ONTAP Discussions

aggregate need?

saranraj456
5,902 Views

Why we need an aggregate seprately?

why cant we use a raid group directly?

Regards,

Saran

1 ACCEPTED SOLUTION

joostvandrenth
5,900 Views

Having evolved from a traditional volume (which can be seen as 1-1 relation between a RaidGroup and a volume) I see an aggregate as the physical to virtual transformation of storage capacity - it is the construct from which you can provision volumes.

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10 REPLIES 10

nigelg1965
5,868 Views

Put simply because there can be more that one RAID group in an aggregate.

Depends on size and type of disk, but with a large of small disks there could be several RAID groups (a RAID is the data and parity disks)

joostvandrenth
5,868 Views

I do not know why you would want to, but maybe traditional volumes are something to look into?

saranraj456
5,868 Views

no, i am generally asking the need and use of aggregate.....

joostvandrenth
5,901 Views

Having evolved from a traditional volume (which can be seen as 1-1 relation between a RaidGroup and a volume) I see an aggregate as the physical to virtual transformation of storage capacity - it is the construct from which you can provision volumes.

eric_barlier
5,868 Views

because it scales better? its more flexible to manage than a set of X disks. There are many reasons. Maybe we can approach this the other way around:

what is bad about using aggregates?

Eric

ashritha
5,868 Views

Hello ,

The reason is aggregate holds the raid group, aggregate is nothing but a raid group.

hope this helps!!

Ashritha.

satish_pamarthi
5,868 Views

if you start using by raid groups, then you have to create a number of raidgroups as per your space requirement.

In the same way, if you start using aggregate, there is no matter of how many raidgroups it is... still u can handle all the raidgroups in the same aggregate.

bondbhola
5,868 Views

Hi Saran,

To use the diskshelf you must bind the disk in aggrigate. you can' create raidgroup witout creating the aggregate.

Thanks,

Bhola Gond

bondbhola
5,868 Views

Below link will help you to understand the relaionship for disk-aggregate-volume.

https://communities.netapp.com/people/BrendonHiggins/blog/2013/02/03/disks-aggregates-volumes-qtrees-and-luns

saranraj456
4,914 Views

Frndz,

i got an answer already ,its one of my old post.

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