Hello,
DS 412+
PLex V 1.4.2.3400
DSM 6.1
Plex worked for years without any issues.
Since about two month, even with DSM 6.0 and previous Plex versions, synology do not put discs in sleep mode any more.
I tried to stop Plex -> the discs went in sleep mode as expected. However when Plex is running -> no way.
Is there someone around having same issue or even a sloution to fix that ?
There is no way to put PMS to sleep completely. You should also understand a NAS-rated drive is designed to run 24/7/365. Also, hard drives can only handle about 300,000 load-unload cycles before they wear out. Every time the drive spins down and back up, this counts as a cycle. If the HDs are set to turn off after 5 minutes, this can cause up to 288 cycles per day. This would result in the drive failing in just over 3 years.
OK,
Starnge, because it worked just fine some time ago WITH Plex installed on it.
I use Plex, maybe, once every 2-3 weeks, that would be 1 cycle every two weeks. I´m fine with having to replace my disks every 11500 years, can you please stop PMS from preventing my NAS from hibernating as it was before?
Turn off ALL automatic updating / searching of your library.
PMS will go quiet.
Not so AFAIK, since PMS do logging when checking for still been online, and logs are stored on disk, and that part of logging can’t be disabled.
AFAIK, that what OP saw, is sadly the plain fact 
Thanks Dane22… Forgot that part. I stand corrected.
I would like PMS to allow my Synology to sleep. I just got the NAS assuming PMS would run similar to PMS on my mac mini (which does sleep). Please see if there is a way that you can make Plex more environmentally friendly. 20watts times 24 hours times 365 days time 1000s(?) of PMS servers equals a lot of wasted power each year.
@tfjunk said:
I would like PMS to allow my Synology to sleep. I just got the NAS assuming PMS would run similar to PMS on my mac mini (which does sleep). Please see if there is a way that you can make Plex more environmentally friendly. 20watts times 24 hours times 365 days time 1000s(?) of PMS servers equals a lot of wasted power each year.
if the NAS consumes 20 watts for 365 days of the year,
Kinda missing my point.
I’m not talking about money or my costs. I’d like to lower my power use, period. Help make the planet better for your kids and mine.
You forgot one key multiplier. You’ve probably got stats on the number of Plex installs on Synology’s. Multiply your numbers above by all the PMS installs and see the total kWh number get bigger (much bigger if Plex is popular).
And then multiply the kWh by the average carbon emissions on the grid.
This is all the wasted money and wasted emissions that Plex Co. could prevent.
Waste is waste – not helping anyone and, in the case of emissions, hurting everyone.
[Quick comment about my initial 20watt number: this is the rough savings in power between On and Hibernation for my 4-bay NAS. So the $26.28 is Savings, not Operating Cost. I wasn’t clear in my initial post. Also, the difference in wattage would likely be bigger for the larger Synology models.]
Sadly the way PMS works, since it at scheduled intervals checks that it’s public address hasn’t changed, updates libraries, check connection to plex.tv is still valid etc.
When doing all of that, it’s reading the preference.xml file from the file system, the database, as well as write to the logs
Above sadly can’t be disabled.
And when said, running a disk 24/7 instead of going into sleep, most likely makes the disk last longer, since power up of the disk to often really puts more stress to the spindle engine than just keep it running
/T
Seems like there could be a mode or settings that isn’t this aggressive. For instance, I just checked and most of the Scheduled Maintenance tasks run from 2am-5am (default settings). Why couldn’t Plex just wake up once per day, do everything you listed, and then sleep for 21 hours – instead of preventing sleep all the time?
I understand the wear on the drives, but disagree with the estimates above that use 5 minutes as the spin up/down interval. I would think it would be a lot less often for most home NAS users. e.g., spin down 20 minutes after morning music stops (inactivity), and then spin back up in the evening when someone gets home.
Consider:
300,000 load cycles (mean disk life) at 12 times per hour ( sleep after 5 minutes of idle ):
12 up/down per hour * 8760 hours/year = 105,120 head load cycles/year
The drive would be dead within 3 years
ChunkPA – I feel like you didn’t read any of my posts – you just posted your original post again.
I don’t really care about wear, and I think the 12 cycles/hr is bogus. Something like 3 cycles/hour is the Synology default, and that assumes a pretty weird use case (like only accessing for 1sec every 21mins). And the power savings over three years would buy a bigger HD at the time it dies (though my drives would last ~9 years because 12cycles/hr isn’t reasonable.)
Most importantly, it totally disregards the other post that simply asks: How is Plex Co. part of the solution, helping reduce wasted money and energy?
We don’t think you’re reading us.
You can’t tell PMS to stop writting to the disk.
Sorry, but as Dane22 explained, that’s how PMS works. It checks your connectivity to the internet, keeping basic logs of the activity as it does. It cannot be turned off.
What you describe is you want a NAS without the HD’s turning. Why not get SSDs instead? Problem solved?
I see you’re point about SSDs. Of course cost/value mean they won’t work for most people, but good point – there would be energy savings.
I replied to Dane22’s comment about “that’s how Plex works” with a question about why does it need to do it so frequently. Why does it need to check into the internet so often? (And why log this at default logging mode?) I understand that it can’t be turned off right now, but this code isn’t set in stone.
I know my public IP doesn’t change (basically ever). I have all my PMS settings (that I can control) set to run as infrequently as possible ((not every 5 minutes). Couldn’t PMS be less aggressive? For instance, couldn’t it only log failures?
TIA
No. It is what it is.
@ChuckPA said:
No. It is what it is.
Well, it was not like this before, you keep adding functionality that some of us just don’t want and forcing our systems to be awake all day, great job!
In my case I just log into my nas when I want to use Plex and start the server, the day after when I wake up I stop it again and wait until the next time I want to use it (which can be once or twice a month)
Every time the log files are written to, the disk MUST spin up.
Additional functionality has nothing to do with it.
