NDMP dump backup and NDMP Levels on NetApp FAS
Dump is a Snapshot copy-based backup and recovery solution used by NetApp to back up files and directories from a Snapshot copy to a Disk/tape device.
You can back up your file system data, such as directories, files, and their associated security settings by using the dump backup. You can back up an entire volume, an entire qtree, or a subtree that is neither an entire volume nor an entire qtree.
When you perform a dump backup, you can specify the Snapshot copy to be used for a backup. If you do not specify a Snapshot copy for the backup, the dump engine creates a Snapshot copy for the backup, and after the backup operation is completed, the dump engine deletes this Snapshot copy.
NDMP = Mechanism + Protocol
M= dump, tar, cpio
P= TCP/IP + XDR
NetApp use = dump
Ontap 7-mode dump Levels:
With ontap 7-mode : You can perform level-0 Full, incremental[1-9], or differential[1] backups to tape/disk by using the dump engine.
Level 0 or Full Backup:
A Full Backup provides a backup of all the data in the selected path.
Level 1 through 9 or Incremental Backup:
The Incremental Backups base themselves on the most recent lower-level Incremental Backup, and include any data that has changed or is new since the last Full or Incremental Backup.
Maximum number of consecutive incremental backups permitted after a full backup is 9, as shown below.
After a differential backup, the maximum is 8, as shown below.
dump levels on Clustered Data ONTAP 8.3 onwards:
Clustered Data ONTAP 8.3 onwards supports 32 levels of dump Backups.
Level 0 = is a Full Backup.
Level 1 through Level 31 are Incremental Backups.
Maximum number of consecutive incremental backups permitted after a full backup is 31, as shown below.
Please Note: For data ontap versions prior to 8.3,the maximum number of consecutive incremental backups permitted after a full backup is 9. After a differential backup, the maximum is 8 just like 7-mode.
For IntelliSnap [SnapDiff] NAS backup, there is no such limitation, whatever is the Volume snapshot limit applies, for NetApp systems, a volume can have maximum 255 snapshots.
Dump is a Snapshot copy-based backup and recovery solution used by NetApp to back up files and directories from a Snapshot copy to a Disk/tape device.
You can back up your file system data, such as directories, files, and their associated security settings by using the dump backup. You can back up an entire volume, an entire qtree, or a subtree that is neither an entire volume nor an entire qtree.
When you perform a dump backup, you can specify the Snapshot copy to be used for a backup. If you do not specify a Snapshot copy for the backup, the dump engine creates a Snapshot copy for the backup, and after the backup operation is completed, the dump engine deletes this Snapshot copy.
NDMP = Mechanism + Protocol
M= dump, tar, cpio
P= TCP/IP + XDR
NetApp use = dump
Ontap 7-mode dump Levels:
With ontap 7-mode : You can perform level-0 Full, incremental[1-9], or differential[1] backups to tape/disk by using the dump engine.
Level 0 or Full Backup:
A Full Backup provides a backup of all the data in the selected path.
Level 1 through 9 or Incremental Backup:
The Incremental Backups base themselves on the most recent lower-level Incremental Backup, and include any data that has changed or is new since the last Full or Incremental Backup.
Maximum number of consecutive incremental backups permitted after a full backup is 9, as shown below.
After a differential backup, the maximum is 8, as shown below.
dump levels on Clustered Data ONTAP 8.3 onwards:
Clustered Data ONTAP 8.3 onwards supports 32 levels of dump Backups.
Level 0 = is a Full Backup.
Level 1 through Level 31 are Incremental Backups.
Maximum number of consecutive incremental backups permitted after a full backup is 31, as shown below.
Please Note: For data ontap versions prior to 8.3,the maximum number of consecutive incremental backups permitted after a full backup is 9. After a differential backup, the maximum is 8 just like 7-mode.
For IntelliSnap [SnapDiff] NAS backup, there is no such limitation, whatever is the Volume snapshot limit applies, for NetApp systems, a volume can have maximum 255 snapshots.
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