Quotas & Limits

This document contains current API restrictions and usage quotas on use of Storage Transfer Service. This page is updated when there are changes to these restrictions and usage quotas.

Note: Storage Transfer Service supports URL lists with a maximum size of 128 MB. See Creating a URL List.

Concurrent transferOperations limit

The following table describes the limit for concurrent in-progress transferOperations:

Maximum in-progress `transferOperations`	Applies to
200	project

Note: When the number of in-progress transferOperations in a project reaches the limit, new and resumed transferOperations beyond the limit are placed in QUEUED status. As in-progress transferOperations complete, any QUEUED transferOperations are moved to IN_PROGRESS status.

Rate quotas

Storage Transfer Service enforces rate quotas on all requests made. These quotas apply on a per-project basis; requests made through Google Cloud CLI, Google Cloud console, and Cloud Client Libraries also count towards these rate quotas.

This table provides the metric, API methods, and default limits for each quota:

Metric	API methods	Default limits
storagetransfer.googleapis.com/create_requests	projects.agentPools.create transferJobs.create	600 requests/min/project 5000 requests/day/project
storagetransfer.googleapis.com/read_requests	googleServiceAccounts.get projects.agentPools.get projects.agentPools.list transferJobs.get transferJobs.list transferOperations.get transferOperations.list	1500 requests/min/project
storagetransfer.googleapis.com/update_requests	projects.agentPools.patch transferJobs.patch	600 requests/min/project
storagetransfer.googleapis.com/delete_requests	projects.agentPools.delete transferJobs.delete	600 requests/min/project
storagetransfer.googleapis.com/operation_requests	transferOperations.cancel transferOperations.pause transferOperations.resume	900 requests/min/project

Adjusting quotas

For information on adjusting quotas, see Managing your quota.