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Druva Documentation

Phoenix CloudCache FAQs

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This topic lists the commonly asked questions related to Phoenix CloudCache.

Answers

What does the Phoenix CloudCache license depend on?

The Phoenix CloudCache license is based on the storage space that you require for the data that you want to back up. For more information about licensing, contact your account executive or Druva Support (support@druva.com). 

What difference will deploying Phoenix CloudCache make?

You will see two major differences with Phoenix CloudCache. The backup window will reduce significantly because Phoenix agents can back up large volumes of data to Phoenix CloudCache via your network. Secondly, the data saved to Phoenix CloudCache can be restored at any time during the pre-defined retention period. Such local restores are faster, and they reduce the demand on WAN bandwidth. Additionally, data can be sent to the cloud during off-peak hours, which is ideal for organizations with limited available bandwidth.

How long does Phoenix CloudCache hold my data?

You can configure the number of days for which you want Phoenix CloudCache to hold your data. At the most, you can set a retention period of 30 days for your data. For more information, see Configure Phoenix CloudCache

What is a good size for my Phoenix CloudCache?

The size of Phoenix CloudCache that you require depends on factors such as:

  • The number of server groups (and hence the servers) that you want to back up
  • The type of data backed up
  • Size of backup data (including incremental backups)

For more information, contact Druva Support (support@druva.com). 

How many instances of Phoenix CloudCache do I need?

The number of Phoenix CloudCache instances that you require depends on factors such as:

  • The number of server groups (and hence the servers) that you want to back up
  • The type of data backed up
  • Size of backup data (including incremental backups)

What happens if CloudCache is configured but it is not available when a server triggers backup?

While configuring CloudCache or editing the CloudCache details, if the Backup to Cloud if unable to backup to Cache option is selected, Phoenix Agent backs up the data directly to Phoenix Cloud. Otherwise, the backup operation fails.

What happens if CloudCache is configured but it is not available when the server triggers restore operation?

We have following scenarios:

  1. CloudCache has completed the synchronization of the data with Phoenix Cloud:
    1. In this case, the data is restored from Phoenix Cloud.
  2. CloudCache has not completed the synchronization of the data with Phoenix Cloud:
    1. If CloudCache is completely down, the restore operation fails.
    2. If CloudCache and Phoenix Cloud are still connected, then Phoenix Cloud fetches the data from CloudCache and the data is restored directly from Phoenix Cloud.

Does the CloudCache disk space become free when data is synchronized from CloudCache to Phoenix Cloud?

No. The disk space becomes free according to the retention period configured for the mapped server group. For more information, see Update the retention period of a server group.

My CloudCache decommission is taking long time, what can I do to make it run quicker?

When a decommission operation is initialized, Phoenix CloudCache removes the mapping of all server groups and then synchronizes all data to Phoenix cloud. This entire process can take more time based on the available network bandwidth. Therefore, make the CloudCache synchronization schedule for 24 hours for 7 days. This will ensure that the decommission in not interrupted.

What extra firewall configuration/ports I need to open for CloudCache?

Phoenix CloudCache uses the default 443 port and TLS protocol for all communications. For more information, see Ports and Communication Protocols for Phoenix CloudCache.

How can I ensure that all my hot data is present on the CloudCache so that during restore all data is readily available on the CloudCache?

While configuring CloudCache or editing the CloudCache details, we recommend that you do not select the Backup to Cloud if unable to backup to Cache option.

Does my backup/restore tasks fail if CloudCache is decommissioned or it is in decommissioning mode?

When the decommission operation is initialized, Phoenix CloudCache first removes the mapping of all server groups from CloudCache, and then synchronizes all data to Phoenix cloud. After that, the backup and restore tasks are performed directly from Phoenix Cloud.

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