2016-09-13 05:09 AM - edited 2016-09-13 05:11 AM
We're planning to buy a new Shelf to replace two older ones (DS4243 with 24 1 TB disks and DS4246 with 24 1 TB disks) on a FAS2040.
I want to buy a DS4246 with 24 4TB disks.
Now, there's a problem:
The System Specs tells me that only 136TB total raw size capacity is supported.
Currently we have 60 (12 + 24 + 24) * 1 TB drives installed.
When I add now a DS4246 with 24 4TB disk, the maximum raw capacity has exceeded (12 + 24 + 24) * 1TB + 24 * 4 TB = 156 TB).
The I've read the max raw capacity depends on the used ONTAP version (136TB max raw capacity for 7.3 & >400 TB for 8.1).
We have ONTAP 8.1
Now, I'm really confused....
Here are my questions:
1. How much is the real max raw capacity and max disk count on a FAS2040(1 controller) with Data Ontap 8.1 (7-Mode)?
2. Can I add the shelf to the existing loop, migrate the current data onto a new aggregate and then remove the older shelves?
3. The FAS2040 has only one SAS port, so a "loop degration" will definitely have an impact. Do I lose a formerly created aggregate (the new one from the 24 4TB shelf), when I break the loop, remove the older shelves and replug the shelf (the one with 24 4TB disks) to the FAS2040?
Thanks for an reply,
2016-09-14 08:27 AM