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# POST persistence/clusters/<clus_name>

This web method sends a command to a specific persistence cluster.

`<clus_name>` in the URI is the cluster name.

## Input Data

Supply the command in JSON format. For example, `{"cmd":"suspend"}`

## Commands

Command | Description
--- | ---
`{"cmd":"backupdisk"}` | Back up the disk(s). When disk persistence is enabled, this command backs up the files associated with disk persistence. See also Saving and Loading Persistence State.
{"cmd":"compactdisk"} | All members of the persistence cluster will start a compaction. See Compact Disk Persistence Files with Persistence Service Online.
`{"cmd":"forceformation"}` | Force the cluster to form a quorum immediately with available servers, without waiting for all servers to become available or waiting for the `force_quorum_delay` period to elapse.
`{"cmd":"suspend"}` | See Suspending a Persistence Cluster.

## Example Requests

    curl -X POST http://<host>:<port>/api/v1/persistence/clusters/<clus_name> -d <json_cmd>

Note: You cannot suspend the internal cluster `ftl.default.cluster`.

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TIBCO FTL® - Enterprise Edition

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