Hello,

 

 

I have another question. Since I'm going to buy a new hard disk to replace my f4. I was thinking to upgrade to the pro edition, so I can install a cache drive. But I've got still some questions about that. I was thinking to get the samsung 840 120gb SSD for cache drive. I'm also gonna run plex and crashplan on it since the logging keeps my array awake. And I can't use sleep because it waits 45 minutes after disk spindown. Is this a good idea to get this drive and to run those programs on that ssd cache drive.

 

My second question is a tricky one I guess . I assume my disk array is at idle /spun down when writing files to the server because all files go to the cache drive. So will my unraid server go into sleep while copying to my server (cache drive) since my array is spun down. (I'm using simple features to sleep the machine, after 15min spin down disk, 45 min later put server to sleep, it's the delay  after disk spindown), or shouldn't I focus on the delay after disk spindown (since the cache drive won't spin down" and just set an "Interval of network inactivity".

Or does it also check if there isn't been written/read from the cache drive? If so, it will also never go to sleep because plex and crashplan are logging to this crash drive, or am I wrong? I really need sleep , find it a waste to keep the server up 24/24 7/7 when not using it.

 

So: I want my server to go to sleep when not using it

and I don't want my server go to sleep when writing to the cachedrive, even if my array is spun down.

A. You don't need pro, only plus to install a cache drive.

B. Technically, the SSD never spins down because it has no platter, thus, it always reports itself as up. If you spin it down, it'll just stay up, there's no way to "spin it down", however, you may be able to do some modifications on simple features so it reports as spun down (And thus sleep)

C. No idea, never tried it, but, like B stated THE SSD IS NEVER SPUN DOWN. Just saying that it might complicate things (Simple Features thinking it's spinning, never tried it though)

D. Why don't you just power down the server instead of sleeping? Seems more logical to me.

i'm not powering down because I want it to be able to work with Wake on lan. Maybe I don't need a cache-drive. But I need a solution so my system is able to go in sleep and run plex. Now I've assigned plex to my disk 1 => plex logs all the time => array not sleeping => pc not sleeping.

 

I was thinking maybe I could mount a USB drive and set location for plex/ crashplan etc to this usb drive. But it isn't working . Can't mount the usb properly

 

btw: using  SimpleFeatures v1.0.11 and unraid 5 rc 11

i'm not powering down because I want it to be able to work with Wake on lan. Maybe I don't need a cache-drive. But I need a solution so my system is able to go in sleep and run plex. Now I've assigned plex to my disk 1 => plex logs all the time => array not sleeping => pc not sleeping.

 

I was thinking maybe I could mount a USB drive and set location for plex/ crashplan etc to this usb drive. But it isn't working . Can't mount the usb properly

 

btw: using  SimpleFeatures v1.0.11 and unraid 5 rc 11

 

Nearly every BIOS made post-2005 supports wake on lan from power off stage. Most are enabled by default, some you have to enable in the bios.

But It Would Take Longer To Boot Up. I Think I Only Want An Usb To Install Plex And crashplan On, So The Array Can Still Spin Down And Server Goes To Sleep.

 

edit: Can I also buy let's say a 60gb ssd, install raid on this and install plex / crashplan etc. on it and boot from this ssd. (Instead of the usb) So I don't have to buy a license but I won't have the cachedrive, but it will go to sleep/shutodwn after array spindown.

I know this is a pretty old post, but it seems relevant to update it since I have some info that seems useful to this topic in general.

 

I recently bought the 120GB Samsung 840 EVO (which I assume is the SSD referenced in the original post unless the "EVO" is different somehow).  I installed it earlier today as a cache drive and unRAID (v5.0.5) is reporting the SSD as spun down right now (and it stopped reporting temperature when it did so), so it appears it does have a low power mode that it goes into when instructed to spin down.