This article summarizes the supported settings and limitations when backing up Azure file shares by using Azure Backup.
You can use the Azure Backup service to back up Azure file shares. This article summarizes support settings when you back up Azure file shares with Azure Backup.
Note
Azure Backup currently doesn't support NFS shares.
Supported regions
Azure file shares backup is available in all regions, except for China East, and China North.
Supported storage accounts
Storage account details
Support
Account Kind
Azure Backup supports Azure file shares present in general-purpose v1, general-purpose v2, and file storage type storage accounts
Performance
Azure Backup supports file shares in both standard and Premium Storage accounts
Replication
Azure file shares in storage accounts with any replication type are supported
Firewall enabled
Azure file shares in storage accounts with Firewall rules that allow Azure Services to access storage account are supported
Supported file shares
File share type
Support
Standard (with large file shares enabled)
Supported
Large
Supported
Premium
Supported
File shares connected with Azure File Sync service
Supported
Protection limits
Setting
Limit
Maximum number of file shares that can be protected per vault per day
200
Maximum number of storage accounts that can be registered per vault per day
50
Maximum number of file shares that can be protected per vault
2000
Maximum number of storage accounts that can be registered per vault
200
Backup limits
Setting
Limit
Maximum number of discoveries of containers that can be backed up to Recovery Services Vault per day
50
Maximum number of inquiries for protectable items under the given container per day
25
Maximum number of Configure backup per day
200
Maximum number of on-demand backups per day
10
Setting
Limit
Maximum number of scheduled backups per day
6
Restore limits
Setting
Limit
Maximum number of restore per day
20
Setting
Limit
Maximum size of a file (if the destination account is in a Vnet)
1TB
Maximum number of individual files or folders per restore, if ILR (Item level recovery)
99
Maximum recommended restore size per restore for large file shares
15 TiB
Maximum duration of a restore job
15 days
Retention limits
Setting
Limit
Maximum total recovery points per file share at any point in time
200
Maximum retention of recovery point created by on-demand backup
10 years
Maximum retention of daily recovery points (snapshots) per file share, if daily frequency
200 days
Maximum retention of daily recovery points (snapshots) per file share, if hourly frequency
Floor (200/number of snapshots according to the schedule)-1
Maximum retention of weekly recovery points (snapshots) per file share
200 weeks
Maximum retention of monthly recovery points (snapshots) per file share
120 months
Maximum retention of yearly recovery points (snapshots) per file share
10 years
Supported restore methods
Restore method
Details
Full Share Restore
You can restore the complete file share to the original or an alternate location
Item Level Restore
You can restore individual files and folders to the original or an alternate location
Daylight savings
Azure Backup doesn't support automatic clock adjustment for daylight saving time for Azure VM backups. It doesn't shift the hour of the backup forward or backwards. To ensure the backup runs at the desired time, modify the backup policies manually as required.
Support for customer-managed failover
This section describes how your backups and restores are affected after customer-managed failovers.
The following table lists the behavior of backups due to customer-initiated failovers:
Failover type
Backups
Restore
Enabling protection (re-protection) of failed over account in secondary region
Customer-managed planned failover
Supported
Supported
Not supported
Customer-managed unplanned failover
Not supported
Only cross-region restore from the vault is supported.