The spec information for FAS2040

[renqingrong]

I has some questions for FAS 2040

FAS2040 (active/active) Tech Spec announce that its Max. Number of Expansion Disk Drives =124

Q1: how many  DS14 disk shelves it can has?  if number is eight, only 8*14=112 FC disks.

       if number is nine, only 9*14=126 . no one is equal to 124 disks

Q2: I can not use NDMP backup for NAS data if FAS2040 is configured with more than 84 FC disks, for example 100 FC disks. right?

[ewerner]

Thanks for posting!

I can answer your first question: the 136 total spindle count can only be reached through a combination of the internal drives, DS4342 shelves, and DS14 shelves.

The math goes like this:

Internal = 12

4x DS4243 = 96

2x DS14 = 28

12 + 96 + 28 = 136

Or, just for the shelves:

4x DS4243 = 96

2x DS14 = 28

96 + 28 = 124

Does that help?

Ethan Werner

Technical Systems Engineer

NetApp

www.netapp.com

[renqingrong]

FAS2040 Max. Number of Expansion Disk Drives is depend on the disk type

for only FC disks, It should be 8*14=112 (  8 DS14 disk shelves )

for only SAS disks, It should be 4*24=96 (  4 DS4243 disk shelves )

For mixed FC and SAS disks, It should be 124 disks (4 DS4243+2DS14)

does it right?

[amiller_1]

Do you know if there's any possibility of the 2040 shelf support being adjusted to handle (5) DS4243 shelves? That would be almost perfect as would be 120 external disks + the 12 internal disks = 132 disks (only 4 away from the 136 maximum).

[RAFAEL_GUEDES]

Hey Ethan! Thanks for this very useful information!!

The maximum number of DS4243 shelves in a SAS bus is four for any FAS system, or it is only a restriction for FAS2040?

And in the case of DS2246, which has a maximum of ten shelves in a SAS bus, does this number also apply to FAS2040 ?

Thanks in advance!

[pascalduk]

The maximum of 4x DS4243 or 4x DS2246 shelves per stack is only a limitation for the FAS2040.

Higher end systems can do 10 shelves per stack.

[RAFAEL_GUEDES]

HI Pascal! Thanks for fast reply!!

Do you know any official docs from NetApp that confirm it? I need it to officialize a deal where we are beating against EMC.

[aborzenkov]

Standard system configuration guides have all information you need.

https://now.netapp.com/NOW/knowledge/docs/hardware/NetApp/syscfg/

[RAFAEL_GUEDES]

Very useful!!! Tks a lot!

[stratify_tc]

Please note that in Ethan's reply, while unstated, the max number of DS4243 shelves is 4 or 96 total drives.