NCDA Study Part 2.3 – Data ONTAP: Configuration

As always download the newest version of the blueprint breakdown from here.

This section will cover plexes.  A plex is composed of RAID groups and is associated with an aggregate.  An aggregate will typically have one plex, plex0, and in the case of SyncMirror will have two plexes, plex0 and plex1.  In this case plex1 will be a mirrored copy of plex0.  For the blueprint’s concern, this section will cover just verifying via the CLI and System Manager where you can see the plex information in Data ONTAP.  Later, using SyncMirror you’ll be able to see both plex0 and plex1 in that configuration.

We’re going to perform the following labs in both the CLI and System Manager where the capabilities to do in both exist.

  • Verify

Verify Plex – CLI

To look at the plex information, you have to look at the aggregate.  When you run the command below you will notice how the hierarchy works in regards to plexes, aggregates and RAID groups.  You can use either of these commands to get the same results.

aggr status –r
sysconfig –r


Looking at this output, you will see that the Plex for aggregate 0 is online, normal and active.  You will also notice that the output starts with the aggregate, then plex, then the RAID group.  This aggregate is aggr0, with plex0 inside, and composed of rg0.

Verify Plex – System Manager

Using System Manager to look at the plex is fairly straightforward.  Once you open and connect to the Data ONTAP device, expand the device, Storage, click on Aggregates and then click on the Disk Layout tab at the very bottom.  This will bring up the plex view. cli_plex_verify_step2

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