FAS and V-Series Storage Systems Discussions

FAS2220 12 Disk

CHRIS_LAWRENCE

Hi

Just looking for peoples opinion on the following disk configuration for a new install.

Assign 9 disk  to controller A create raiddp aggr

aggr0 - 8 (6data-2 parity) 1 spare

assign 3 disk  controller B  create raid4 aggr

aggr0- 2 disk (1data-1 parity) 1 spare

Looking to maximse disk space whilst still keeping it fairly best practice.

2 REPLIES 2

resqme914

So basically the second filer is a hot standby?

We made a large storage purchase and NetApp "threw in" three "free" FAS2220 12-disk pairs.  With 12 disks for a pair of filers, they're basically next to useless.  By the time you take out two disks for spares, 4 disks for dp parity, you are left with 6 data disks (7 if you do raid-4 on one head like above).  We thought long and hard about how to distribute the disks, and we settled on evenly distributing them between the two controllers, so as to be able to take advantage of the processing power of each filer.  6 disks on each filer:  1 spare, 5 disk raid-dp aggr0.  We shrunk vol0 as much as we could to free up more space.

As much as we hate wasting disks with raid-dp, it makes upgrading firmware non-disruptive and that's why we use raid-dp everywhere.

CHRIS_LAWRENCE

Yes basically controller2 is a hot standby.

I think we've settled on

8 Disks on controller1 5 Data 2 Parity and 1 Spare

4 Disks on controller2 1 Data 2 Parity and 1 Spare

The main reason is the non disruptive firmware like you mentioned

Announcements
NetApp on Discord Image

We're on Discord, are you?

Live Chat, Watch Parties, and More!

Explore Banner

Meet Explore, NetApp’s digital sales platform

Engage digitally throughout the sales process, from product discovery to configuration, and handle all your post-purchase needs.

NetApp Insights to Action
I2A Banner
Public