NAS200 My cooling mod

Discussion in 'Cisco/Linksys Network Storage Devices' started by adasch, Nov 15, 2015.

  1. adasch

    adasch LI Guru Member

    Hi,

    Because I'm very pleases how NAS200 work, I make decision for maximum upgrade and buy two disk Hitachi Ultrastar 2*2TB. In my house network, NAS200 cooperate as backup with main HP meida smart server EX470.
    Of course I use software attached to NAS200 called NTI shadow for backup family hd moves and photos. On new disks, full backup process should take about 7 days, but after three hours smart report near 58 degrees of Celsius.
    Hitachi specification inform about 60dC as maximum. This situation force me to improve cooling disks in NAS200

    some facts:
    OEM cooler 12V 3,7 CFM
    replacement 12V from sunon have 6CFM but it's small improvement
    I found fans from susnon's 5V 6 CFM but spec allow use 6V and I can expect 6+ CFM

    I make Decision to use parallel two sunons connected serial do power connector and leave OEM cooler for force flow air on second disk

    after all typical temperature is about 42-47 Celsius under work in six day of backup (temps can be read by command /usr/sbin/smartctl -A /dev/sda (b) )

    for create hole i just use dremel

    I use option 10mins for disk and fans but this function work life in own world.
    I can't find how to correct/improve work this function. Some times fans work 30 mins, some times few hours after spin down (EDIT; after replace empty battery clock, spin down and fan off works well )

    Some pictures from mod.
    WP_20151113_22_07_35_Pro.jpg WP_20151113_22_08_10_Pro.jpg WP_20151113_22_08_55_Pro.jpg WP_20151113_22_51_42_Pro.jpg WP_20151114_00_19_39_Pro.jpg
     
    Last edited: Nov 23, 2015
  2. mstombs

    mstombs Network Guru Member

    Isn't the NAS200 a bit old and slow to bother with now? Mind you I am still using an NSLU2....
     
  3. adasch

    adasch LI Guru Member

    for fast access I have HP smart server with upgraded CPU RAM and 3*2TB WD Green.
    NAS200 is very good device as independent device for backup. Speed is not important. Important is power consumption in sleep mode and save my most important files.
    If in my main server PSU brake down and damage mainboard,disks etc I can loose everything
    in this case, I have copy on NAS200.
    some about construction:
    I Buy NAS200 in dec 2007. Now he have 8 years * 365days *24hours = 70080 hours!!! (I should think about new PSU) It simple construction, no BGA chips, and no risk for brake joints what is typical in leadfree board where temperatures are change in time. capacitors look ok. My OEM fan have real ball bearings. After 8 year he still in grat condition. My colleague have model from 2009 and his fan have sleeve bearing

    where 5 years with 2*1TB seagate (konwn fatal series but I don't have problems with them) and 3 years with 1TB wg green and 1TB seagate. (smart report about some relocations and unstable sectors)
    Now I bought Hitachi (probably best hard disks). Smart count hour on power but generally disks sleeps

    Like you see I have trust for NAS200.
    Speed is not important but in this case only reliability, safety, and low power consumption are important

    p.s.
    Smart server is connected to UPS and he can automatically turn off when battery level drops to 50%. I think I should ask Jac, maybe he idea how force hp smart server to send signal to nas200 for shout down when smart server going off too.

    p.s.2
    below solution is absolutely not acceptable for me https://www.dc414.org/2012/01/modding-a-linksys-nas200-to-stay-cool/ it's ugly like skoda

    p.s.3
    few years ago i looking for electronic schematic without success. Maye some one have it?
    I think NAS200 can have more features (many components aren't assembled on PCB) but probably main goal has been lowest price and probably linksys make decision about resignation from some features.

    p.s.4
    most important files? I have HD moves with family, kids, football match with son. He play football in junior league from few years :) emotions much larger than final champions league :) I recommend for every one father :)

    cheers
     
    mstombs likes this.
  4. adasch

    adasch LI Guru Member

    few additional photos
     

    Attached Files:

  5. Still_Awake

    Still_Awake Networkin' Nut Member

    I just love this solution. Fans were the only design flaw in this device, too small, too noisey, too fast.

    It was good to see someone else using NAS200 like me for 24x7 constant archiving of vital data. I too am very happy with the electronic robustness of the design and low consumption.

    I use fw 3.4R79 and have a different solution to hot drives than you which uses no power and makes no noise!


    Re 1: Yes it would be nice to get the LAS200 to power down with a UPS signal. It needs a nut client? My solution so far is a big UPS and the NAS200, in standby can last many days on 4 16AH batteries.

    Re 2: Skoda no, that is more a Trabant I fear, complete with agricultural enhancements (soil, or... omg, is that poo?) I chose to remove all the fans from mine, remove the case and install the drives in a home-made cage (DD casings from an old server case). It is open air and now very dusty, but the drives are happy with lots of air around them- after all they are running very slow. I think slow drives, greens or even the new 8TB archive disks (will they work?) are the best as a NAS200 controller hardly stretches any SATA drive.

    Here it is on the floor, atm I am fiddling with it but it normally has 2 drives mounted inside and sits on the shelf. Oh yes, and I added a big heatsink to the ARM CPU (under the silver lid), to ensure it stays cool too:
    NAS200_cabrio.png
    The top of the old NAS200 case (with the PCB inside) perches on top like a machine from War of the Worlds- the SATA and power cables hanging down into the cages below, where the drives live free, but restrained.

    Re 3. I have no idea at all about a schematic. But keep those capacitors cool and they may last forever... but keep an eye on them in case they leak!

    Re 4. Important files, yes- we all need a backup! This or some other NAS (NAS4free is very good), all are important to have, but one needs a low power solution like this, or a time capsule for archival backup.

    PS. A note re large drives: In my experience anything bigger than 1TB should not be run in RAID 1 (mirror) as they will not rebuild reliably for long. You will know because you will hear clunking a few weeks/months after you install them. And there will be nothing wrong with the disks- it will just happen because of the sheer number of sectors and the chances of minor failures causing rebuilds that cannot finish successfully from a single stripe- big disks need multiple sources of truth as they have ever increasing numbers of errors as they get built larger.

    So if you aren't already, be sure to run yours in non-raid mode! If a drive dies, you simply recover the data and replace it- in most cases this is simpler than messing with any RAID solution, let alone a slow one!
     

    Attached Files:

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