upgrade 32bit aggr to 64bit

[TDUBB1234]

how do I upgrade a 32bit aggr to 64 bit? what are the steps and downtime?

[scottgelb]

With ONTAP 8.1, you add disks to grow the aggregate over 16TB and it will automatically convert in the background (no downtime) from 32 to 64 bit.  Growing over 16TB is the only supported method.  If you search this community you will see some posts of a diag mode in place method without adding disks but that is not supported (diag mode command).

You can also replicate from 32 to 64 with ONTAP 8.1 and have a quick downtime while you cutover to the new volume but if you are on 8.1 then the best solution is to add disks and convert the existing aggr for now downtime.

[aborzenkov]

It does not do this automatically, you have to explicitly say you want to convert when adding disks. Otherwise it just rejects command if size will exceed 16TiB.

[scottgelb]

System manager should give a popup they can click wen growing to convert. Do you use cli or system manager and is it ontap 8.1?

[aborzenkov]

CLI of course ☺

[TDUBB1234]

but im on  8.0.1P3. how do i convert to 64bit without upgrading to 8.1?

[radek_kubka]

Basically you can't.

What you can do, is to create new 64-bit aggregate and then migrate the data off the old one, e.g. via Qtree SnapMirror (VSM won't work unfortunately).

Regards,

Radek

[scottgelb]

Qtree snapmirror or Ndmpcopy if not on 8.1. It might be worth waiting for your upgrade. Then you can upgrade in place by growing the aggr or volume snapmirror too 32 to 64.

Sent from my iPhone 4S

[radek_kubka]

I see I need to add a signature to my posts: "Send from my (awesome) Android phone" 🙂

[scottgelb]

Reply to the email notification on a thread and it is from email

Sent from my iPhone 4S

Re: upgrade 32bit aggr to 64bit

created by Radek Kubka in Data ONTAP - View the full discussion

I see I need to add a signature to my posts: "Send from my (awesome) Android phone"

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[TDUBB1234]

what is besrt way to move my vnmware luns off this 32bit aggr to 64bit? create new 64bit aggr/vol/qtree/lun and svmotion the vms off the old luns or can i still use qtree snapmirror?

[scottgelb]

Storage VMotion would be a great way to do this...then you don't have downtime.

[TDUBB1234]

how do i qtree snap mirror between 2 qtrees? i have 2 luns on 2 different aggr

[scottgelb]

QSM creates a qtree on the target volume for you.. So you can mirror any source qtree (or non qtree data by specifying /vol/volname/-  ... the dash meaning non-qtree data as the source) and the target is always a qtree.  You specify the source /vol/volname/qtree or "-" and the target /vol/volname/qtree.. the target volume can have multiple qtree mirrors if you want.

But if VMware and the goal is non-disruptive 32 to 64 bit (and not ontap 8.1) then storage vmotion sounds like a much better fit.

[radek_kubka]

Just bear in mind Storage VMotion is a host-side operation, so with large VMs may be problematic performance-wise.

[fhauntsman]

Hi, I just receive this document from support after searching and searching, great doc..

In-Place Expansion of 32-Bit Aggregates to 64-Bit

Overview and Best Practices

Link= http://media.netapp.com/documents/tr-3978.pdf

Enjoy and hope this helps