2011-12-06 09:45 AM
I have a FAS2020 Dual Controller
While working on this Storage I assigned 9 Disk RAID-DP to Filer1 (Top) and 3 Disk RAID-4 to Filer2 (Bottom).
Now after reading and learning about this storage I decided to distribute the load and create 2 RAID-DP one in each controller and no hot spares to maximize space using:
options raid.min_spare_count 0
just to let you know I have no data at all in Filer1 which is aggr0 where vol0 for the root volume is presented.
so is there a way to remove 3 disks from my Filer1 and assign them to Filer2? by command line or something.
I know I can remove the current spare from Filer1 by
disk remove_ownership ....
but what about the other 2 Hard Disks?
thanks a lot
Solved! SEE THE SOLUTION
2011-12-06 10:08 AM
Unfortunately not, once disks are assigned to an aggregate, the only way to get them back is to destroy the aggregate and build everything again. As you don't have any data in it, this is less of a problem, but not the solution you were hoping for.
2011-12-06 10:14 AM
You have to options.
2011-12-06 10:22 AM
You have to take into account that when you create an aggregate, you are striping all of those disks as part of one large container. Each smaller part has been allocated to a part of the larger whole. If you pull out some of the smaller bits, you have to rebuild the whole. This is no different than a standalone server with a RAID controller.
2011-12-06 11:15 AM
Maybe I will go the DP to RAID 4 way.
I was looking for something else about netapp and found this
Maybe I will be doing that....basically from scratch
just Please give me your inputs for RAID 4 and RAID DP with each 6 disks I posted above
2011-12-06 11:16 AM
by the way guys any difference of advantage of using RAID-DP over RAID-4?
RAID-DP , 6 Disks each controller
no hot spares
8 Disks for Data
RAID-4, 5 Disks each controller
1 Hot Spare each controller
8 Disks for Data
any input? thanks
2011-12-06 04:46 PM
I was thinking if going from scratch using Control+ C menu and 4a option will set everything to default? 4 and 4 disk for each controller?
(1) Normal boot.
(2) Boot without /etc/rc.
(3) Change password.
(4) Initialize owned disks (4 disks are owned by this filer).
(4a) Same as option 4, but create a flexible root volume.
(5) Maintenance mode boot.
2011-12-07 05:10 AM
With no user data, that is the way I would go. Configuring the filer again would not be enough to warrant my changing raid types, changing disks around, moving the root vol, changing the raid type back.