NetApp inline deduplication on not AFF or hybrid systems enable

By | 7. April 2017

In one of my last posts I had described that the NetApp AFF A200 seen from a hardware perspective, nothing is as the FÁS 2650. One of the differences is that in the A200 AFF all efficiency mechanisms by default are active.

FÁS 2650 in hindsight, you can activate mechanisms on which the efficiency. That is my approach but for inexperienced users slightly "tricky", so here:

Usually, we enable the efficiency mechanisms as follows:

NetAppCluster01: :> volume efficiency modify-vserver SVM FOR NFS01
-volume NFSDATASTORE01 - policy inline-only inline-dedupe true

In a normal FÁS 2650 we get but then following message:

Error: command failed: failed to modify efficiency configuration for volume NFSDATASTORE01 "
of vServer "SVM-FOR-NFS01":
Inline deduplication is supported only for volumes that are either
owned by nodes that are all-Flash optimized personality
enabled or on hybrid unit.

Wait what? DerSchmitz told you there crap us? The sign says, that I need an all Flash FAS node or a hybrid unit!

I have the Mhh and both on the machine can't see from here the console output. I have a FÁS 2650 with SSD only. So no AFF but only one FAS with SSDs. Stupid started. Send the order back cancel and make Atonement?

No! Inline dedup can be used at any of cDOT FAS. No matter whether your SSDs SAS or SATA mounted plates have.

WARNING in advance! Inline dedup demands a lot from the heads of the controller and in particular by the plates. It is a bad idea inline dedup for normal SAS units or even NL SAS units or Volumes that are on it to enable. I guess expressly to enable aggregate-based volumes from inline dedup SAS or NL SAS! That draws you in case the performance of the entire system in the basement.

We lead but now how to inline dedup on one not AFF or activated a hybrid unit.

First, we entering the diag mode:

NetAppCluster01: :> set - priv diag

Then we go into the focus of ClusterNodes (we have to do this Yes for each node)

NetAppCluster01: * > system node run node NetappCluster01Node01
NetAppCluster01-01 >

We go there in the diag mode:

NetAppCluster01-01 > priv set diag
NetAppCluster01-01 * >

And now we make Voodoo!

You now type:

options sis. idedup_allow_non_aff_hya on

and then get a message that the option is not known.

If you then but a 

sis options

You can enter, then see her is that the option to on.

Now, you can enable your inline dedup for the volume:

NetAppCluster01: :> volume efficiency modify-vserver SVM FOR NFS01
-volume NFSDATASTORE01 - policy inline-only inline-dedupe true
Warning: The efficiency policy "inline-only" will disable
background operations efficiency with deduplication on the
volume. Use "-inline-compression true" or "-inline-dedupe true" 
to perform compression or deduplication on
the new data being added to the volume respectively.
Do you want to continue? {y | n}: y


Have fun at the games. And again: "Inline dedup SAS or NL SAS is plate Pooh" that has a reason why NetApp such hides and only for all Flash FAS systems will automatically unlock. If you have a FAS, which is equipped only with SSDs, I have no pain, however 😉


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