Author: Paul Maunders

Testing out wordpress for the iphone

This is my first post using my iPhone. I’ve installed the wordpress app and now I’m typing on the phone itself!

First thoughts: it’s great! I was a little concerned that the iphones spell checker wouldn’t work but it does (although not in the post titles).

I’ve tried to attach a photo of brendan so let’s see if that works…

iPhone on O2’s Simplicity Tariffs – £25 a month

My brother has just given our dad his old 2G iphone after upgrading to the 3G one. Initially I thought he would have to pay £35 a month for the iPhone tariff, but it turns out that you can use the old iPhones with any o2 tariff.

There are a number of sim-only Simplicity tariffs, that have short term 30 day contracts, and these start from £15 per month. You can then pay £7.50 extra a month for unlimited data, or £10 a month for unlimited data + wifi.

In the end he opted for the Online 15 tariff with the web+wifi bolt on. This gives him:

  • 200 minutes
  • 400 texts
  • Unlimited O2 to O2 calls
  • Free voicemail
  • Unlimited data + wifi

The only thing he doesn’t get his visual voicemail, but not bad for £25 a month.

Installing the Brother MFC-9840CDW on Ubuntu

To install a Brother MFC 9840 CDW printer on Ubuntu, you must:

  1. Download the LPR driver from here
  2. Download the CUPS wrapper driver from here.
  3. Install them.

You can use these commands:


wget http://solutions.brother.com/Library/sol/printer/linux/rpmfiles/lpr_debian/mfc9840cdwlpr-1.0.0-7.i386.deb&lang=English_lpr
wget http://solutions.brother.com/Library/sol/printer/linux/rpmfiles/cups_wrapper/mfc9840cdwcups-1.0.0-7.i386.deb
sudo mkdir /var/spool/lpd
sudo mkdir /usr/share/cups/model
sudo chmod 777 /usr/share/cups/model
sudo dpkg -i --force-all --force-architecture mfc9840cdwlpr-1.0.0-7.i386.deb
sudo dpkg -i --force-all --force-architecture mfc9840cdwcups-1.0.0-7.i386.deb
sudo aa-complain cupsd

UPDATE – 22ND NOVEMBER 2008 – ALTERNATIVE METHOD
One blog reader, Hans, has commented that you can just use synaptic to install the printer drivers. I haven’t tried this myself so I would be interested to hear how others get on using this method. Please post a comment if it worked for you!

  • Open up Synaptic Package Manager.
  • Search for 9840 and install the packages.
  • Set it up under System > Printers.

SATA hard drives for our coraid ATAoE SAN

We are looking to purchase some drives for a Coraid SR1521 storage appliance. Coraid maintain a list of compatible drives on their site, so it would be wise for us to stick to drives that have been tested without problems.

Hard drives comparison

  • All disks shown are 1TB SATA drives.
  • MTBF is the Mean Time Between Failures
  • AFR is the Annualised Failure Rate. This is the % of the population of these drives that are likely to fail in an average year. I’ve calculated this myself based on 24/7 usage (e.g 8760 / MTBF * 100).
Manufacturer Model Type Part Number MTBF AFR Price (inc VAT)
Seagate Barracuda ES.2 Enterprise ST31000340NS 1,200,000 0.73% £165.59
Seagate Barracuda 7200.11 Desktop ST31000340AS 750,000 1.17% £99.99
Samsung Spinpoint F1 * Desktop HD103UJ 600,000 1.46% £89.85

Notes
* The Samung Spinpoint F1 has not been tested on a Coraid device yet.

Tom’s hardware have a comparison of SATA disk transfer rates.

X-bit labs have an in-depth comparison on 1TB disks.

Samsung make an interesting point in their spintpoint F1 announcement pdf. Although buying a 1TB drive may cost more per Gigabyte than 2 x 500GB drives, the 2 drive solution is twice as likely to fail per Gigabyte. However, it will generally be slower as you have less spindles.