diff --git a/services/storage-users/pkg/config/config.go b/services/storage-users/pkg/config/config.go
index ff995e1158..7180351e4a 100644
--- a/services/storage-users/pkg/config/config.go
+++ b/services/storage-users/pkg/config/config.go
@@ -24,7 +24,7 @@ type Config struct {
 	SkipUserGroupsInToken   bool `yaml:"skip_user_groups_in_token" env:"STORAGE_USERS_SKIP_USER_GROUPS_IN_TOKEN" desc:"Disables the loading of user's group memberships from the reva access token." introductionVersion:"1.0.0"`
 	GracefulShutdownTimeout int  `yaml:"graceful_shutdown_timeout" env:"STORAGE_USERS_GRACEFUL_SHUTDOWN_TIMEOUT" desc:"The number of seconds to wait for the 'storage-users' service to shutdown cleanly before exiting with an error that gets logged. Note: This setting is only applicable when running the 'storage-users' service as a standalone service. See the text description for more details." introductionVersion:"1.0.0"`
 
-	Driver         string  `yaml:"driver" env:"STORAGE_USERS_DRIVER" desc:"The storage driver which should be used by the service. Defaults to 'decomposed', Supported values are: 'decomposed', 'decomposeds3' and 'owncloudsql'. For backwards compatibility reasons it's also possible to use the 'ocis' and 's3ng' driver and configure them using the 'decomposed'/'decomposeds3' options. The 'decomposed' driver stores all data (blob and meta data) in an POSIX compliant volume. The 'decomposeds3' driver stores metadata in a POSIX compliant volume and uploads blobs to the s3 bucket." introductionVersion:"1.0.0"`
+	Driver         string  `yaml:"driver" env:"STORAGE_USERS_DRIVER" desc:"The storage driver which should be used by the service. Defaults to 'posix'. Supported values are: 'posix', 'decomposed', 'decomposeds3' and 'owncloudsql'. For backwards compatibility reasons it's also possible to use the 'ocis' and 's3ng' driver and configure them using the 'decomposed'/'decomposeds3' options. The 'posix' driver stores data directly on a POSIX-compliant filesystem. The 'decomposed' driver stores all data (blob and meta data) in a POSIX compliant volume. The 'decomposeds3' driver stores metadata in a POSIX compliant volume and uploads blobs to the s3 bucket." introductionVersion:"1.0.0"`
 	Drivers        Drivers `yaml:"drivers"`
 	DataServerURL  string  `yaml:"data_server_url" env:"STORAGE_USERS_DATA_SERVER_URL" desc:"URL of the data server, needs to be reachable by the data gateway provided by the frontend service or the user if directly exposed." introductionVersion:"1.0.0"`
 	DataGatewayURL string  `yaml:"data_gateway_url" env:"STORAGE_USERS_DATA_GATEWAY_URL" desc:"URL of the data gateway server" introductionVersion:"1.0.0"`