Efficiency KBs
Efficiency KBs
Featured
What is NetApp Storage Efficiency
Which features help reduce the amount of physical capacity taken up by data in your storage system?
Which features help reduce the amount of physical capacity taken up by data in your storage system?
Analyze capacity and storage efficiency savings
How to use Storage Efficiency Dashboard to show space savings
How to use Storage Efficiency Dashboard to show space savings
Efficient Storage
Efficiency guarantee for AFF systems
Efficiency guarantee for AFF systems
Back to Basics: Deduplication
NetApp Data Deduplication significantly decreases storage capacity requirements
NetApp Data Deduplication significantly decreases storage capacity requirements
Back to Basics: Data Compression
NetApp’s solution for transparent inline data compression
NetApp’s solution for transparent inline data compression
A look inside Data Compaction
What is it, how it works, and how it relates to compression
What is it, how it works, and how it relates to compression
Other Resources
- Why cross volume deduplication scan progress shows Progress: xx KB done larger than the aggregate physical capacity?Fri, 06 Mar 2026
- Why is the storage efficiency savings percentage at the volume level different from that at the aggregate level?Fri, 06 Mar 2026
- What are the differences in items and contents when specifying the efficiency policy for a volume?Fri, 06 Mar 2026
- What is the difference between the deduplication scan options “scan-old-data” and “scan-all”Fri, 06 Mar 2026
- What is the estimated duration for post-process efficiency operations?Fri, 06 Mar 2026
- sis changelog full error is reported several times a dayFri, 06 Mar 2026
- Source volume smaller than destination volumeFri, 06 Mar 2026
- storage efficiency mode of ONTAP volume is always "efficient" on AFF A1K, A70, A90, and C80Fri, 06 Mar 2026
- Unable to Modify Volume Efficiency Settings Due to AutoAdaptive CompressionFri, 06 Mar 2026
- Veeam backup fails because there is not snapshot in the volumeFri, 06 Mar 2026
- Is the deduplication rate differ depending on the number of volumes?Fri, 06 Mar 2026
- Is there a way to check the compression ratio for individual files?Fri, 06 Mar 2026
- Long Ddeduplication processing time for specific volume in ONTAP 9Fri, 06 Mar 2026
- Low data reduction ratio observed for backup workloadsFri, 06 Mar 2026
- Lower efficiency ratios after data migrating from FAS to AFFFri, 06 Mar 2026
- Percentage Saved by Storage Efficiency have a difference of 4% per volume even if all data on the volume is copied from anotherFri, 06 Mar 2026
- How to Enable Compression and Deduplication on an Existing VolumeFri, 06 Mar 2026
- Increased aggregate usable space in ONTAP 9.12.1 and laterFri, 06 Mar 2026
- Is efficiency process performed on the Snapshots created after "volume efficiency start" execution?Fri, 06 Mar 2026
- Is NetApp deduplication transparent to the virtual machine?Fri, 06 Mar 2026
- Vol move not progressing, Deduplication is not ready for volmove cutoverFri, 06 Mar 2026
- What is adaptive compression of ONTAP 9 storage efficiency feature?Fri, 06 Mar 2026
- What is the expected behavior during VMotion with inline dedup/compression enabled?Fri, 06 Mar 2026
- What is the start time for the Storage Efficiency default daily policy?Fri, 06 Mar 2026
- What kind of volumes can not be run the deduplication manually?Fri, 06 Mar 2026
- What storage efficiencies are available on systems with the DPO license installed?Fri, 06 Mar 2026
- When Should I Not Consider Enabling Compression and/or Deduplication?Fri, 06 Mar 2026
- Why "volume show" shows a value greater than 0 for "Space Saved by Deduplication" even if volume efficiency policy is not set ?Fri, 06 Mar 2026
- Why does datastore space consumption look different in ONTAP?Fri, 06 Mar 2026
- "volume efficiency show" command displays active progress even out of scheduleFri, 06 Mar 2026
- "volume efficiency start" command fails with error "Cannot perform efficiency operations on deprioritized volume"Fri, 06 Mar 2026
- Volume efficiency operations do not complete and show the error "Metafile does not exist"Fri, 06 Mar 2026
- volume efficiency show displays "Last Operation Error: No compressed data in the volume"Fri, 06 Mar 2026
- Volume move operation stuck with "Deduplication operation is not configured" errorFri, 06 Mar 2026
- Has Savings is displayed as Yes even though Cross Volume Dedupe settings is disabledFri, 06 Mar 2026
- The efficiency of the snapmirror volumes are always enabledFri, 06 Mar 2026
- VMWare NFS datastore size is lower than ONTAP volume sizeFri, 06 Mar 2026
- Volume Efficiency (deduplication) not completing for auto efficiency policy when changelog usage is over 20 percentFri, 06 Mar 2026
- Volume efficiency policy cannot be modified and volume cannot be promotedFri, 06 Mar 2026
- Volume efficiency undo not supported on FlexGroupsFri, 06 Mar 2026