Nonstop Database, HiRDB Version 9 Installation and Design Guide

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19.2.9 Memory size required for the execution of the database copy utility (pdcopy)

The following tables show the formulas for determining the memory size required for the execution of the database copy utility (pdcopy).

Organization of this subsection
(1) HiRDB single server configuration
(2) HiRDB parallel server configuration

(1) HiRDB single server configuration

Condition Formula for determining memory size (KB)
Single server 88 + number of backup files [Figure] 2 [Figure] MAX(32, value of pd_utl_buff_size)
+ number of backup files [Figure] {(number of RDAREAs subject to backup + 9) [Figure] 10} [Figure] 6
+ {(total number of RDAREA component files subject to backup + 25) [Figure] 16} [Figure] 8 + 100
+ 49 + number of backup files [Figure] 2 [Figure] MAX(32, value of pd_utl_buff_size) + 64
+ number of backup files [Figure]{(number of RDAREAs subject to backup + 9) [Figure] 10} [Figure] 6
+ {(total number of RDAREA component files subject to backup + 25) [Figure] 16} [Figure] 8 + 100

Add the following value if this server machine contains backup files:
+ 63 + number of backup files [Figure] (2 [Figure] MAX(32, value of pd_utl_buff_size) [Figure] 2
+ number of backup files [Figure] {(number of RDAREAs subject to backup + 9) [Figure] 10} [Figure] 6
+ {(total number of RDAREA component files subject to backup + 25) [Figure] 16} [Figure] 8 + 100 + 1,024

Add the following value if differential backup files are to be collected:
+ 32 [Figure] 2 + [Figure](512 + 128 [Figure] number of RDAREAs subject to backup) [Figure] 32,768[Figure] [Figure] 32
+ [Figure](256 + 128 [Figure] number of RDAREAs subject to backup + a + 8 [Figure] b) [Figure] 32,768[Figure] [Figure] 32 [Figure] 2
Utility special unit 63 + number of backup files [Figure] (2 [Figure] MAX(32, value of pd_utl_buff_size) [Figure] 2
+ number of backup files [Figure] {(number of RDAREAs subject to backup + 9) [Figure] 10} [Figure] 6
+ {(total number of RDAREA component files subject to backup + 25) [Figure] 16} [Figure] 8 + 100 + 1,024

a: Length of the backup file name specified in the -b option (bytes). If multiple backup files are specified, this value is the total length of the file names.

b: Number of backup files specified in the -b option

(2) HiRDB parallel server configuration

Condition Formula for determining memory size (KB)
MGR 88 + number of backup files [Figure] 2 [Figure] MAX(32, value of pd_utl_buff_size)
+ number of backup files [Figure] {(number of RDAREAs subject to backup + 9) [Figure] 10} [Figure] 6
+ {(total number of RDAREA component files subject to backup + 25) [Figure] 16} [Figure] 8 + 100

Add the following value if differential backup files are to be collected:
+ 32 [Figure] 2 + [Figure](512 + 128 [Figure] number of RDAREAs subject to backup) [Figure] 32,768[Figure] [Figure] 32
+ [Figure](256 + 128 [Figure] number of RDAREAs subject to backup + a + 8 [Figure] b) [Figure] 32,768[Figure] [Figure] 32 [Figure] 2
DS 49 + number of backup files [Figure] 2 [Figure] MAX(32, value of pd_utl_buff_size) + 64
+ number of backup files [Figure]{(number of RDAREAs subject to backup + 9) [Figure] 10} [Figure] 6
+ {(total number of RDAREA component files subject to backup + 25) [Figure] 16} [Figure] 8 + 100
BES
Server machine containing backup files 63 + number of backup files [Figure] 2 [Figure] MAX(32, value of pd_utl_buff_size)
[Figure] (number of servers subject to backup + 1)
+ number of backup files [Figure] {(number of RDAREAs subject to backup + 9) [Figure] 10} [Figure] 6
+ {(total number of RDAREA component files subject to backup + 25) [Figure] 16} [Figure] 8 + 100 + 1,024

a: Length of the backup file name specified in the -b option (bytes). If multiple backup files are specified, this value is the total length of the file names.

b: Number of backup files specified in the -b option

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