H-P T5700: A Few Words in Praise of Something Small

One of my major mania’s is catching on. Josh Richards just blogged about trying Askozia on an H-P T5700 thin client. These are great little devices. I was so lucky to stumble into a source about 18 months ago. A major corporate concern was about to pay to have a few boxes of these little wonders “recycled” by Dell. A friend and I intervened and relieved them of that necessity.

At present I have three of these running in my home office.

  1. Astlinux 0.48 in production
  2. An Askozia testbed
  3. FreeNAS with SlimNAS

With a 1 GHz CPU and 256 MB RAM (more if you upgrade the one SODIMM ) they are reasonably powerful, certainly enough for a small Astlinux or Askozia installation.

HP T5700 Rear Panel
HP T5700 Rear Panel

The third unit is perhaps most interesting. FreeNAS is a NAS software based upon FreeBSD and the m0n0wall framework. Like m0n0wall it’s simple, just enough to do what you need and not a lot more. It runs great on the T5700. However, a NAS needs storage, a lot of storage.

T5700 Internals
T5700 Internals

The T5700 has an internal IDE connector that’s fitted with a 256 MB flash disk-on-module (DOM). You could swap that our for a 2.5″ HD with the right sort of adapter, but laptop hard drives have high $/GB and less than ideal MTBF.

The T5700 also has a number USB ports but these are USB 1.1…less than ideal for interface to portable hard drives. I was able to find the optional expansion chasis on Ebay for $20 each. This lets them take one standard PCI card, in my case a 4 port USB 2.0 card. Then I could connect a couple of external hard drives and…voila…cheap, silent, spacious NAS…with software RAID if you like.

One of the major uses for NAS around my home is music. I have a couple of Slim Devices Squeezeboxes as music playback for the home and office. These are outstanding devices! Truly change-your-life gadgets. They connect to your stereo and stream music off a PC server running a Perl based server software. It just so happens that Michael Herger has created a package called SlimNAS that installs the Slim Server software into FreeNAS. So this little box not only stores the music, it serves it up as well. All in <10 watts.

There in one little gotcha. You can set the BIOS to boot from a USB port, but it will only boot to the devices on-board ports. It won’t boot to a USB 2.0 port on a PCI card. This is minor. I built a 1 GB thumb drive with FreeNAS and SlimNAS, then added a pair of 250 GB HD in USB portable enclosures that I had sitting around. That’s 500 GB of RAID 0 or 250 GB of RAID 1 storage. Total power consumption < 25 watts. Ambient noise contribution to the room…none.

These are great little boxes!