public:faq:how_to-setup_temporary_directory
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public:faq:how_to-setup_temporary_directory [2021/04/19 14:28] ronnie.chan |
public:faq:how_to-setup_temporary_directory [2021/10/15 10:44] (current) support default settings for temporary directory location -- remove syn/qnap per clee |
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| ===== How does CloudBacko use the temporary directory? ===== | ===== How does CloudBacko use the temporary directory? ===== | ||
| - | CloudBacko Pro / Lite / Home make use of the temporary directory for both backup and restore jobs. | + | CloudBacko Pro / Lite / Home makes use of the temporary directory for both backup and restore jobs. |
| + | <WRAP indent> | ||
| + | |||
| + | ==== Backup ==== | ||
| For a backup job, it is used to temporarily store the: | For a backup job, it is used to temporarily store the: | ||
| * Backup set index files, an updated set of index files is generated after each backup. The index files are synchronized to each individual backup destination at the end of each backup job. | * Backup set index files, an updated set of index files is generated after each backup. The index files are synchronized to each individual backup destination at the end of each backup job. | ||
| * File list. | * File list. | ||
| * Incremental/differential delta files generated during backups. | * Incremental/differential delta files generated during backups. | ||
| - | * For some backup sets, e.g. VM or database the actual database files will be spooled to the temporary folder (AhsayOBM makes a copy of the entire database and saves the database files in the temporary directory) in order to achieve a consistent snapshot for backups. | + | * For some backup sets, e.g. VM or database the actual database files will be spooled to the temporary folder (CloudBacko Pro makes a copy of the entire database and saves the database files in the temporary directory) in order to achieve a consistent snapshot for backups. |
| + | ==== Restore ==== | ||
| For a restore job, it is used to temporarily store the: | For a restore job, it is used to temporarily store the: | ||
| * Full and incremental/differential delta files retrieved from the backup destination. | * Full and incremental/differential delta files retrieved from the backup destination. | ||
| * Merging of incremental/differential delta files as part of the restore process. | * Merging of incremental/differential delta files as part of the restore process. | ||
| + | |||
| + | </WRAP> | ||
| ===== Factors that determine the disk space usage or free space required for the temporary directory ===== | ===== Factors that determine the disk space usage or free space required for the temporary directory ===== | ||
| Line 21: | Line 27: | ||
| The following factors need to be taken into account when determining the free space required for the temporary directory drive or partition: | The following factors need to be taken into account when determining the free space required for the temporary directory drive or partition: | ||
| + | <WRAP indent> | ||
| ==== Backup set type ==== | ==== Backup set type ==== | ||
| Line 34: | Line 41: | ||
| When generating incremental or differential delta files, each individual backup destination will require its own individual delta file. Therefore, the disk space required for the drive where your temporary directory is located will increase with each additional backup destination. | When generating incremental or differential delta files, each individual backup destination will require its own individual delta file. Therefore, the disk space required for the drive where your temporary directory is located will increase with each additional backup destination. | ||
| + | </WRAP> | ||
| ===== Is there a quick way to calculate the maximum free space required? ===== | ===== Is there a quick way to calculate the maximum free space required? ===== | ||
| Line 41: | Line 49: | ||
| You can use the following formula to calculate the free space required for the temporary directory depending on the backup set type. | You can use the following formula to calculate the free space required for the temporary directory depending on the backup set type. | ||
| - | ==== For Backup Sets with spooling ==== | + | <WRAP indent> |
| + | ==== Backup Sets with spooling ==== | ||
| ^ Backup Set Type ^ Operating System ^ | ^ Backup Set Type ^ Operating System ^ | ||
| Line 51: | Line 60: | ||
| | MS Windows System Backup* | Windows | | | MS Windows System Backup* | Windows | | ||
| | MS Windows System State* | Windows | | | MS Windows System State* | Windows | | ||
| - | * Both MS Windows System Backup and MS Windows System State the image can be spooled to a separate partition to the Ahsay temporary directory. | + | * Both MS Windows System Backup and MS Windows System State the image can be spooled to a separate partition to the CloudBacko temporary directory. |
| Total File Size Spooled + [(Total File Size * Delta Ratio) * number of backup destinations] = Maximum Free Space Required | Total File Size Spooled + [(Total File Size * Delta Ratio) * number of backup destinations] = Maximum Free Space Required | ||
| - | **Example:** | + | **__Example:__** |
| Backup of 1TB MS SQL Server using ODBC mode with default delta ratio setting of 50% will require up to 1.5TB of free space on the temporary directory location. | Backup of 1TB MS SQL Server using ODBC mode with default delta ratio setting of 50% will require up to 1.5TB of free space on the temporary directory location. | ||
| Line 78: | Line 87: | ||
| *A VMware ESXi/vCenter backup using VDDK mode, the incremental/differential delta files are directly generated by VMware host itself and therefore the temporary directory is not used for this purpose. | *A VMware ESXi/vCenter backup using VDDK mode, the incremental/differential delta files are directly generated by VMware host itself and therefore the temporary directory is not used for this purpose. | ||
| - | **Example:** | + | **__Example:__** |
| Backup of 1TB Hyper-V guest with default delta ratio setting of 50% will require up to 500GB of free space on the temporary directory location. | Backup of 1TB Hyper-V guest with default delta ratio setting of 50% will require up to 500GB of free space on the temporary directory location. | ||
| Line 89: | Line 98: | ||
| (Total File Size * Delta Ratio) * number of backup destinations = Maximum Free Space Required | (Total File Size * Delta Ratio) * number of backup destinations = Maximum Free Space Required | ||
| + | </WRAP> | ||
| <WRAP important> | <WRAP important> | ||
| Line 95: | Line 105: | ||
| ===== What are the default settings for temporary directory location? ===== | ===== What are the default settings for temporary directory location? ===== | ||
| - | The default location is dependent on the O/S platform of the machine where AhsayOBM/AhsayACB is installed. | + | The default location is dependent on the O/S platform of the machine where CloudBacko is installed. |
| ^ Operating System ^ Temporary folder default location ^ | ^ Operating System ^ Temporary folder default location ^ | ||
| Line 101: | Line 111: | ||
| | Linux / FreeBSD | /root/temp | | | Linux / FreeBSD | /root/temp | | ||
| | macOS | /Users/%username%/temp | | | macOS | /Users/%username%/temp | | ||
| - | | Synology DSM | /root/temp | | ||
| - | | QNAP QTS | /root/temp | | ||
| ===== Where should the temporary directory be located? ===== | ===== Where should the temporary directory be located? ===== | ||
| Line 127: | Line 135: | ||
| <WRAP info> | <WRAP info> | ||
| - | In some cases where AhsayOBM/AhsayACB is unexpectedly terminated, e.g. the process is killed in Windows Task Manager or AhsayOBM/AhsayACB crashes during a backup job, before it had an opportunity to delete the temporary files then it is recommended to manually delete the files in the temporary folder. | + | In some cases where CloudBacko is unexpectedly terminated, e.g. the process is killed in Windows Task Manager or CloudBacko crashes during a backup job, before it had an opportunity to delete the temporary files then it is recommended to manually delete the files in the temporary folder. |
| </WRAP> | </WRAP> | ||
| ===== Are there any other factors to take into account? ===== | ===== Are there any other factors to take into account? ===== | ||
| + | |||
| + | <WRAP indent> | ||
| ==== Anti-virus software ==== | ==== Anti-virus software ==== | ||
| Line 138: | Line 148: | ||
| ==== Exclude the Temporary Folder From Backup Source ==== | ==== Exclude the Temporary Folder From Backup Source ==== | ||
| CloudBacko Pro / Lite / Home may lock its own index files as part of the backup job if these files are included in the backup source. So make sure the temporary folder is excluded from the backup source. | CloudBacko Pro / Lite / Home may lock its own index files as part of the backup job if these files are included in the backup source. So make sure the temporary folder is excluded from the backup source. | ||
| + | |||
| + | </WRAP> | ||
public/faq/how_to-setup_temporary_directory.1618813717.txt.gz · Last modified: 2021/04/19 14:28 by ronnie.chan
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