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QNAP SS-439 Turbo Pro internals

December 20, 2008 1 comment
  • Small silver heatsink is for the Atom N270 CPU, black heatsinks are Northbridge (adj. CPU) and I/O?.
  • 4 SATA ports are on the riser card.
  • Flash rom (Apacer) has small microswitch (recovery mode perhaps?).
  • Only FAN1 header is used, the fact there are two makes me think this is also the motherboard for the TS-439 which has a PSU fan at the rear of it’s case.
  • Drive bays are approx 14mm wide (six UK 10 pence coins = 12mm), so with 12.5mm drives (eg. 1TB) little air could flow between the drives.
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NAS considerations

December 20, 2008 1 comment
I’d been searching for my ideal home NAS system, here were a few of my candidates.

In the end I plumped for the QNAP SS-439 because of it’s low power requirements and I had a few 2.5” disks to spare anyway. I voided the warranty almost immediately by opening it up, see here.

QNAP SS-439 Pro Turbo NAS Datasheet Website

++ Intel Atom N270 1.6GHz (3200 bogomips)
++ QPKG packages can be installed
++ Dual 1000Mbit
++ Native iSCSI support
++ Upgradable RAM (2GB) (see here for internal photos)
— QNAP are known violators of the GPL by not releasing kernel source code
— Atom CPU not fast enough for >18MB/s via SSH/SCP/SFTP.
— Atom CPU not fast enough for >50MB/s via FTP/SMB/AFP.
— 2.5” SATA drives only come in <=500GB sizes unless they’re 12.5mm.
— It’s not as expensive as the rest, with no drives it’s about £500UKP)
18W in use, at 14p/KWH for 24h*365days = £22.08 per annum
15W sleep, at 14p/KWH for 24h*365days = £18.40 per annum

QNAP TS-439 Pro Turbo NAS Datasheet Website

++ Intel Atom based system
++ QPKG packages can be installed
++ Dual 1000Mbit
++ Native iSCSI support
— QNAP are known violators of the GPL by not releasing kernel source code
— Atom CPU not fast enough for >18MB/s via SSH/SCP/SFTP.
— Atom CPU not fast enough for >50MB/s via FTP/SMB/AFP.
— Non-upgradable RAM (1GB)
— It’s even more expensive, again no drives (>£600UKP)
39W in use, at 14p/KWH for 24h*365days = £50.10 per annum
29W sleep, at 14p/KWH for 24h*365days = £37.25 per annum

Netgear ReadyNAS NV+ Datasheet Website

++ 1000Mbit
— Slow 32bit SPARC system
— It’s power consumption is too high.
— It’s expensive, even without any drives (>£500UKP)
55W typical, at 14p/KWH for 24h*365days = £70.66 per annum

Netgear ReadyNAS Duo Datasheet Website

++ Upgradable RAM (up to 1GB)
++ 1000Mbit
— High power consumption
— No Wake On LAN
— No native iSCSI support
— Slow 32bit SPARC system (IT3107 @ 186 bogomips)
35W in use, at 14p/KWH for 24h*365days = £42.92 per annum
27W typical, at 14p/KWH for 24h*365days = £33.11 per annum
12W sleep, at 14p/KWH for 24h*365days = £14.71 per annum

Cobalt Qube 3 Pro Plus Datasheet Website

++ I have two
++ Strongbolt2 ongoing development
— 512MB max. (possible to use 1GB, but >512MB uncachable)
— Slow AMD K6-III 450MHz CPU
— Only two PATA (max 120GB) disks
— 100Mbit
45W max, at 14p/KWH for 24h*365days = £57.81 per annum
33W typical, at 14p/KWH for 24h*365days = £42.39 per annum
22W idle, at 14p/KWH for 24h*365days = £28.26 per annum

DIY NAS
Atom 230 / 330 CPU (4W / 8W) (SingleCore / DualCore)
Core 2 Duo SU9300 (10W)
++ Possibly cheaper
++ Opensolaris
++ ZFS
— Difficult to ensure low power consumption
— No Atom PCI-E motherboards?

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