11.1 Understanding Cloud Storage

Dynamic File Services supports the use of cloud storage as the secondary location in a retention pair. Your cloud storage must be configured and available to the retention pair whenever actions are performed that involve the secondary path, such as the initial setup of the pair, policy moves, manual moves, and retention reviews.

11.1.1 Supported Cloud Storage Providers

Dynamic File Services 2.1 supports the following cloud storage providers. You create an account with the provider.

11.1.2 Maximum Storage Size for Cloud Storage

The maximum amount of space that your files can consume in the cloud is governed by the service level agreement with your cloud storage provider. The storage quota is enforced by your provider. If you reach the set quota, files cannot be uploaded until you remove files to make space available, or unless you increase the quota. For example, you can remove files from the retention repository by using the Delete and Restore features of the Retention Review Service. For information, see Section 12.6, Reviewing Files in the Retention Repository.

11.1.3 Maximum File Size for Uploads to Cloud Storage

The maximum size per file that can be uploaded to cloud storage is governed by the service level agreement with your cloud storage provider. The storage quota and file size limit is enforced by your provider. In addition, a file must be smaller than the remaining available space below your quota.

Table 11-1 provides information about the known file size restrictions for the supported cloud providers. Refer to your cloud storage provider’s documentation for information about the maximum file size allowed for uploads.

Table 11-1 Cloud Provider Upload File Size Restrictions

Cloud Provider

Upload File Size Restrictions

Amazon S3

Amazon S3 allows upload file sizes from 1 byte to 5 terabytes per file. For information, see FAQs: How much data can I store?.

Box

Box limits the upload file size to 2000 MB per file. See Select a Box Plan.

CloudMe

Cloudme limits the upload file size for free and basic accounts to 150 MB per file. For information see CloudMe Price Plan and Accounts.

Dropbox

Dropbox limits the upload file size for developer applications to 150 MB per file. For information, see the developer documentation for Dropbox REST APIs.

Larger file sizes require the Dropbox client application or the Dropbox Web browser interface. For information, see Help Center: Is there a limit or maximum to how big my files can be?.

11.1.4 Cloud Credentials

On the DynamicFS server, you set up cloud accounts to store your credentials for the cloud locations that you want to use in retention pairs. The credentials are stored securely. The Service uses the credentials to connect to the cloud when it performs actions on the files on your behalf, such as for policy moves, manual moves, and retention reviews.

For information about the types of credentials used by cloud providers, see Section 11.1.5, Types of Cloud Access Authentication Credentials.

For information about how to get credentials and allow Dynamic File Services to access the account, see Section 11.2, Setting Up Cloud Access Credentials and Folders for Your Cloud Storage Provider.

11.1.5 Types of Cloud Access Authentication Credentials

The Dynamic File Services application must provide credentials to your cloud provider when it accesses files on your behalf. Table 11-2 describes the types of credentials that you might be asked to provide. The values should conform to the format rules that are set by your cloud provider. For information about which credentials are required by your provider, see Section 11.2, Setting Up Cloud Access Credentials and Folders for Your Cloud Storage Provider.

Table 11-2 Types of Cloud Access Credentials

Cloud Parameter

Description

Account name

Your login user name for the cloud provider’s site.

Account password

The password for the login user name that you provided as the cloud account name.

Application key

A text string that uniquely identifies the Dynamic File Services application to your Dropbox cloud storage account.

Application secret

A secret character string that is used as a password for the application key that is used to access your DropBox cloud storage account.

Application secret token

A text string that is retrieved from your Dropbox cloud provider by Dynamic File Services as part of a two-phase OAuth authentication process. The token helps to form a URL where you log in to authorize Dynamic File Services to access your files.

Access key ID

An alphanumeric secret text string that uniquely identifies the user who owns the Amazon S3 account. The ID is 20 characters long.

Secret access key

A secret character string that is used as a password for the access key ID for your Amazon S3 account. The key is 40 characters long.

Bucket name

A container for objects stored in Amazon S3. A single account can have multiple buckets.

For example, if the object named photos/puppy.jpg is stored in the johnsmith bucket, then it is addressable by using the URL http://johnsmith.s3.amazonaws.com/photos/puppy.jpg.