Thanks for pointing out the KB article. I was reading TR-4476 earlier and it looks like it may need an update. Unless I'm missing something, the table on page 40 only applies to pre-8.3.1 versions of ONTAP where postprocess compression is not supported. https://www.netapp.com/us/media/tr-4476.pdf
I now see that on page 32 it mentions support for the background compression scanner in 8.3.2 and later. A footnote on the table on page 40 would be helpful.
On Tue, Oct 16, 2018 at 4:04 PM Konnerth, Karl Karl.Konnerth@netapp.com wrote:
Hi Phil,
NetApp does support running the background compression scanner on AFF volumes. Please see this KB article: https://kb.netapp.com/app/answers/answer_view/a_id/1030585
---Karl
-----Original Message----- From: toasters-bounces@teaparty.net toasters-bounces@teaparty.net On Behalf Of Philbert Rupkins Sent: Tuesday, October 16, 2018 1:51 PM To: Toasters toasters@teaparty.net Subject: AFF Post Process Compression?
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Hello Toasters,
I've come across several docs that make it clear that both secondary and adaptive post-process compression are not compatible with AFF systems. I have yet to find an explanation for this.
Does anybody know why? My best guess is it will shorten the life of the SSD's.
We have several large deduped-but-not-compressed volumes we're migrating from 8.1.4 7-Mode to AFF systems running ONTAP 9.2. I was hoping to run post-process compression on these volumes once cutover to the 9.2 system to reap additional savings.
I'm currently looking into enabling compression before cutting the volumes over to ONTAP9. However, each volume has 70+ snapshots associated with them and I see best practices for compression suggest removing as many snpashots as possible before running the post-process job.
Thank you, Phil _______________________________________________ Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters