Veritas Help Center

Configuring the cloud as a tier for scale-out file systems

Veritas Access Administrator's Guide

You can configure the following clouds as a storage tier with a scale-out file system:

Amazon S3
Amazon Glacier
AWS GovCloud(US)
Azure
Alibaba
Google cloud
IBM Cloud Object Storage
Veritas Access S3
Any S3-compatible storage provider

The data is always written to the on-premises storage tier and then data can be moved to the cloud tier by setting up policies. The policies can be configured based on access time, modification time, and pattern of the files. File metadata including any attributes set on the file resides on-premises even though the file is moved to the cloud. The cloud as a tier feature is best used for moving infrequently accessed data to the cloud.

See About scale-out file systems

Warning:

When any cloud service is used as a cloud tier for a file system, Veritas Access exclusively owns all the buckets and the objects created by Veritas Access. Any attempt to tamper with these buckets or objects outside of Veritas Access corrupts the files represented by those modified objects.

See Moving files between tiers in a scale-out file system

See the storage_cloud(1) man page for detailed examples.

See the storage_tier(1) man page for detailed examples.

Warning:

Veritas Access cannot add a cloud tier if the clock on the Veritas Access system is more than 15 minutes out-of-sync with the actual time. To ensure that the Veritas Access clock time is accurate, configure an NTP server or use the System> clock set command.

To configure the cloud as a tier for scale-out file systems

Display the available cloud services.
```
Storage> cloud listservice service_name
                     
                  
```
If the cloud service is not listed, you may need to add the cloud subscription to the cluster.

See About the cloud gateway

Add the cloud as a tier to a scale-out file system.

Storage> tier add cloud fs_name 
                        tier_name 
                        service_name 

                        region S3 | Glacier

Amazon AWS has standard regions defined. Based on the region you choose in Veritas Access, AWS storage is served through that region. To get better performance, always select the closest geographic region.

Verify that the cloud tier is configured on the specified scale-out file system.

Storage> tier list fs_name

To remove the cloud tier

Remove the cloud tier.
```
Storage> tier remove fs_name 
                        tier_name
                     
                  
```
If there are any files present in the cloud tier, the remove cloud tier operation fails. Move the files back to the primary tier before removing the cloud tier.