This topic describes how to create a cross-zone high availability (HA) file gateway and configure shares for the file gateway in the Cloud Storage Gateway (CSG) console.
Prerequisites
An Alibaba Cloud account is created and real-name verification for the account is complete. For more information, see Create an Alibaba Cloud account.
NoteWe recommend that you log on to the CSG console as a RAM user. For more information, see Use RAM to implement account-based access control.
CSG is activated. If CSG is not activated, follow the on-screen instructions in the CSG console to activate CSG.
A virtual private cloud (VPC) is available in the region where you want to create the file gateway. For more information, see Create a VPC with an IPv4 CIDR block.
An Elastic Compute Service (ECS) instance is created on the VPC in the region where you want to create the file gateway. For more information about how to create an ECS instance, see Create an ECS instance.
NoteIf your on-premises host is connected to the VPC over an Express Connect circuit, you can also perform the steps by using the host.
An Object Storage Service (OSS) bucket is created. For more information, see Get started by using the OSS console.
ImportantWe recommend that you use a zone-redundant storage (ZRS) bucket, which ensures continuous data access even if a zone becomes unavailable.
File gateways support the following storage classes of OSS buckets: Standard, Infrequent Access (IA), and Archive. File gateways do not support OSS buckets for which back-to-origin routing is configured.
We recommend that you do not associate a gateway with an Archive bucket. If files that are written from a file gateway to OSS are infrequently modified, we recommend that you store the files in a Standard or IA bucket first and configure a lifecycle rule that changes the storage class of the files to Archive or Cold Archive. This reduces unnecessary restoration operations and optimizes storage costs and efficiency.
When a client writes a file to a file gateway, the gateway records at least two actions: writing the file and setting the file modification time. The gateway merges the two actions where possible. However, the gateway may still initiate multiple operations on the object to the bucket where the object is stored. The CopyObject operation is called to store the file modification time as a piece of metadata of the object in the bucket. If the object is an Archive or Cold Archive object, this operation requires object restoration, which takes some time to complete. This increases the time required for object uploads and can even cause upload failures if not enough time is left to upload data from the cache.
Create a cross-zone HA file gateway
On the Gateways page of the CSG console, click Create.
In the Create Gateway wizard, configure parameters as described in the following table and retain default settings for unmentioned parameters.
In the Confirmation step, verify your settings and click Completed.
ImportantThe automatic gateway deployment takes about 5 to 10 minutes to complete. When the gateway status is Healthy, the cross-zone HA file gateway is deployed.
After the cross-zone HA file gateway is created, the share specified in the gateway creation process is created, and a virtual IP address is automatically configured for the primary node. If the share no longer meets your requirements, create another share. For more information, see Attach a cache disk and Create a share.
Attach a cache disk
On the Gateways page, click the ID of the gateway. On the page that appears, click .
Specify cache disk specifications by using Cache Calculator or Custom Cache settings.
NoteCapacity
The capacity of a cache disk for a Basic gateway ranges from 100 GB to 4,096 GB.
The capacity of a cache disk for a Standard gateway ranges from 100 GB to 8,192 GB.
The capacity of a cache disk for an Enhanced or Performance Optimized gateway ranges from 100 GB to 32,768 GB.
Type
Select Ultra Disk, Standard SSD, or ESSD based on your business requirements.
Create a share
On the Gateways page, click the ID of the file gateway. On the tab, click Create.
In the Bucket Settings step, configure the parameters described in the following table and click Next.
In the Basic Information step, configure the parameters described in the following table and click Next.
In the Advanced Settings step, configure the parameters described in the following table and click Next.
In the Confirmation step, check the configuration information. If nothing is wrong, click Completed.
Access a share
After you create a share, you can access the share from the client. For more information, see Access shares.