RAM Requirements for Backup of Large Number of Files

Amount of RAM used by Veeam Agent to process backed-up files depends on the number of files included in the backup, the length of file names and depth of the directory structure. For large environments with great number of backed-up files, consider the following RAM sizing recommendations:

For large number of backed-up files with short names (7 characters) under a single-level root directory

Number of Backed-Up Files, Full / Incremental Backup	RAM (GB)
1,000,000 Full	1.6
1,000,000 Incremental + 100,000	2.1
2,000,000 Full	2.0
2,000,000 Incremental + 100,000	3.5
5,000,000 Full	4.4
5,000,000 Incremental + 100,000	7.2
10,000,000 Full	7.3
10,000,000 Incremental + 100,000	13.6

For large number of backed-up files with long names (254 characters) under a single-level root directory

Number of Backed-Up Files, Full / Incremental Backup	RAM (GB)
1,000,000 Full	2.8
1,000,000 Incremental + 100,000	4.6
2,000,000 Full	4.6
2,000,000 Incremental + 100,000	8.2
5,000,000 Full	10.0
5,000,000 Incremental + 100,000	19.2
10,000,000 Full	19.0
10,000,000 Incremental + 100,000	36.7

For large number of backed-up files with short names (7 characters) in a 7-level directory structure

Number of Backed-Up Files, Full / Incremental Backup	RAM (GB)
1,000,000 Full	2.3
1,000,000 Incremental + 100,000	2.7
2,000,000 Full	2.7
2,000,000 Incremental + 100,000	3.4
5,000,000 Full	3.9
5,000,000 Incremental + 100,000	5.3
10,000,000 Full	5.8
10,000,000 Incremental + 100,000	8.5

For large number of backed-up files with long names (254 characters) in a 7-level directory structure

Number of Backed-Up Files, Full / Incremental Backup	RAM (GB)
1,000,000 Full	2.8
1,000,000 Incremental + 100,000	3.5
2,000,000 Full	3.7
2,000,000 Incremental + 100,000	4.9
5,000,000 Full	6.4
5,000,000 Incremental + 100,000	9.3
10,000,000 Full	11.1
10,000,000 Incremental + 100,000	16.2