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Not sure about this. Did you check out TR-4476 "NetApp Data Compression, Deduplication, and Data Compaction" from May 2017?

Page 25 says "Space savings from cross-volume deduplication are reported as deduplication savings at the aggregate level.".

Best regards
Oliver Gill
Advanced UniByte

Von: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] Im Auftrag von Alexander Griesser
Gesendet: Freitag, 18. August 2017 22:36
An: <Toasters@teaparty.net>
Betreff: Ontap 9.2 aggregate inline deduplication visible to volume owners?

Hi,

I was reading quite some docs on the new AID (aggregate inline deduplication) feature in Ontap 9.2 but failed to find out if the space savings would be visible to the volume owners when mounting them via NFS.
F.ex. if you provide an iSCSI LUN on a deduplicated volume to a tenant, he will not see the deuplication savings because they will only be at the volume level which he cannot see.
For filebased storage, like CIFS or NFS shares, the tenant will immediately see the space savings due to deduplication.
Is this also the case for AID or will only the volume footprint shrink on the aggregate level (since all volumes participating in AID need to be thin anyways) but the space usage in the volume will still show the non-deduped size for the tenant?

Thanks,

Alexander Griesser
Head of Systems Operations

ANEXIA Internetdienstleistungs GmbH

E-Mail: AGriesser@anexia-it.com<mailto:AGriesser@anexia-it.com>
Web: http://www.anexia-it.com<http://www.anexia-it.com/>

Anschrift Hauptsitz Klagenfurt: Feldkirchnerstra?e 140, 9020 Klagenfurt
Gesch?ftsf?hrer: Alexander Windbichler
Firmenbuch: FN 289918a | Gerichtsstand: Klagenfurt | UID-Nummer: AT U63216601

Advanced UniByte GmbH - Paul-Lechler-Stra?e 8 - 72555 Metzingen - Tel: 07123/9542-0 - Fax: 07123/9542-3-100 - info@au.de<mailto:info@au.de>
HRB 352782, Amtsgericht Stuttgart - Geschaeftsfuehrer: Sandro Walker - Sitz: Metzingen - www.au.de<http://www.au.de>

Diese E-Mail ist nur fuer den Empfaenger bestimmt und kann vertrauliche oder rechtlich geschuetzte Informationen enthalten, deren Kopieren, Weitergabe an Dritte oder sonstige Verwendung untersagt ist. Wenn Sie nicht der richtige Empfaenger sind, unterrichten Sie uns bitte umgehend telefonisch oder per E-Mail und loeschen Sie diese E-Mail. Vielen Dank!

Hi Oliver,

yes, I read that and it absolutely makes sense that the dedupe savings show up on the aggregate level, but the question is, if the tenant will also see a reduced volume footprint on the mounted volume. I guess I'll just have to give it a try on one of my demo boxes to get the answer to this question, because the documentation is not really clear to me in this regard.

Best,

Alexander Griesser
Head of Systems Operations

ANEXIA Internetdienstleistungs GmbH

E-Mail: AGriesser@anexia-it.com<mailto:AGriesser@anexia-it.com>
Web: http://www.anexia-it.com<http://www.anexia-it.com/>

Anschrift Hauptsitz Klagenfurt: Feldkirchnerstra?e 140, 9020 Klagenfurt
Gesch?ftsf?hrer: Alexander Windbichler
Firmenbuch: FN 289918a | Gerichtsstand: Klagenfurt | UID-Nummer: AT U63216601

Von: Oliver Gill [mailto:oliver.gill@au.de]
Gesendet: Dienstag, 22. August 2017 10:34
An: Alexander Griesser <AGriesser@anexia-it.com>; <Toasters@teaparty.net> <Toasters@teaparty.net>
Betreff: AW: Ontap 9.2 aggregate inline deduplication visible to volume owners?

Not sure about this. Did you check out TR-4476 "NetApp Data Compression, Deduplication, and Data Compaction" from May 2017?

Page 25 says "Space savings from cross-volume deduplication are reported as deduplication savings at the aggregate level.".

Best regards
Oliver Gill
Advanced UniByte

Von: toasters-bounces@teaparty.net<mailto:toasters-bounces@teaparty.net> [mailto:toasters-bounces@teaparty.net] Im Auftrag von Alexander Griesser
Gesendet: Freitag, 18. August 2017 22:36
An: <Toasters@teaparty.net<mailto:Toasters@teaparty.net>>
Betreff: Ontap 9.2 aggregate inline deduplication visible to volume owners?

Hi,

I was reading quite some docs on the new AID (aggregate inline deduplication) feature in Ontap 9.2 but failed to find out if the space savings would be visible to the volume owners when mounting them via NFS.
F.ex. if you provide an iSCSI LUN on a deduplicated volume to a tenant, he will not see the deuplication savings because they will only be at the volume level which he cannot see.
For filebased storage, like CIFS or NFS shares, the tenant will immediately see the space savings due to deduplication.
Is this also the case for AID or will only the volume footprint shrink on the aggregate level (since all volumes participating in AID need to be thin anyways) but the space usage in the volume will still show the non-deduped size for the tenant?

Thanks,

Alexander Griesser
Head of Systems Operations

ANEXIA Internetdienstleistungs GmbH

E-Mail: AGriesser@anexia-it.com<mailto:AGriesser@anexia-it.com>
Web: http://www.anexia-it.com<http://www.anexia-it.com/>

Anschrift Hauptsitz Klagenfurt: Feldkirchnerstra?e 140, 9020 Klagenfurt
Gesch?ftsf?hrer: Alexander Windbichler
Firmenbuch: FN 289918a | Gerichtsstand: Klagenfurt | UID-Nummer: AT U63216601

Advanced UniByte GmbH - Paul-Lechler-Stra?e 8 - 72555 Metzingen - Tel: 07123/9542-0 - Fax: 07123/9542-3-100 - info@au.de<mailto:info@au.de>
HRB 352782, Amtsgericht Stuttgart - Geschaeftsfuehrer: Sandro Walker - Sitz: Metzingen - www.au.de<http://www.au.de>

Diese E-Mail ist nur fuer den Empfaenger bestimmt und kann vertrauliche oder rechtlich geschuetzte Informationen enthalten, deren Kopieren, Weitergabe an Dritte oder sonstige Verwendung untersagt ist. Wenn Sie nicht der richtige Empfaenger sind, unterrichten Sie uns bitte umgehend telefonisch oder per E-Mail und loeschen Sie diese E-Mail. Vielen Dank!