you install this software product.
"$DIR3" is the variable data storage directory name to be specified when you install this software product.

For Solaris, refer to theTable 4.9 Installation directory (Default value) of an install directory for specification of a directory name.

For Linux, refer to the Table 4.10 Installation directory (Default value) of an install directory for specification of a directory name.

For HP-UX, refer to the Table 4.11 Installation directory (Default value) of an install directory for specification of a directory name.

For AIX, refer to the Table 4.12 Installation directory (Default value) of an install directory for specification of a directory name.

4.2.3.2 Dynamic Disk Resources

The table below lists disk space requirements required for different uses of the product. These requirements are in addition to the disk space requirements described in "4.2.3.1 Static Disk Resources".

Table 4.6 Disk space requirement during operation
No.	Directory	Disk space requirement (Unit: megabytes)				Operation
No.	Directory	Solaris	Linux	HP-UX	AIX	Operation
1	/$DIR2	(a+35 x b)/1024	(a+35 x b)/1024	(a+35 x b)/1024	(a+35 x b)/1024	For Backup Management
2	/$DIR2	(1.1 x c)/1024	(1.1 x c)/1024	(1.1 x c)/1024	(1.1 x c)/1024	For Replication Management
3	/$DIR2	0.1	0.1	0.1	0.1	Mandatory.
4	/$DIR3	7	7	5	5	Mandatory.
5	/var	13	13	13	13	Mandatory.

"$DIR2" is the program directory name to be specified when you install this software product.
"$DIR3" is the program directory name to be specified when you install this software product.
a: Number of backup volumes
b: Number of transaction volumes
c: Number of volume pairs for replication management

Note

When Tape Server is configured on the Storage server, also estimate the dynamic resources used by Tape Server. For details, see "7.3.2 Dynamic Disk Resources".

4.2.3.3 Memory Requirements

To operate this software product, the amount of memory listed in the following table is required.

Table 4.7 Amount of memory required during operation
No.	Memory requirement (Unit: megabytes)				Operation
No.	Solaris	Linux	HP-UX	AIX	Operation
1	29	29	13	13	Does not exist.
2	10	10	10	10	Executing a 1-slice backup command in 16 slices of transaction volume and 60 slices of backup volume

4.2.3.4 Swap Space Requirements

To operate this software product, the swap space listed in the following table is required. If the requirements exceed the provided swap area, expand it.

Table 4.8 Swap space requirement during operation
No.	Swap area (Unit: megabytes)				Operation
No.	Solaris	Linux	HP-UX	AIX	Operation
1	11.2	11.2	3.2	3.2	Does not exist.
2	11	11	11	11	Executing a 1-slice backup command in 16 slices of transaction volume and 60 slices of backup volume