Todays talk.

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       <div class="date"> 1st May 2015</div>
       <div class="body"><p>Many years ago, a friend of mine calculated how much it would cost
 to store the sound of all phone calls in Norway, and came up with the
-cost of around 20 million NOK for all the calls in a year.  I got
-curious and wondered what the same calculation would look like today.
-To do so one need an idea of how much data storage is needed for each
-minute of sound, how many minutes all the calls in Norway sums up to,
-and the cost of data storage.</p>
+cost of around 20 million NOK (2.4 mill EUR) for all the calls in a
+year.  I got curious and wondered what the same calculation would look
+like today.  To do so one need an idea of how much data storage is
+needed for each minute of sound, how many minutes all the calls in
+Norway sums up to, and the cost of data storage.</p>
 
 <p>The 2005 numbers are from
 <a href="http://www.digi.no/analyser/2005/10/04/vi-prater-stadig-mindre-i-roret">digi.no</a>,
@@ -49,9 +49,9 @@ to get the storage requirements.</p>
 
 <p>Storage prices varies a lot, depending on speed, backup strategies,
 availability requirements etc.  But a simple way to calculate can be
-to use the price of a TiB-disk (around 1000 NOK) and double it to take
-space, power and redundancy.  It could be much higher with high speed
-and good redundancy requirements.</p>
+to use the price of a TiB-disk (around 1000 NOK / 120 EUR) and double
+it to take space, power and redundancy into account.  It could be much
+higher with high speed and good redundancy requirements.</p>
 
 <p>But back to the question, What would it cost to store all phone
 calls in Norway?  Not much.  Here is a small table showing the
@@ -59,17 +59,17 @@ estimated cost, which is within the budget constraint of most medium
 and large organisations:</p>
 
 <table border="1">
-<tr><th>Year</th><th>Call minutes</th><th>Size</th><th>Price in NOK</th></tr>
-<tr><td>2005</td><td align="right">24 000 000 000</td><td align="right">1.3 PiB</td><td align="right">3 mill</td></tr>
-<tr><td>2012</td><td align="right">18 000 000 000</td><td align="right">1.0 PiB</td><td align="right">2.2 mill</td></tr>
-<tr><td>2013</td><td align="right">17 000 000 000</td><td align="right">950 TiB</td><td align="right">2.1 mill</td></tr>
+<tr><th>Year</th><th>Call minutes</th><th>Size</th><th>Price in NOK / EUR</th></tr>
+<tr><td>2005</td><td align="right">24 000 000 000</td><td align="right">1.3 PiB</td><td align="right">3 mill / 358 000</td></tr>
+<tr><td>2012</td><td align="right">18 000 000 000</td><td align="right">1.0 PiB</td><td align="right">2.2 mill / 262 000</td></tr>
+<tr><td>2013</td><td align="right">17 000 000 000</td><td align="right">950 TiB</td><td align="right">2.1 mill / 250 000</td></tr>
 </table>
 
 <p>This is the cost of buying the storage.  Maintenance need to be
 taken into account too, but calculating that is left as an exercise
 for the reader.  But it is obvious to me from those numbers that
 recording the sound of all phone calls in Norway is not going to be
-stopped because it is too expensive.  I wonder if someone already are
+stopped because it is too expensive.  I wonder if someone already is
 collecting the data?</p>
 </div>
       <div class="tags">