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Drobo 5D never spins down
01-02-2013, 03:48 PM
Post: #11
RE: Drobo 5D never spins down
hi Zathrak,
is it that your drobo goes into standby mode, but the fans are still always spinning (to cool it down)?

also, if you and diamond are on a mac, maybe theres something with that particular os version?
(i would have suggested a faulty temperature sensor at first, but if you have swapped the chassis already, then aside from firmware possibilities, it might also be the mac version.)

unless im mistakend, the 2 constants so far seem to be the drives used, and the mac os.
if you have any more details about those, it might help spot something.

have you tried putting it into shuttdown mode (or unmounting if needed on a mac) and then later removing the cable from the mac? does it still remain on?

and have you been able to try the unit on a windows machine?

that picture of the melting plastic doesnt look good - if that has only taken place on one of the units (assuming the 2nd one), what was the problem with the 1st unit?

(btw i have XP home SP2, a Drobo v1 with 2x 1TB/2x 1.5TB WD greens, & a bkp Drobo v2 with the same + a DroboShare: unused)
& a DroboS v2 with 3xWD15EADS &2x1TB in DDR mode on win7, & a drobo5D (all usb)
  • btw i did a sustained (write) operation for about 6 hours, and got 13.2MB / sec ...objection? "sustained" :)
    (16.7MB/s on a v2 & 47-96MB/s drobo-s)
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01-02-2013, 03:51 PM (This post was last modified: 01-02-2013 03:53 PM by bhiga.)
Post: #12
RE: Drobo 5D never spins down
65 degF is definitely cooler than average living environment!

Yes, I would think that the 5D, being a performance-oriented unit, would at least be able to handle a full load of 7200 RPM drives, if not 10,000 RPM drives.

My Drobo S and Drobo Gen 2's aren't speed demons but they sit in a semi-enclosed space (Salamander Designs Syngery cabinet with ventilated doors and extended back) - the Gen 2's have a full load of 3 TB WD Green drives and they get nowhere near "cook" temperature.

Granted, the WD Green drives are low-heat/low-RPM, so they put out significantly less heat than any 7200 RPM drive.

What make/model drives do you have? (Not that it really should matter, just curious)

--Brandon | WHS2011+Drive Bender/2x Drobo v2/Drobo S G1/ Drobo S G2/Transporter
Drobo provides fault-tolerance, it's NOT a substitute for regular backups.
Drobo Best Practices - Official and Community-sourced.
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01-02-2013, 10:11 PM (This post was last modified: 01-02-2013 10:13 PM by Zathrak.)
Post: #13
RE: Drobo 5D never spins down
@Paul: I have confirmed that if I can put the mac in sleep mode, the drobo will eventually go in to standby mode where the power light will turn yellow, all others turn off, and (I'm guessing) that the fans keep spinning until the drives cool down at which point the fan and the drives seem to "spin down" and remain cool. I think it's completely possible that it doesn't like my Mac OS 10.8.2 because I tried 3 Drobos on 2 macs, both running 10.8.2. I'm not so sure about the drives though, as I've used a total of 10 HDDs in 2 Drobo 5Ds in different disk packs and found the same issue remained (see below). I did try unmounting the volume but found that all drive bays remained active (green lights) / no standby mode after waiting 30min. In previous testing, unplugging the interface cable did eventually put it in to standby mode. I expect this behavior would continue, however I didn't yet test the unmounting + removing the cable in that order. I'll give it a whirl though tomorrow evening. All ideas are good to try. I didn't really give windows a change, but I do have a Win 7 boot camp partition...perhaps I'll give that a shot too tomorrow. Great ideas! You're also correct, it happened on Drobo #2. The problem with #1 was a loss of confidence in the unit. The drives got very very hot, the disks weren't spinning down, etc. So I RMA'd it for #2 which showed essentially the same symptoms...until the drive bay doors melted off. Now we're on #3.

@Bhiga: Yeah, pretty much I'm hearing that there's no reason it should be as fussy as it's being from what we can tell. It sounds like yours are in a slightly less environmentally "ideal" environment than this guy is.

Drobo #2 (which was used for testing in the middle of this headache) had the following configuration with drive models:

Bay 0 - 3TB Western Digital / WD30EFRX-68A
Bay 1 - 3TB Western Digital / WD30EZRX-00M
Bay 2 - 3TB Western Digital / WD30EZRX-00M
Bay 3 - 1TB Western Digital / WD1001FALS-4
Bay 4 - 3TB Western Digital / WD30EZRX-00M
*All with 64MB Cache @ 5400RPM except Bay 3 @32MB. The 4 x 3TB WDs are "Green" drives supposedly.

Drobos #1 and #3 were the "permanent" disk pack with data and were configured like this:

Bay 0 - 3TB Seagate / ST3000DM001-9YN
Bay 1 - 3TB Hitachi / HDS72303
Bay 2 - 3TB Hitachi / HDS72303
Bay 3 - 3TB Hitachi / HDS72303
Bay 4 - 3TB Hitachi / HDS72303
mSATA - 64GB Crucial / M4-CT064M4SSD3
*All with 64MB Cache @7200 RPM excluding the mSATA of course.
Also, here's the summary email I sent to Drobo Tech Support to ensure everyone was on the same page if you're looking for a little light reading. ;-)

Drobo #3 doesn't spin down based on the drives being excessively hot after
touching the outside of the drives and feeling them spin at full RPM
(identical feeling to when they're on and in use). If I shut down the
computer or pull it's thunderbolt or USB connection for a period of time,
usually 15 minutes or so, it will go in to standby (yellow light for power
light indicator, no other lights) however the drives still spin for quite
some time. I'd like to provide you with another experiment result I found
just last night as well as a summary to bring us both back to the same
page.

Last night, the drives were blazing hot but not enough to damage the drive
bays. Since we can't seem to get the drives to ever spin down via Drobo
Dashboard, I was curious to see if I could mimic this by forcing the mac to
go sleep and see if they spun down then. I did verify that if the Mac
successfully went to sleep and remained there, the Drobo would follow suit
and go to standby, albeit with the drives still spinning for an unknown
amount of time (though longer than 15min). I did this test at the end of
the night last night with the drives quite hot. Once I verified that both
were successfully "sleeping/standby," I figured if by this morning the
drives were room temperature or less, then we could call it a success. This
morning, the drives were indeed significantly cooler. This more or less
confirms that the Drobo *can* go in to standby, however I can only get it
to do this when I can force the mac to go to sleep (which isn't how I
understand the Drobo Dashboard Spindown option to work). It also might
interest your team to know that while testing this, I could only get the
mac to go to sleep after unchecking the "wake for network access" box
within energy saver preferences on the mac. This box does need to be
checked as I often remote in to the machine and also access it within the
network for video playback and the like and need its content to be
available. Shouldn't the Mac be able to be on 24/7 and the Drobo be able to
spin down on its own according to it's usage agenda but allowing the unit
to always be "turned on"?

The last little test I did was to ensure that there was NO possibility of
data read/write activity on the Drobo that would prevent it from spinning
the disks down. I decided to "unmount" the Drobo volume from the Mac which
essentially left the Drobo technically powered on and plugged in via
Thunderbolt but with absolutely no data transmissions occurring for 30
minutes...the drives still didn't spin down. Interesting...what do you take
from this?

Here's a quick summary of everything I've tried that I can think of at the
moment:

Drobo #1:

-Running original firmware
-Running new drives with nothing prior on them, 1 x 64GB Crucial mSATA SSD,
4 x 3TB Hitachi, 1 x 3TB Western Digital, all HDDs with 64MB Cache @ 7200
RPM.
-Environmentally sound location, nothing around the sides or top of the
Drobo, sitting on a wooden surface with an ambient room temp of 65 degrees
fahrenheit.
-The Drobo Dashboard is set to spin down at 15min.
-No data or read/write activity was active based on the blue indicator
light at the bottom right of the unit for hours at a time.
-Host iMac running latest version of Mountain Lion (OS X 10.8.2), connected
via Thunderbolt
-Loss of confidence with standby mode, drive temps, etc. (RMA)

Drobo #2:

-Everything is the same as above with the following exceptions...
-The firmware was updated to the latest version that came out (first update
available)
-iMac was turned off completely one evening, hooked up to Drobo via
Thunderbolt which was powered on and by morning, the door bays melted off
(suggesting that it never went in to standby but this isn't fact)
-We took out the mSATA card, verified that this made no difference
-We tested 1 x Hitachi and 1 x Western Digital to see if it would go in to
standby with the computer off. It would if I recall correctly, displaying
the yellow power light, however the drives kept spinning
(-Sent back via RMA on 1/2/2012)

Drobo #3:

-Migrated disk pack to this Drobo, same drive bay locations...same settings
as above...still wouldn't spin down after 15min
-Replaced Western Digital 3TB with a brand new Seagate 3TB (same specs)
-Tried using USB 3.0 instead of Thunderbolt, same results
-Hooked up to another host (Mac Mini), same issue
-"Unmounted" the Drobo volume entirely for 30min to ensure no data
transmission, still no spin down
-Was able to get it in to standby once the mac mini was forced to sleep and
remain there...eventually cooling the drives overnight or so it seems (Mac
required unchecking "wake on lan" option to sleep)
-Tested a new mixed disk pack with no data at all on Drobo #2, 15min
spindown selected in dashboard, as long as it was plugged in to thunderbolt
or usb, it wouldn't spin down or go in to standby (assuming the mac wasn't
sleeping, which it wasn't)

My guesses:
-It's not the disks: Being that we've used 2 entirely unique disk packs
-It's not the mSATA card: Issue persists on both Drobos, one with the mSATA
and one without
-It's not the data on the disk: Drobo #2 was used for testing a brand new
disk pack with no data and still failed to spin down
-It's not active data transmissions: The Drobo volume was "unmounted"
completely for 30+ minutes and it still wouldn't spin down or go in to
standby
-It's not the preferred interface: It happens on both USB 3.0 and
Thunderbolt 100% of the time
-It's not the Mac itself: The issue happened on two different Macs (though
it could be a Mountain Lion issue as they both run Mountain Lion?)
-It's not the firmware of the Drobo: During the course of this headache,
the firmware was updated from original to the latest
-The only way I've been able to activate standby mode on the Drobo at all
besides shutting the Drobo off completely is by shutting off the computer
attached to it or disconnecting it from the Mac (although the disks seem to
keep spinning despite the yellow power light)

Zathrak

Drobo 5D | 64GB Crucial m4 SSD | 5 x 3TB Hitachi | Late 2012 iMac Intel Core i7 3.4Ghz, OS X Mountain Lion via Thunderbolt
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01-03-2013, 11:23 AM
Post: #14
RE: Drobo 5D never spins down
Have you tried making a new user account, logging into it and seeing if it goes to sleep?

That would be the first thing I'd try to rule out configuration/software issues in your main account.
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01-03-2013, 11:46 AM
Post: #15
RE: Drobo 5D never spins down
@Sszyszka: Great point. Yes I did try this effectively when I brought it to a new mac.

Zathrak

Drobo 5D | 64GB Crucial m4 SSD | 5 x 3TB Hitachi | Late 2012 iMac Intel Core i7 3.4Ghz, OS X Mountain Lion via Thunderbolt
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01-03-2013, 11:51 AM
Post: #16
RE: Drobo 5D never spins down
I understand you tried a different Mac, but was it a user account that was completely fresh? I have many macs and am in the habit of installing the same utilities and configuring the settings on each similarly. Some of them have even been migrated form previous installations, adding even more variables into the mix.

Unless the new mac was a completely fresh setup, then the only way to rule out software/configuration is to create a new account.

If the new mac was a completely new setup, then obviously ignore me. :-)
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01-03-2013, 12:00 PM
Post: #17
RE: Drobo 5D never spins down
In fact, I just bought the other mac (mini) just last week and migrated no data/apps/etc. :-)

Zathrak

Drobo 5D | 64GB Crucial m4 SSD | 5 x 3TB Hitachi | Late 2012 iMac Intel Core i7 3.4Ghz, OS X Mountain Lion via Thunderbolt
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01-03-2013, 12:02 PM
Post: #18
RE: Drobo 5D never spins down
Cool. That is pretty definitive. :-)
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01-03-2013, 01:44 PM
Post: #19
RE: Drobo 5D never spins down
I also have noticed on my new 5D that it does not sleep completely. Not that it bothers me but i can second this issue.


Normal Running

[Image: img-0254.jpg]

When i shut down or put the computer into sleep no matter if it is connected to the MAC via thunderbolt or usb or the PC via usb the drobo goes into sleep mode as it should.

[Image: img-0255.jpg]

But you can feel and hear the fans and possibly the drives just spinning in the unit and continue to run. This is not a heat issue room is always between 65 and 70 Deg and since i can shut the machine down at 6pm and come back to it at 9am and its still humming which left it plenty of time to cool.

I have 5 3TB WD RED Drives with a crucial 256mb SSD. The Reds are designed to run all the time so i am not worried but it is an issue that is there. And its the Drobo not the machine attached since it happens no matter what machine is using the Drobo the MAC via thunderbolt or usb or the PC via usb.

[Image: screen-shot-2013-01-03-at-12-37-11-pm.png]
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01-03-2013, 02:04 PM
Post: #20
RE: Drobo 5D never spins down
VERY interesting and helpful feedback and images Masc. Well at least this adds some validity to the issue.

Zathrak

Drobo 5D | 64GB Crucial m4 SSD | 5 x 3TB Hitachi | Late 2012 iMac Intel Core i7 3.4Ghz, OS X Mountain Lion via Thunderbolt
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