Applies to ONTAP 9 Description A common task for a system under resource contention is to stagger the schedules of a background task. This article provides the steps of creating a schedule and a dedup...Applies to ONTAP 9 Description A common task for a system under resource contention is to stagger the schedules of a background task. This article provides the steps of creating a schedule and a dedupe policy to stagger the volumes as needed.
The article cover what causes high response times for volumes on SATA or SAS disks when workload increases and what you need to do to reduce, stagger, or monitor workloads causing high disk latency an...The article cover what causes high response times for volumes on SATA or SAS disks when workload increases and what you need to do to reduce, stagger, or monitor workloads causing high disk latency and utilization.
Applies to Data ONTAP 7-mode SnapMirror Unified Manager Disks are highly utilized on a node with SnapMirror destination volumes or SVM DR destination. For a complete understanding on the disk utilizat...Applies to Data ONTAP 7-mode SnapMirror Unified Manager Disks are highly utilized on a node with SnapMirror destination volumes or SVM DR destination. For a complete understanding on the disk utilization, please refer to How to address High Disk Utilization This may cause alerts in Unified Manager similar to the example below Cluster Name - ClusterName Trigger Condition - MAX Data Disk Utilization value of 97% on AggrName has triggered a WARNING event based on threshold setting of 95%.
Applies to ONTAP 9 Compaction enabled Inline Deduplication disabled iozone Issue Low read throughput when using iozone with Compaction enabled and Inline Deduplication disabled
When attempting a SIS clone operation on a file or LUN level, the following error is reported: Error: command failed: Clone start failed: Clone operation failed to start: Max Dense limit is reached. M...When attempting a SIS clone operation on a file or LUN level, the following error is reported: Error: command failed: Clone start failed: Clone operation failed to start: Max Dense limit is reached. Mon Apr 20 05:17:40 CEST [cluster1-01: svc_queue_thread: wafl.sis.clone.create.failed:info]: File clone create of file /vol/vol1q1/mydata.vmdk in volume vol1 failed with error: Max Dense limit is reached..
Applies to ONTAP 9 CIFS Answer Free space and space utilization seen from a client's perspective will always take into account space savings mechanisms(compression/compaction/deduplication). Additiona...Applies to ONTAP 9 CIFS Answer Free space and space utilization seen from a client's perspective will always take into account space savings mechanisms(compression/compaction/deduplication). Additional Information How to see space savings from deduplication, compression, and compaction in ONTAP 9
Applies to Clustered Data ONTAP 8 ONTAP 9 Description Under certain conditions, it becomes necessary to limit the maximum number of post-process volume efficiency operations that run in parallel on a ...Applies to Clustered Data ONTAP 8 ONTAP 9 Description Under certain conditions, it becomes necessary to limit the maximum number of post-process volume efficiency operations that run in parallel on a ONTAP node.
Applies to ONTAP 9 Answer In sis status -l the last Deduplication/Compression scan run and its statistics is collected. If there is no Dedupe/Compression enabled (or run for a long time) these logs wi...Applies to ONTAP 9 Answer In sis status -l the last Deduplication/Compression scan run and its statistics is collected. If there is no Dedupe/Compression enabled (or run for a long time) these logs will be not captured by Autosupport. Additional Information NetApp Active IQ reports only one volume's storage efficiency information
The system provided the additional explanation: 'Preparing source volume for cutover: Deduplication is not ready for vol move cutover'. After a short delay, the volume move operation will reattempt cu...The system provided the additional explanation: 'Preparing source volume for cutover: Deduplication is not ready for vol move cutover'. After a short delay, the volume move operation will reattempt cutover entry. Detailed Status: Waiting to Cutover. (Preparing source volume for cutover: Deduplication is not ready for volmove cutover Sent)::Reason: 3.11TB Volume move job monitoring transfer of data.
Applies to Active IQ Unified Manager 9.6P1 ONTAP 9.5P8, 9.3P9 Mirror destination volumes Issue Deduplication savings statistics not available for volumes even though the current saving is shown in vol...Applies to Active IQ Unified Manager 9.6P1 ONTAP 9.5P8, 9.3P9 Mirror destination volumes Issue Deduplication savings statistics not available for volumes even though the current saving is shown in volume details. Deduplication savings statistics not available for volumes type DP It means if the volume is part of a mirror relation and has type DP no saving statistics are available it affects the historical saving data for the volume
