Request Syntax Request Parameters Response Syntax Response Elements Errors Examples See Also

AddCache

Configures one or more gateway local disks as cache for a gateway. This operation is only supported in the cached volume, tape, and file gateway type (see How Storage Gateway works (architecture).

In the request, you specify the gateway Amazon Resource Name (ARN) to which you want to add cache, and one or more disk IDs that you want to configure as cache.

Request Syntax


{
   "DiskIds": [ "string" ],
   "GatewayARN": "string"
}

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

DiskIds

An array of strings that identify disks that are to be configured as working storage. Each string has a minimum length of 1 and maximum length of 300. You can get the disk IDs from the ListLocalDisks API.

Type: Array of strings

Length Constraints: Minimum length of 1. Maximum length of 300.

Required: Yes

GatewayARN

The Amazon Resource Name (ARN) of the gateway. Use the ListGateways operation to return a list of gateways for your account and AWS Region.

Type: String

Length Constraints: Minimum length of 50. Maximum length of 500.

Required: Yes

Response Syntax


{
   "GatewayARN": "string"
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

GatewayARN

The Amazon Resource Name (ARN) of the gateway. Use the ListGateways operation to return a list of gateways for your account and AWS Region.

Type: String

Length Constraints: Minimum length of 50. Maximum length of 500.

Errors

For information about the errors that are common to all actions, see Common Errors.

InternalServerError

An internal server error has occurred during the request. For more information, see the error and message fields.

HTTP Status Code: 400

InvalidGatewayRequestException

An exception occurred because an invalid gateway request was issued to the service. For more information, see the error and message fields.

HTTP Status Code: 400

Examples

Example request

The following example shows a request that activates a stored volumes gateway.

Sample Request


POST / HTTP/1.1
Host: storagegateway.us-east-2.amazonaws.com
Content-Type: application/x-amz-json-1.1
Authorization: AWS4-HMAC-SHA256 Credential=AKIAIOSFODNN7EXAMPLE/20120425/us-east-2/storagegateway/aws4_request, SignedHeaders=content-type;host;x-amz-date;x-amz-target, Signature=9cd5a3584d1d67d57e61f120f35102d6b3649066abdd4bf4bbcf05bd9f2f8fe2
x-amz-date: 20120425T120000Z
x-amz-target: StorageGateway_20130630.AddCache

{
    "GatewayARN": "arn:aws:storagegateway:us-east-2:111122223333:gateway/sgw-12A3456B",
    "DiskIds": [
        "pci-0000:03:00.0-scsi-0:0:0:0",
        "pci-0000:03:00.0-scsi-0:0:1:0"
    ]
}

Sample Response


HTTP/1.1 200 OK
x-amzn-RequestId: gur28r2rqlgb8vvs0mq17hlgij1q8glle1qeu3kpgg6f0kstauu0
Date: Wed, 25 Apr 2012 12:00:02 GMT
Content-Type: application/x-amz-json-1.1
Content-length: 85

{
    "GatewayARN": "arn:aws:storagegateway:us-east-2:111122223333:gateway/sgw-12A3456B"
}