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Druva Documentation

Backup and restore FAQs

 

Common backup and restore FAQs 

► How does the Phoenix deduplication algorithm work?
Phoenix uses a deduplication technique that makes use of a variable block sizing technique based on file type to determine globally duplicated data across all your servers. The Phoenix agent only transfers unique blocks of data to the cloud. This ensures massive bandwidth savings of up to 90% in many cases.
► Where is my data backed up?
Phoenix backs up your data in the cloud hosted by Amazon. Phoenix relies on the robustness and the security standards of Amazon Web Services to ensure that your backup data stays safe and secure. 
► What happens if my server loses connectivity?
Phoenix is designed to work efficiently even for organizations with intermittent connectivity.  If Phoenix agents cannot reach Phoenix Cloud, backups or restores stop temporarily. When connectivity resumes, backups or restores start again. A single backup can, therefore, span across multiple backup windows. 
► What are snapshots? 
A snapshot is a point-in-time image of your backup data. To know the type of snapshots that Phoenix supports, see Common terms
► My server is not operational. I want to replace it with another one. Can I? 
Phoenix retains the data from your server that is not operational. You can restore the data to another server. 
► I deprecate servers every 3 years. Can I configure new servers in their place?
Yes, you can. Phoenix retains data from the servers that you deprecate. To set up new servers in their place, restore the data from the deprecated servers to the new servers. 
► What are restores of warm and cold snapshots?
The term "warm" and "cold" signify how old your data is. Restores using warm snapshots are performed for data that is no more than 90 days old. The data is stored in the warm storage. At the end of 90 days, the data is transferred to cold storage, where it resides for as long as you define in the retention policies. For such data, you must use cold snapshots to perform a restore. To know more about hot restore and cold restore, see Common terms
► What happens to my data during a defreeze operation? 
Defreeze is the process of preparing cold snapshots for restore. During a defreeze operation, Phoenix retrieves cold snapshots from cold storage and makes the data available for restore. 
► What is thawed data?
Thawed data is a cold snapshot that has undergone a defreeze operation. The thawed data is available for restore for a specific duration.  
► How does Phoenix handle data availability requirements for regulatory or legal purposes? 
Phoenix stores backups for as long as you need. You can choose from multiple data retention options - as short as 90 days and up to the end of time for retaining data. Data older than 90 days is stored in cold storage. You can restore data stored in archival storage at any time by initiating a defreeze operation. For data that is less than 90 days old, you can perform an on-demand restore. 
► I want to back up secondary servers only if the primary server fails. Can I do this? 
No, you cannot. However, you can create backup sets to back up the content from your secondary servers and your tertiary servers. Phoenix will back up data from your primary, secondary, and tertiary servers according to the schedule defined in the backup policy. 
► Can I specify a bandwidth for backup?
Yes, you can specify the bandwidth limitation for backup.
► Can I specify a bandwidth for restore?
No, you cannot specify the bandwidth limitation for restore. 
► What happens to my data after my contract expires?
After the expiration of your contract, Phoenix does not back up your servers. However, your data is retained on the cloud. You can choose to extend your contract, and then perform a restore of the data.
► Can I export Phoenix data?
No, you cannot export Phoenix data. However, you can choose to restore data to the server to which it belongs, or a new server. 

 File server backup and restore FAQs

► What type of backups does Phoenix perform on File servers?
The first backup of your servers is a full backup. Thereafter, Phoenix performs an incremental backup of all File servers.
► How do I configure my File servers for backup?
Getting your File servers ready for backup is simple. For more information about how to configure File servers for backup, see Configure Phoenix to back up File servers
► What do I need to know before performing a configuration of my File servers?
Before configuring your File servers, we recommend that you read File server configuration checklist. The checklist should help you perform a configuration that is best-suited for your environment.
► What does Phoenix back up?
Phoenix provides support for several file types, out-of-the-box. To see the full list of files that Phoenix backs up, see Default file types for backup.
► What does Phoenix exclude from backup?
By default, Phoenix excludes some file types from backup. To see the full list of files that Phoenix excludes, see Default folder exclusions.
► How do I back up or restore my data?
To know how to back up your File servers, see Back up servers. To know how to restore your File servers, see Restore a File server.
► How does Phoenix back up or restore my file server data?
To understand the workflow at the time of backup, see File server backup workflow.
To know how Phoenix restores your File server data, see File server restore workflow.

SQL server backup and restore FAQs

► What type of backups does Phoenix perform on SQL servers?
The first backup of your servers is a full backup. Thereafter, Phoenix performs an incremental backup. Additionally, Phoenix also supports differential backups of SQL servers. To know more, see Common terms.
► How do I configure my SQL servers for backup?
To know how you can configure SQL servers for backup, see Introduction to Phoenix for SQL servers
► What do I need to know before performing a configuration of my SQL servers?
Before configuring your SQL servers, we recommend that you read SQL server prerequisites and limitations. The checklist should help you perform a configuration that is best-suited for your environment.
► What does Phoenix back up?
Phoenix provides support for backup of MDF, NDF, and LDF files. 
► How do I back up or restore my data?
To know how to back up your SQL servers, see Back up servers . To know how to restore SQL servers, see SQL server restore
► How does Phoenix back up or restore my SQL server data?
To understand the workflow at the time of backup, see full backup, differential backup, and log backup.
To know how Phoenix restores your file server data, see SQL server restore.

VMware backup and restore FAQs

► What type of backups does Phoenix perform on virtual machines?
The first backup of your virtual machines is a full backup. Thereafter, Phoenix performs an incremental backup of your virtual machines. To know more, see Common terms.
► How do I configure my VMware Infrastructure for backup?
To know how you can configure your VMware Infrastructure for backup, see Initial configuration of your VMware setup
► What does Phoenix back up from my virtual machines?
Phoenix backs up VMDK and VMX files. However, only VMDK files are available for restore.  
► What are VMware limitations to backup virtual machines?
To know the VMware limitations, see VMware limitations to backup virtual machines.
► How do I back up or restore my virtual machines?
To know how to backup and restore your virtual machines, see Backup and restore virtual machines.
► How does Phoenix back up or restore my virtual machines?
To understand the workflow at the time of backup, see Virtual machine backup workflow.
To know how Phoenix restores your virtual machines, see Virtual machine restore workflow.
► What happens to the snapshots created by Phoenix for an unsuccessful or canceled backup job? 
From backup proxy version 4.6.9-27918 and later, the snapshots created by Phoenix for a canceled or unsuccessful job will be deleted during the subsequent Backup Now or schedule backup job.