Drobo

64 TB volume size for Drobo Generation 3?

As I understand, seven out of the eight current products now support a volume size of 64 TB.

This makes me wonder if and when there are any plans to implement a 64 TB volume size for Drobo generation 3?

hi patrikm2 it could be possible (unless of an actual hardware limitation somehow) though i guess if is it on the way that at least we have some more time until it is actually needed, (for example when viable drives larger than 8TB become available).

btw do you have one at the moment, or were you thinking of getting a gen3 or another model depending on the larger future support?

Yes, I do have a new Drobo 3rd gen which I haven’t loaded any disks into yet. It’s a replacement for my old Drobo 2nd gen which is getting kind of old (2009), and I don’t really trust hardware which is older than seven years.

It would be nice to be able to create a whole 64 TB volume instead of a small 16 TB volume right away, so I don’t have to re-create it later.

I also try to avoid it creating two 16 TB volumes, which will happen if I load it with 2 x 6TB + 2 x 8TB HD’s.

thanks for the info patrikm2, that is a good point about hardware.
i guess anything mechanical has a wear and tear factor (though with some of the solid state drives/memory sticks, even those are failing with cell charge states etc and those dont have any parts moving) :slight_smile:

as im not sure about any definite plans or dates about 64TB, its best to watch this thread as others may know, but one thing to bear in mind is that if your gen2 is getting on, it may be worth setting up the gen3 and copying the data (even as a backup) sooner rather than later.

also on an interesting note, (and while only according to 1 website storage vendor) its still pretty useful, is that i found out that a particular make and model of drives i was using (and still am using some) in my drobos, is the wd10eads, which seem to have an average lifespan of about 4.4 years according to here:
https://www.backblaze.com/blog/hard-drive-temperature-does-it-matter/
(i borrowed the link from jasonob i believe :slight_smile: and it has more info about other makes of drives too, which might be useful to bear in mind)

Interesting article. I’ve bought a couple of WD Red 8 TB which I’m quite happy with. They are very quit and keep very low temperatures.

Maybe someone from Drobo reads these posts and can answer if 64 TB volume size is in the pipeline for the Drobo 3rd generation? As I mentioned earlier, it’s the only unit from Drobo in production which still doesn’t support 64 TB volume size.

That is the average lifespan of the drives that have failed, which is not a particularly useful piece of data without knowing the overall failure rates. The average life of the WD Reds shown is very short. That could be because they have a lot of reds that have never failed (possibly because they are too new), because they have very few reds in their drive pool, or a combination of both. It is probably not an indicator that the average lifespan of a red is very low. Some failures are just infant mortality and not affected by any outside influence, while others are; and they do not seem to have excluded those types of premature failures. There should also be a caveat (which can be seen from the data presented, but is unstated), that they are talking only about temperatures that are within the manufacturer’s recommended operating range.

But we digress from the subject line topic. I would have posted this under the other topic, but it’s already closed.

thanks sandshark, you are right its just according to 1 website storage vendor and in their particular context.

I hate to be a wet blanket, but 20TB in single-parity RAID with slow rebuild scares the bejabbers out of me. When Drobo rebuilds, it puts maximum stress on the remaining drives. Suppose there are 16TB of data when a drive fails, that’s, what…two weeks of continuous hammering on the remaining 3 drives? In that situation, any error would fail the array.
I know, I know, the Gen3 is a great price and 8-bay appliances are much more expensive. I guess it will be fine as long as you’re prepared to recover from backup any time you blow a drive. I rsync my DroboPro to independent SATA drives every week or two in case the chassis pops off.

I will of course keep my old Drobo 2nd generation as a backup station for my Drobo 3rd generation. In case something happens during a rebuild phase.

It would still be nice to have some feedback from someone at Drobo with regards to whether there are any plans for the Drobo 3rd generation to support a 64 TB volume size.

I will of course keep my old Drobo 2nd generation as a backup station for my Drobo 3rd generation. In case something happens during a rebuild phase.

It would still be nice to have some feedback from someone at Drobo with regards to whether there are any plans for the Drobo 3rd generation to support a 64 TB volume size.

I will of course keep my old Drobo 2nd generation as a backup station for my Drobo 3rd generation. In case something happens during a rebuild phase.

It would still be nice to have some feedback from someone at Drobo with regards to whether there are any plans for the Drobo 3rd generation to support a 64 TB volume size.

I will of course keep my old Drobo 2nd generation as a backup station for my Drobo 3rd generation. In case something happens during a rebuild phase.

It would still be nice to have some feedback from someone at Drobo with regards to whether there are any plans for the Drobo 3rd generation to support a 64 TB volume size.

I will of course keep my old Drobo 2nd generation as a backup station for my Drobo 3rd generation. In case something happens during a rebuild phase.

It would still be nice to have some feedback from someone at Drobo with regards to whether there are any plans for the Drobo 3rd generation to support a 64 TB volume size.

I tried to make another post in this thread, but get this error message. Any idea who to contact?

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I tried to make another post in this thread, but get this error message. Any idea who to contact?

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thats a good point by rdo, and reminds me i need to revisit my backups and strategy to sort out some more backups.

(btw wet blankets are also useful, such as putting out a fire or to cool you down) :slight_smile:

So I just want to confirm that I can create one at least 40TB volume (minus the space for parity files which will probably bring the usable space to aprox. 30TB). I have a gen 3 and I want to use it to back up a NAS (4x10TB drives) that I purchased. I packed my drobo up when I moved in Aug 2020. It has four 4TB drives in it. If I can create the single 40TB volume I will purchase two 10TB drives and reformat my drobo as a 64TB volume (again, if I can do that) and a couple of months later I will purchase two more 10TB drives and put them into the drobo.

Does this sound like it would work?

@cptodd
If I’m reading correctly what you propose ought to be doable.

Please refer to the following articles:
Maximum Volume Size and Largest Size Drive
The Gen 3 appears in the second table.
And the linked article:
Drobo 5D/5Dt/Gen3/Mini: 64TBVolume Support

Gen 3s can only do 64TB with sufficiently recent firmware & creating a fresh disk pack, existing packs are stuck at 16TB unless wiped & started over.

Thank you SO SO MUCH for getting back to me. I think you have perfectly understood what I was asking for and you answered my query with great information.

To tell you the truth, you gave me better information than the person from Drobo (I assume it was a person from technical support) told me when he called me back (I called and left my question on voicemail on Monday and they told me that they would call me back). He told me that the largest drives that my generation 3 could take was 4TB and promptly suggested that I purchase one of their new $700 machines. Anyhow, I knew that that information was wrong so I searched for a Drobo community forum and I landed here and poked around until I found this thread. Too bad I didn’t do this earlier.

Again, thank you so much!

My Drobo Generation 3 have no problems with Western Digital Red 14TB HDs and 64TB volumes. Firmware is version 4.1.4.

My old Drobo Generation 2 (still working!) have no problems with Western Digital 10TB HDs. Firmware is version 1.4.2. The volumes on the G2 may not be larger than 16TB, though. And the rebuild times when adding a new HD is counted in weeks and not hours or days…