Restore options¶

restore:
  batchSize: <int>
  numInsertionWorkers: <int>
  numParallelCollections: <int>
  numDownloadWorkers: <int>
  maxDownloadBufferMb: <int>
  downloadChunkMb: <int>
  mongodLocation: <string>
  mongodLocationMap:
     "node01:2017": <string>
     "node03:27017": <string>

restore.batchSize¶

Type: int
Default: 500

The number of documents to buffer.

restore.numInsertionWorkers¶

Type: int
Default: 10

Specifies the number of insertion workers to run concurrently per collection.

restore.numParallelCollections¶

Type: int
Default: number of CPU cores / 2

The number of collections to process in parallel during a logical restore. The default value is half of the number of CPU cores. By setting the value for this option you define the new default. Available starting with version 2.7.0.

restore.numDownloadWorkers¶

Type: int
Default: number of CPU cores

The number of workers that request data chunks from the storage during the restore. The default value equals to the number of CPU cores.

restore.maxDownloadBufferMb¶

Type: int

The maximum size of the in-memory buffer that is used to download files from the S3 storage. When unspecified or set to 0, the size cannot exceed the value calculated as numDownloadWorkers * downloadChunkMb * 16 MB. By default, the number of CPU cores * 32 * 16 MB.

restore.downloadChunkMb¶

Type: int
Default: 32

The size of the data chunk in MB to download from the S3 storage.

restore.mongodLocation¶

Type: string

The custom path to mongod binaries. When undefined, Percona Backup for MongoDB uses the default path to make database restarts during physical restore.

restore.mongodLocationMap¶

Type: array of strings

The list of custom paths to mongod binaries on every node. Percona Backup for MongoDB uses the values to make restarts of the database during physical restore.

Last update: July 16, 2025
Created: July 16, 2025