2017-03-29 08:06 PM
We have FAS8060 running 8.3.2 CDOT. We have two stacks , Stack A have 5 shelves 30-34, Stack B has one shelf 40. They are exactly the same shelf model and speed and the disks are also the same. I want to combine them to free up the SAS port. Im guessing this will require downtime? I am thinking, re-id shelf 40 to shelf 35 then add to Stack A. I just need to know if downtime is required.
2017-03-29 08:43 PM - edited 2017-03-29 08:44 PM
Downtime is not needed. You can hot-add a SAS disk shelf to an existing stack of supported SAS disk shelves.
Refer the sections below in the link: https://library.netapp.com/ecm/ecm_get_file/ECMP1119629
Changing the disk shelf ID page 10
Hot-adding a SAS disk shelf page 12
2017-03-29 08:46 PM
If you want to change shelf ID, then yes, downtime is required.
If you just want to merge stacks, a takeover/giveback/takeover/giveback cycle is required.
If the above sequence is confusing, I encourage planned downtime, to avoid unplanned downtime.
2017-03-30 04:50 AM - edited 2017-03-30 04:55 AM
In my opinion I prefer to do a quick downtime windows
- First plan very well the new SAS and ACP cabling, send ASUP to know your old configuration, then stop applications, disable cluster and halt filer.
- Wait until LOADER prompt on both nodes
- Make new SAS and ACP cabling
- Set new shelf ID and restart shelf to commit the change
- On both nodes from LOADER prompt tipe "boot_ontap menu"
- in 1-8 menu select option 5
- Validate new shelf ID change and disk showing correctly
- Then halt, and boot_ontap
- When filer comes online enable cluster and validate cabling
- Restart Applications
- Send new ASUP ending downtime windows.
In my opinion is the more secure and reliable way to make the work you want.