Drobo

5N Fan Replacement

My 5N fan went out 3 months after the customer care expired, how do I purchase a replacement part (fan) so I can replace it?

I don’t think there’s anything so special about the fan. Just find a decent quality one of the same size from one of the many online suppliers.

You must match airflow intensity when replacing fan.

To which I reply that any fan would be better than a failed fan or one that’s running slow on squealing bearings. I don’t think there’s anything so special about the fan. A decent quality one of the same size is likely to equal or exceed the airflow of the original.

These are specs for original drobo 5N fan.

Model: MEC0251V3-0000-A99
CFM: 75,00
Noise, dB(A): 34.0
RPM: 2200
V min: 6
V max: 13.8
Power, W: 1.90
Current, A: 0.161

Thank You

The most important spec, of course, is the distance between the mounting holes.

Let me know how you go cmcburney. My 5N has a fan on the way out as well. I think the bearings are gone. Started making noise approximately 18 months after purchase.

There is a big thread in the FS forums which talks about replacing the fan.

Came across this as well. Seems pretty easy. I assume the 5N is similar:
http://shankytown.tumblr.com/post/19822790286/replacing-the-noisy-fan-in-the-drobo-fs-no

I replaced a fan on my FS back in the day - it was a pretty easy project, all things considered. Only gotcha was a goofy non-standard lead that a lot of us had to splice in place (I found some adapters late in the game). I don’t know what the 5N uses, but I’d look around and see if anyone has cracked it open and taken pictures before you get in there.

[quote=“alanant, post:8, topic:141892”]
Let me know how you go cmcburney. My 5N has a fan on the way out as well. I think the bearings are gone. Started making noise approximately 18 months after purchase.

There is a big thread in the FS forums which talks about replacing the fan.

Came across this as well. Seems pretty easy. I assume the 5N is similar:
http://shankytown.tumblr.com/post/19822790286/replacing-the-noisy-fan-in-the-drobo-fs-no
[/quote][hr]
It’s not the same. I followed instructions on two sites and failed to get at the fan on the 5N. Have not seen anyone with 5N success posting.

[quote=“slogie, post:10, topic:141892”]

I opened a support ticket for a loud fan on my Drobo 5N and paid $49 for support of single incident. No response yet. We’ll see if that was money well spent or not.

Feels like a scam lol. My drobo fan started to make noise 13 month right after. Feels like they do this knowing it going to fail. So they want you to pqy yhem the OD price to extend warranty.

Would i be correct to assume this is a 120mm fan. Also what is the adapter someone mentioned.

This is what I got for my $49 paid to Drobo for single incident support. I’ve only reported the pertinent information and not the extraneous stuff about what OS I was running and whether the unit was plugged into a power strip or the wall.
DROBO>
For a fan issue there is are some things we can do to test for this issue.
Please power the Drobo down and remove the drives.
Once the Drobo has been powered down and drives removed, power the Drobo back on.
Does the Drobo’s fan still make an excessive noise?
If so then please power the Drobo down.
Please be sure that there are no obstructions around the Drobo and use an compressed air canister to clean out the Drobo and see if the noise has subsided.
If the Drobo is still making noise past this point, then the fan could be having issues, as the Drobo is out of warranty it is not able to be replaced.


ME>
I replaced the fan. All quiet now.


DROBO>
Thank you for the update
I’m glad to hear your issue has been resolved. I will close this ticket. Thank you and have a great day.


I was able to replace the fan myself using the instructions from
http://shankytown.tumblr.com/post/19822790286/replacing-the-noisy-fan-in-the-drobo-fs-no
with the addition of removing more screws that the 5N has over the FS.
However, I wanted to give Drobo the opportunity of helping me first. $49 and a week later the oft described poor support was demonstrated. I had not bought the extended warranty so the unit that I paid $500 for less than two years ago was to become ewaste. At that point I had nothing to lose from diving in with screwdrivers and pliers.

So which fan did you use? Do you have a link. I would like to replace my fan before it goes out completely.

I would treat a Drobo 5N replacement with extreme caution. I carefully removed the fan and replaced it with a similar Noctua fan (NF-F12) - but the Drobo didn’t start up the fan and I now have a Drobo which switches off due to overheating.

I’m using a desk fan to cool the enclosure whilst I copy files away then binning the Drobo.
I’m moving to a cheaper but more powerful QNAP NAS device (at least then I can easily recover my files if my NAS dies again).

The BeyondRAID format is too risky unless you can afford to just buy a new one (or pay for warranty cover)

That is why you should match airflow CFM and V min when replacing a fan.
Remember that drobo fan is controlled via voltage changes not PWM. Connect your fan accordingly!

Also remember that fan orientation must be such that air is blown out of drobo not in it.
If you change the orientation then temperature sensor receives cold air and doesn’t switch fan on or switches it to low mode.

[quote=“slogie, post:10, topic:141892”]It’s not the same. I followed instructions on two sites and failed to get at the fan on the 5N. Have not seen anyone with 5N success posting.
[/quote]
I just replaced the fan in my 5N and the instructions are the same …except for maybe the screw locations in step 4, the chassis are similar. I ordered the proper fan online, but in the interim I decide to install another fan with a lower CFM. I used tiny wire nuts to splice the connections.

The proper OEM fan is available here…
http://www.digikey.com/product-detail/en/sunon-fans/MEC0251V3-000U-A99/259-1472-ND/2021100

The Drobo5N fan is easy to replace, instructions with some photos are here:
http://blog.netscraps.com/tips/replace-drobo5n-noisy-fan.html

Thanks AzDragonLord for the fan link.

I tried this link and it is broken. I too am struggling with disassembling the case to get at the fan. I also tried this frequently-referenced link and only got as far as removing the 2 screws on each side. I already have a couple of fans from DigiKey. The service was great by-the-way.

An engineers’ reverse-assembly challenge is this case. Any help would be appreciated as I am down without my Drobo. The noise is unbearable.

I had the same problem but found a fan which works perfect

You have to fan with a low enough start voltage. Luckily I found a Noctua fan that works just great:

http://noctua.at/en/products/product-line-industrial/nf-f12-industrialppc-2000/

To fit the fan follow these instructions:

http://blog.netscraps.com/tips/replace-drobo5n-noisy-fan.html