Job Results Directory Disk Space Calculation
The disk space required for the job results directory depends on the number of files to be backed up or restored and also the average size of a file.
Disk Space Calculation Formulas
Backup JobsSubclient_Dir_Size = 6 × System_Files_Count × System_Average_Filename_Size
Restore JobsRestore_Job_Size = 1.5 × Restore_Files_Count × Average_Filename_Size
Snap JobsSnapCopy_Job_Size = 7 × SubClient_Files_Count × SubClient_Average_Filename_Size
Deduplication
Local_cache_deduplicated_data = The value in the Limit the Max Cache size to box on the client Deduplication tab. The default size is 4096 MB. For information on the cache size setting, see Deduplication - Advanced Client Properties.
Disk Space Required for the JobResults Directory
JobResults_directory_disk_space = Subclient_Dir_Size + (Restore_Job_Size × number_of_restore_results_kept_for_a_longer_time) + (SnapCopy_Job_Size × number_of_Snap_Copy_jobs_run_in_parallel) + Local_cache_deduplicated_data
In addition, the disk space requirements of any other components that are used, such as optimized scan cache, must be added to the final number.
Examples
| Environment 1 | Environment 2 |
|---|---|
| Number of files = 25 million Average filename size = 15 characters Space Required for Backup Job 6 × 25,000,000 × 14 = 2.5 GB Space Required for Restore Job1.5 × 25,000,000 × 15 = 560 MB Disk Space Required for the JobResults DirectoryNumber of restore results kept for a longer time = 1 JobResults_directory_disk_space = 2.5 + (560 × 1) = 3.5 GB (approximately) |
Number of files = 25 million Average filename size = 15 characters Space Required for Backup Job6 × 25,000,000 × 14 = 2.5 GB Space Required for Restore Job1.5 × 25,000,000 × 15 = 560 MB Space Required for Snap Job7 × 25,000,000 × 15 = 2.7 GB (approximately) Disk Space Required for the JobResults DirectoryNumber of restore results kept for a longer time = 1 Number of snap copy jobs run in parallel = 1 JobResults_directory_disk_space = 2.5 + (560 × 1) + (2.7 × 1) = 6.2 GB (approximately) |
What to Do Next
Some agents and components require additional disk space. To review these disk space requirements, see Agents and Components Requiring Additional Disk Space.