Posts Tagged ‘data’

Minimizing Data and Voice Costs when Travelling to Europe

Saturday, June 18th, 2011

I’ve recently returned to Vancouver after a trip to Europe – a couple days in Barcelona and a Western Mediterranean cruise on the Carnival Magic.

I try to avoid using Fido’s atrociously priced international roaming for voice and data.

Here’s a rough overview of the system that I’ve pieced together:

  • I carried my iPhone with me and left it on. Technically, I was roaming, but I had no intention of receiving or making phone calls except in emergencies.
  • Data roaming on the cellphone was also off.  I considered buying the roaming data package, but $50 for 10MB of data seemed a bit steep. In hindsight, it’s not a horrific rate if I could somehow make sure only email was being downloaded.
  • Before leaving, I unconditionally forwarded all voice calls to voice mail.  With some cell providers, if you are roaming and you choose not to answer a phone call, the call will route back to your cellphone provider and you are charged roaming rates while someone leaves you a voice mail. I don’t think this currently applies to Fido; however, I wasn’t about to take the chance. Besides, I didn’t want my phone ringing during the middle of the night (I was, after all, in European time zones).
  • I instructed people to text message me if there was anything critical.
  • I have rules in my mailbox to forward emails that are critical (like our web servers being offline) to Fido’s email to SMS address, e.g. 604nnnnnnn@fido.ca.  These are actually active rules at all times, not just when I’m travelling.
  • Of course, the normal voice mail SMS notifications would get sent to me too.
  • With my cellphone on and technically roaming, I would receive the most important messages.  Receiving text messages while roaming is supposed to be free on Fido. I haven’t checked my invoice yet, but I’ve done this successfully for previous trips.
  • Interestingly, modern cruise ships have satellite based cellphone service, so even in the middle of nowhere, I could receive these text messages.
  • Internet access on board the ship is a pricey $0.75 per minute.  This was OK for briefly viewing email, but I wasn’t too comfortable using this too often.
  • On dry land, if I had some time to spare, I would look for WiFi.  At some ports, I stumbled upon Internet cafes.  But, much more common in Europe, as opposed to China, is a WiFi enabled coffee shop. With WiFi, I could download  email for offline review.  Internet cafe pricing was less than a few dollars per hour, which compared to the on-ship pricing, is roughly equivalent to free.
  • For voice calls, on the iPhone I used the 3CXPhone VOIP App with a Voip.ms account to make ridiculously cheap phone calls. I set these up prior to travel. Even while in Vancouver, this combination is useful for making cheap long distance calls on an iPhone while on WiFi – in theory, I can make VOIP calls on 3G; however, it hasn’t worked too well in my limited testing.  There’s either too much lag or too little bandwidth.

All in all, for me, the iPhone was a great tool to have when travelling, even if you don’t plan on paying for pricey roaming voice or data.  This obviously only works if you have similar needs to me – I didn’t really want to be connected, but I did want to know of anything critical.

Also useful for the iPhone was the CityMaps2Go App which had offline maps for nearly every city that I was in – perhaps I’ll post about that separately some day.  Evernote and Dropbox were also useful, but make sure that you use the flagging features to make the files and notes that you need available offline!

Clean Up a Column of Mixed Date Formats Tool

Sunday, December 12th, 2010

A few times a year, a client of our will need our help in cleaning up a manually populated Excel file that has a couple of date columns. Invariably, there is a hodge-podge of date entries, such as 2010-10-05;  june 10, 2010; or 8/4/2008.  We’ve finally made a tool to fix up the bulk of this so that Excel will detect it properly as a date value.

Perceptus introduces the  Clean and convert a column of dates in Excel Numbers Wizard, on the Perceptus Web Tools mini-site.

We hope this tool saves some people besides ourselves some time.

 

Are 5400 RPM drives more reliable than 7200 RPM drives?

Thursday, November 11th, 2010

Bottom line, I don’t have an answer.  But, if I had to bet, I would bet yes.

I skimmed many of the top 10  pages that came up on a Google search and found a lot of hand-waving and very little actual data.  So, I decided to post my own theory here!

Even if there was data, it doesn’t matter.  The differences between various models of drives, or different factories, or different years from the same manufacturer, are probably larger than the difference from spindle rotation speed.  Every brand of hard drive has head crashes, and generally, it seems proportional to market share.  Every once in a while a company has a bad run, and it’s happened to almost all the brands at one time or another.

I decided to replace the crashed hard drive of my home “server” with a 5400 RPM Western Digital Green drive.

My theory is that almost all the components that go into a hard drive are designed and spec’d for 7200 RPM drives.  I can’t imagine a hard drive manufacturer producing parts that are only stable up to 5400 RPM.  The engineering and machinery costs are far higher than the price of the bits of metal and chemicals.  Thus, if the majority (or even all) of the parts are designed to run at a faster speed, running at a lower speed will generally be better for the drive life.

Besides, for this particular machine, speed isn’t that important, plus saving a few watts in power is an added benefit.

What do you think?

 

The Importance of Customer Feedback Surveys!

Friday, October 22nd, 2010

We admit it.  There is room for improvement at print-bingo.com.   We still firmly believe we operate the best web based bingo card generator.  Period.  However, there always has been a long list of items on the to-do list.  In our defense, we never really expected the site to continue to grow the way that it has.  In many ways, features were put-off until the traffic justified the effort.

We decided that we were long overdue to start actively seeking  feedback from our paid  users.  So we did.  Obviously, we used our own hosted survey service, PapayaPolls.com.  Eventually, we’ll create a separte survey for non-Premium users of our site too.  Both will be updated and revised as we go along.

We’ve got a handful of responses so far.  While there are no clear patterns, the input is extremely valuable.  It’s a highly recommended exercise.   After all, shouldn’t all decisions be data driven, if possible?