# Backup options ```yaml backup: priority: "localhost:28019": 2.5 "localhost:27018": 2.5 "localhost:27020": 2.0 "localhost:27017": 0.1 compression: compressionLevel: timeouts: startingStatus: 60 ``` ### priority *Type*: array of strings The list of `mongod` nodes and their priority for making backups. The node with the highest priority is elected for making a backup. If several nodes have the same priority, the one among them is randomly elected to make a backup. If not set, the replica set nodes have the default priority as follows: * hidden nodes - 2.0 * secondary nodes - 1.0 * primary node - 0.5 ### backup.compression *Type*: string
*Default*: s2 The compression method for backup snapshots. Available in Percona Backup for MongoDB as of version 1.8.0. When `none` is specified, backups are made without compression. Supported values: `gzip`, `snappy`, `lz4`, `s2`, `pgzip`, `zstd`. Default: `s2`. ### backup.compressionLevel *Type*: int The compression level. The default value depends on the compression method used. The following table shows available compression levels per compression method: | Compression method | Supported compression levels | Default | ------------------ | ---------------------------- | ---------- | `zstd` | 1 - fastest speed, 2 - default, 3 - better compression, 4 - best compression | 2 | `snappy` | no levels| | `lz4` | From 1 (fastest) to 16 | 1 | `gzip` and `pgzip` | -1 - default compression, 0 - no compression, 1 - best speed, 9 - best compression| -1 Note that the greater value you specify, the more time and computing resources it will take to compress the data. ### backup.timeouts.startingStatus *Type*: unit32
*Default*: 33 The wait time (in seconds) for PBM to start physical backups on all shards. Increasing this value is useful when it takes longer than usual to open the `$backupCursor`. The 0 (zero) value resets the timeout to the default 33 seconds.