WD Green + NV+ + Do they spin down or not?

[tormi]

Hi guys!

I would like to know if the WD20EARX harddrives (Western Digital® Desktop Green 2TB) will automatically spin down. I DO NOT want spindown on my Readynas!

Here is my system:
Model: ReadyNAS NV+ [X-RAID]
Firmware: RAIDiator 4.1.10 [1.00a043]
Memory: 256 MB [2.5-3-3-7]
Volume C: Online, X-RAID, 3 disks, 56% of 3687 GB used

BTW this is my SMART Information screen info (I have been copying alot of data the last days so it won't be representative for the future:
SMART Information for Disk 1

Model: WDC WD20EARX-00PASB0
Serial: WD-WCAZAE569609
Firmware: 51.0AB51

SMART Attribute 
  
Raw Read Error Rate 0 
Spin Up Time 6375 
Start Stop Count 9 
Reallocated Sector Count 0 
Seek Error Rate 0 
Power On Hours 59 
Spin Retry Count 0 
Calibration Retry Count 0 
Power Cycle Count 7 
Power-Off Retract Count 6 
Load Cycle Count 1150 
Temperature Celsius 19 
Reallocated Event Count 0 
Current Pending Sector 0 
Offline Uncorrectable 0 
UDMA CRC Error Count 0 
Multi Zone Error Rate 0 
  
ATA Error Count 0 

Extended Attribute 
  
Hot-add events 1 
Hot-remove events 1 
Lp stat events 3006 
Power glitches 0 
Hard disk resets 1 
Retries 0 
Repaired sectors 0 

If the answer is that my disk do Spindown will this solution work? --> http://rant.gulbrandsen.priv.no/hardware/readynas-wd-caviar-green

[HERBIEO]

Going by the SMART Information
Power On Hours 59
Load Cycle Count 1150
this shows the heads are parking roughly 20 times per hour which is quite a lot so i would say yes.
You could use WDIDLE3 to disable http://www.storagereview.com/how_to_sto ... th_wdidle3

[KydDynoMyte]

Or if you don't want to bother with having to take the disks out of the nas:

viewtopic.php?f=11&t=59700&hilit=wdidle3

[StephenB]

HERBIEO wrote:
Going by the SMART Information Power On Hours 59 Load Cycle Count 1150 this shows the heads are parking roughly 20 times per hour which is quite a lot so i would say yes. You could use WDIDLE3 to disable http://www.storagereview.com/how_to_sto ... th_wdidle3

Head parking is not the same as spin down. Spin down is done to save power. Head Parking is done whenever the drives are spun down, but it is also done when the drives are still spinning - it helps protect the drives from shock.

[mdgm-ntgr]

On the NV+ (v1) I'm not sure it'd be that easy to get WDIDLE3 running. Would require some testing to make sure it works well. Better to use a PC (in my opinion) to run WDIDLE3 on the disks.