topic Re: inline data compaction and existing data in ONTAP Discussions

inline data compaction and existing data

ACHOU_SIMG — Wed, 04 Jun 2025 18:27:23 GMT

Hi,

ONTAP 9.1RC1

I plan to enable inline data compaction but the volume already has large amuont of data. Does data compaction act on the existing data?

Thanks,

radek_kubka — Mon, 31 Oct 2016 11:24:54 GMT

It is inline process, activated whilst data is being written to the storage system, so will have no effect on already stored data:

radek_kubka — Fri, 04 Nov 2016 15:38:17 GMT

Okay, turns out, with ONTAP 9.1 this command (in advanced privilege) will compact existing data:

cluster::*> volume efficiency start -vserver <svm> -volume <volume> -scan-old-data true -compaction true