aggregate need?

[saranraj456]

Why we need an aggregate seprately?

why cant we use a raid group directly?

Regards,

Saran

[nigelg1965]

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]

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

[saranraj456]

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

[joostvandrenth · Accepted solution]

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]

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]

Hello ,

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

hope this helps!!

Ashritha.

[satish_pamarthi]

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]

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]

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]

Frndz,

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