Disks are the fundamental unit of physical storage in clustered Data ONTAP and are tied to a specific cluster node by virtue of their physical connectivity (i.e. cabling) to a given controller head.
Data ONTAP manages disks in groups called aggregates. An aggregate defines the RAID properties for a group of disks that are all physically attached to the same node. A given disk can only be a member of a single aggregate.
By default each node has one aggregate known as the root aggregate, which is a group of the node’s local disks that host the node’s Data ONTAP operating system. A node’s root aggregate is created during Data ONTAP installation in a minimal RAID-DP configuration, meaning it is initially comprised of 3 disks (1 data, 2 parity), and is assigned the name aggr0. Aggregate names must be unique within a cluster so when the cluster setup wizard joins a node it must rename that node’s root aggregate if there is a conflict with the name of any aggregate that already exists in the cluster. If aggr0 is already in use elsewhere in the cluster then it renames the new node’s aggregate according to the convention aggr0_<nodename>_0.
A node can host multiple aggregates depending on the data sizing, performance, and isolation needs of the storage workloads that it will be hosting. When you create a Storage Virtual Machine (SVM) you assign it to use one or more specific aggregates to host the SVM’s volumes. Multiple SVMs can be assigned to use the same aggregate, which offers greater flexibility in managing storage space, whereas dedicating an aggregate to just a single SVM provides greater workload isolation.
Create a Aggr using System Manager:
--------------------------------------------
Step:1
Go to Cluster1 => Node cluster1-01 => Storage => Click "Aggregates",
It shows list of aggregates in that node owns. In aggr menu click "create"
Step:2
Now opens aggregate create wizard, click next,
Step:3
Here need to specify aggregate name and raid type, I'm going to specify aggregate name as "aggr_cluster1_01" and raid type is "RAID DP"
Step:4
Here it's shows aggregate details and select disk option, click "Select disks"
Step:5
Select the disk group from the table and specify the no of disks that you want to add to the aggregate.
I just selected only 2 disks, but for RAID-DP min 3 disks required, so here i'm selecting 8 disks,
Step:6
Review the details and click create,
Step:7
Aggregate "agg1_cluster1_01" successfully created.
Check the newly created aggregate in the aggregates menu,
Create a aggregate in CLI:
-------------------------------
Create a new aggregate using the "aggr create" command, with 6 disks,
Check the newly created aggregate using aggr show command,
That's it :)
Data ONTAP manages disks in groups called aggregates. An aggregate defines the RAID properties for a group of disks that are all physically attached to the same node. A given disk can only be a member of a single aggregate.
By default each node has one aggregate known as the root aggregate, which is a group of the node’s local disks that host the node’s Data ONTAP operating system. A node’s root aggregate is created during Data ONTAP installation in a minimal RAID-DP configuration, meaning it is initially comprised of 3 disks (1 data, 2 parity), and is assigned the name aggr0. Aggregate names must be unique within a cluster so when the cluster setup wizard joins a node it must rename that node’s root aggregate if there is a conflict with the name of any aggregate that already exists in the cluster. If aggr0 is already in use elsewhere in the cluster then it renames the new node’s aggregate according to the convention aggr0_<nodename>_0.
A node can host multiple aggregates depending on the data sizing, performance, and isolation needs of the storage workloads that it will be hosting. When you create a Storage Virtual Machine (SVM) you assign it to use one or more specific aggregates to host the SVM’s volumes. Multiple SVMs can be assigned to use the same aggregate, which offers greater flexibility in managing storage space, whereas dedicating an aggregate to just a single SVM provides greater workload isolation.
Create a Aggr using System Manager:
--------------------------------------------
Step:1
Go to Cluster1 => Node cluster1-01 => Storage => Click "Aggregates",
It shows list of aggregates in that node owns. In aggr menu click "create"
Step:2
Now opens aggregate create wizard, click next,
Step:3
Here need to specify aggregate name and raid type, I'm going to specify aggregate name as "aggr_cluster1_01" and raid type is "RAID DP"
Step:4
Here it's shows aggregate details and select disk option, click "Select disks"
Step:5
Select the disk group from the table and specify the no of disks that you want to add to the aggregate.
Step:6
Review the details and click create,
Step:7
Aggregate "agg1_cluster1_01" successfully created.
Check the newly created aggregate in the aggregates menu,
Create a aggregate in CLI:
-------------------------------
Create a new aggregate using the "aggr create" command, with 6 disks,
Check the newly created aggregate using aggr show command,
That's it :)
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