Cloud Storage Gateway:Manage file gateways

Create a file gateway

1. On the Gateways page of the CSG console, click Create.

2. In the Create Gateway wizard, configure parameters as described in the following table and retain default settings for other parameters.

   Example

   Step	Parameter	Description
   Gateway Information	Name	Specify a name for the gateway. The name must be 1 to 60 characters in length, and can contain letters, digits, underscores (_), hyphens (-), and periods (.). It must start with a letter.
   	Location	Select Alibaba Cloud.
   	Type	Select File Gateway.
   	Region	Select the region of the file gateway.
   Gateway Configurations	VPC	Select the VPC in which you want to deploy the gateway. Note The VPC must be the one in which your ECS instance or on-premises host is located.
   	VSwitch	Select the vSwitch that is connected to the gateway. Note The vSwitch must be the one that is connected to your ECS instance or on-premises host. If no gateway resource is available in the zone where the specified vSwitch resides, create a vSwitch in another zone.
   	Edition	Select Basic, Standard, Enhanced, or Performance Optimized. For more information, see Specifications.
   Config Protocol	Cross-region Binding	If you select Yes, you can access a bucket that resides in a different region from that of the gateway. If you select No, you can only access a bucket that resides in the same region as the gateway.
   	OSS Endpoint	Select an endpoint for the region in which the bucket is located.
   	Bucket Name	Specify the bucket. You can select an existing bucket from the drop-down list. You can also select the Subdirectory check box and enter a subdirectory of the bucket in the text box that appears. The name of a subdirectory can contain only letters and digits. Starting from V1.0.38, you can map the root directory of a file system to a subdirectory of the bucket. This way, you can isolate file access requests. The subdirectory can be an existing directory in the OSS bucket or a directory that has not yet been created in the OSS bucket. After you create a share, the specified subdirectory serves as the root directory and stores all related files and directories. A file gateway does not support OSS buckets for which back-to-origin routing is configured. CSG cannot guarantee that only one write operation is performed on an object. Therefore, buckets for which retention policies are configured are not supported.
   	Public Network Bandwidth	Specify the public bandwidth. This parameter is available only when Cross-region Binding is set to Yes. The default bandwidth is 5 Mbit/s. We recommend that you increase the bandwidth for better data transfer performance. Note If you want to use the gateway or the express synchronization feature across regions, you need to configure this parameter. For more information, see Configure a public bandwidth limit. The public bandwidth ranges from 5 Mbit/s to 200 Mbit/s.
   	Protocol	Specify the protocol that you use to connect to the OSS bucket. You can select NFS or SMB. Use the NFS protocol if you need to access the bucket from a Linux system. Use the SMB protocol if you need to access the bucket from a Windows system.
   	Share Name	Specify a name for the share. If you set the Protocol parameter to NFS, the share name is also used as the virtual path of the share when the mount operation is performed based on NFSv4. Note The name must be 1 to 32 characters in length, and can contain letters, digits, underscores (_), hyphens (-), and periods (.). It must start with a letter.
   	User Mapping	Set the user mapping between the NFS client and the NFS server. This parameter is available only when you set Protocol to NFS. Valid values: none: The NFS client user is not mapped to the nobody user on the NFS server. root_squash: The NFS client that uses the root identity is mapped to the nobody user on the NFS server. all_squash: The NFS client is mapped to the nobody user on the NFS server regardless of the identity that the client uses. all_anonymous: The NFS client is mapped to the anonymous user on the NFS server regardless of the identity that the client uses.
   	Reverse Sync	Select whether to synchronize metadata of objects in the bucket to your local device. The reverse synchronization feature is useful in scenarios such as disaster recovery, data recovery, and data sharing. Note During a reverse synchronization process, the system scans all objects in the bucket. If the bucket contains a large number of objects, you are charged for calling the OSS API. For more information, see Pricing.
   	Reverse Sync Interval	If you set Reverse Sync to Yes, you must set the Reverse Sync Interval parameter. Valid values: 15 to 36000. Unit: seconds. Note If the bucket contains a large number of objects, we recommend that you set the interval to a value greater than 3,600 seconds. Otherwise, repeated scans result in frequent OSS API calls. This causes an increase in fees generated by OSS API calls.
   	Cache Disk Type	Select Ultra Disk, Standard SSD, or ESSD based on your business requirements.
   	Cache Capacity	The capacity of a cache disk for a Basic gateway ranges from 40 GB to 4,096 GB. The capacity of a cache disk for a Standard gateway ranges from 40 GB to 8,192 GB. The capacity of a cache disk for an Enhanced or Performance Optimized gateway ranges from 40 GB to 32,768 GB.
   Billing Information	Billing Method	Select Pay-as-you-go or Subscription. For more information, see Billable items and billing methods. If you select Subscription, you are redirected to the subscription purchase page after you create the file gateway. Complete the payment. For more information, see Purchase a gateway.
   	Expiration Policy	Select an expiration policy for the gateway subscription. You can select Switch to Pay-as-you-go or Release.

3. In the Confirmation step, check the configuration information. If nothing is wrong, click Complete.