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July 9th, 2020 02:00
Block level backup to tape of a Netapp filer
Hey,
We have a Netapp NAS with tons of small files on it. Traditional backup (via NFS) takes forever.
What are the options using Networker 18 with tape backup? Yes, direct backup to tape.
Ideally I'd want to copy a block-level backup (hence using full speed) from the Netapp, and have Networker index it after that is done (such that file-level restore is possible).
How would I make that work and what do I need to accomplish that?
Thanks.
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bingo.1
2.4K Posts
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July 9th, 2020 02:00
Snapmirror to tape (SMTape) is able to do the backup. Unfortunately, it does not allow file indexing.
From the NW 19.3 NDMP User Guide:
SMTape provide the following benefits:
• Performs block-level backup of SnapMirror volumes on NetApp filers.
• Reduces the backup window when millions of files reside on the NetApp filer.
Use the SMTape feature in instances where NDMP full backups become impractical.
The SMTape option:
• Copies large NetApp file systems to secondary storage instead of using the standard NDMP full
or differential backups.
• Supports a 240 KB block size.
• Allows mirroring of backups to disk and to tape devices.
• Supports only full volume backups and recoveries. You cannot use SMTape for file indexes or file
restores.
• Supports only save set recoveries.
• Does not support incremental and differential backup levels.
The NAS generates a snapshot of the file system at the beginning of the SMTape operation. Use
environment variables to control the conditional call to retain or delete the snapshot. Creating and
configuring the NDMP client resource on page 55 describes how to configure an NDMP client using
SMTape.
bingo.1
2.4K Posts
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July 9th, 2020 03:00
I forgot to mention DSA which you could use as well. And it does write the CFI information. But I think it will not be as fast as SMT. For more info, please consult the same manual and look for "NDMP backups to non-NDMP devices (NDMP-DSA)".