https://community.netapp.com/t5/ONTAP-Discussions/Aggregate-Inline-Deduplication-Statistics/m-p/137790#M30387 <P>First, we are running OnTAP 9.2 P2. After switching to 9.2 I enabled aggregate inline dedupication, created new datastores for our VMware environment, and worked with our VM team to get VMs moved to the new datastores. My&nbsp;goal is to maximize the benefit of aggregate inline deduplication be re-writing each of the VMs. I am also putting all datastores for a particular operating system on one aggregate to also maximize the benefits (i.e. all Server 2012's on one aggregate, all 2008's on another, etc.)</P><P>&nbsp;</P><P>My issue is: I'm not 100% clear on how to track the statistical changes as we migrate VMs. From what I've read in TR-4476, I believe it's saying the aggregate inline deduplication statistics are&nbsp;<STRONG>combined</STRONG> with the aggregate compaction statistics, however I'm not clear on this. Here's the specific quote, from page 25:</P><P>&nbsp;</P><P><SPAN>------------------------------------------------------------</SPAN></P><P>Space savings from cross-volume deduplication are reported as deduplication savings at the aggregate level. Currently, data compaction savings are also reported at the aggregate level. Savings for both compaction and cross-volume deduplication are reported combined.</P><P>------------------------------------------------------------</P><P>&nbsp;</P><P>Here's the command I'm running to obtain full efficiency statistics:</P><P>&nbsp;</P><P>storage aggregate show-efficiency -fields aggregate,volume-efficiency-saved,volume-compression-saved,volume-vbn-zero-saved,aggr-compaction-saved</P><P>&nbsp;</P><P>Based on the above quote, I have been assuming that&nbsp;<STRONG>aggr-compaction-saved</STRONG> is actually the&nbsp;<STRONG>combination</STRONG> of compaction + aggregate inline deduplication savings. I kept this statistic from before I started migrations, and keep watching it as I migrate. It is going up, but it would&nbsp;<STRONG>anyway</STRONG> if it were only showing compaction savings. I just want to verify this is the correct statistic I should be looking at.</P><P>&nbsp;</P><P>Any suggestions?</P> Wed, 04 Jun 2025 14:04:59 GMT TMADOCTHOMAS 2025-06-04T14:04:59Z https://community.netapp.com/t5/ONTAP-Discussions/Aggregate-Inline-Deduplication-Statistics/m-p/137790#M30387 <P>First, we are running OnTAP 9.2 P2. After switching to 9.2 I enabled aggregate inline dedupication, created new datastores for our VMware environment, and worked with our VM team to get VMs moved to the new datastores. My&nbsp;goal is to maximize the benefit of aggregate inline deduplication be re-writing each of the VMs. I am also putting all datastores for a particular operating system on one aggregate to also maximize the benefits (i.e. all Server 2012's on one aggregate, all 2008's on another, etc.)</P><P>&nbsp;</P><P>My issue is: I'm not 100% clear on how to track the statistical changes as we migrate VMs. From what I've read in TR-4476, I believe it's saying the aggregate inline deduplication statistics are&nbsp;<STRONG>combined</STRONG> with the aggregate compaction statistics, however I'm not clear on this. Here's the specific quote, from page 25:</P><P>&nbsp;</P><P><SPAN>------------------------------------------------------------</SPAN></P><P>Space savings from cross-volume deduplication are reported as deduplication savings at the aggregate level. Currently, data compaction savings are also reported at the aggregate level. Savings for both compaction and cross-volume deduplication are reported combined.</P><P>------------------------------------------------------------</P><P>&nbsp;</P><P>Here's the command I'm running to obtain full efficiency statistics:</P><P>&nbsp;</P><P>storage aggregate show-efficiency -fields aggregate,volume-efficiency-saved,volume-compression-saved,volume-vbn-zero-saved,aggr-compaction-saved</P><P>&nbsp;</P><P>Based on the above quote, I have been assuming that&nbsp;<STRONG>aggr-compaction-saved</STRONG> is actually the&nbsp;<STRONG>combination</STRONG> of compaction + aggregate inline deduplication savings. I kept this statistic from before I started migrations, and keep watching it as I migrate. It is going up, but it would&nbsp;<STRONG>anyway</STRONG> if it were only showing compaction savings. I just want to verify this is the correct statistic I should be looking at.</P><P>&nbsp;</P><P>Any suggestions?</P> Wed, 04 Jun 2025 14:04:59 GMT https://community.netapp.com/t5/ONTAP-Discussions/Aggregate-Inline-Deduplication-Statistics/m-p/137790#M30387 TMADOCTHOMAS 2025-06-04T14:04:59Z