diff --git a/lib/refrepo/gen/wiki/generators/hardware.rb b/lib/refrepo/gen/wiki/generators/hardware.rb
index 9543501479..9c590749c7 100644
--- a/lib/refrepo/gen/wiki/generators/hardware.rb
+++ b/lib/refrepo/gen/wiki/generators/hardware.rb
@@ -274,19 +274,19 @@ def generate_storage
           sd = node_hash['storage_devices']
           reservable_disks = sd.to_a.select{ |v| v[1]['reservation'] == true }.count > 0
           maindisk = sd.to_a.select { |v| v[0] == 'sda' }.first[1]
-          maindisk_t = maindisk['storage'] + ' ' + G5K.get_size(maindisk['size'])
+          maindisk_t = maindisk['storage'] + ' ' + G5K.get_size(maindisk['size'],'metric')
           other = sd.to_a.select { |d| d[0] != 'sda' }
           hdds = other.select { |d| d[1]['storage'] == 'HDD' }
           if hdds.count == 0
             hdd_t = "0"
           else
-            hdd_t = hdds.count.to_s + " (" + hdds.map { |d| G5K.get_size(d[1]['size']) }.join(', ') + ")"
+            hdd_t = hdds.count.to_s + " (" + hdds.map { |d| G5K.get_size(d[1]['size'],'metric') }.join(', ') + ")"
           end
           ssds = other.select { |d| d[1]['storage'] == 'SSD' }
           if ssds.count == 0
             ssd_t = "0"
           else
-            ssd_t = ssds.count.to_s + " (" + ssds.map { |d| G5K.get_size(d[1]['size']) }.join(', ') + ")"
+            ssd_t = ssds.count.to_s + " (" + ssds.map { |d| G5K.get_size(d[1]['size'],'metric') }.join(', ') + ")"
           end
           queues = cluster_hash['queues'] - ['admin', 'default']
           queue_t = (queues.nil? || (queues.empty? ? '' : "_.28" + queues[0].gsub(' ', '_') + ' queue.29'))
diff --git a/lib/refrepo/gen/wiki/generators/site_hardware.rb b/lib/refrepo/gen/wiki/generators/site_hardware.rb
index e842c184e0..ba1fc65629 100644
--- a/lib/refrepo/gen/wiki/generators/site_hardware.rb
+++ b/lib/refrepo/gen/wiki/generators/site_hardware.rb
@@ -201,10 +201,10 @@ def get_hardware(sites)
         hard['processor_description'] = "#{hard['processor_model']} (#{hard['microarchitecture']}#{hard['processor_freq'] ?  ', ' + hard['processor_freq'] : ''}, #{hard['cpus_per_node_str']}, #{hard['cores_per_cpu_str']})"
         hard['ram_size'] = G5K.get_size(node_hash['main_memory']['ram_size'])
         storage = node_hash['storage_devices'].map{ |k, v| {'size' => v['size'],  'tech' => v['storage']} }
-        hard['storage'] = storage.each_with_object(Hash.new(0)) { |data, counts| counts[data] += 1 }.to_a.sort_by { |e| e[0]['size'].to_f }.map{ |e| (e[1] == 1 ? '' : e[1].to_s + ' x ') + G5K.get_size(e[0]['size']) + ' ' + e[0]['tech'] }.join(' + ')
+        hard['storage'] = storage.each_with_object(Hash.new(0)) { |data, counts| counts[data] += 1 }.to_a.sort_by { |e| e[0]['size'].to_f }.map{ |e| (e[1] == 1 ? '' : e[1].to_s + ' x ') + G5K.get_size(e[0]['size'],'metric') + ' ' + e[0]['tech'] }.join(' + ')
         hard['storage_size'] = storage.inject(0){|sum, v| sum + (v['size'].to_f / 2**30).floor }.to_s # round to GB to avoid small differences within a cluster
         storage_description = node_hash['storage_devices'].map { |k, v| { 'device' => v['device'], 'size' => v['size'], 'tech' => v['storage'], 'interface' => v['interface'], 'model' => v['model'], 'driver' => v['driver'], 'path' => v['by_path'] || v['by_id'],  'count' => node_hash['storage_devices'].count } }
-        hard['storage_description'] = storage_description.map { |e| [ e['count'] > 1 ? "\n*" : '', G5K.get_size(e['size']), e['tech'], e['interface'], e['model'], ' (driver: ' + (e['driver'] || 'MISSING') + ', path: ' + (e['path'] || 'MISSING') + ')'].join(' ') }.join('<br />')
+        hard['storage_description'] = storage_description.map { |e| [ e['count'] > 1 ? "\n*" : '', G5K.get_size(e['size'],'metric'), e['tech'], e['interface'], e['model'], ' (driver: ' + (e['driver'] || 'MISSING') + ', path: ' + (e['path'] || 'MISSING') + ')'].join(' ') }.join('<br />')
 
         network = node_hash['network_adapters'].select { |k, v|
           v['management'] == false &&
diff --git a/lib/refrepo/gen/wiki/mw_utils.rb b/lib/refrepo/gen/wiki/mw_utils.rb
index 04a7415d9d..d8d9165ea7 100644
--- a/lib/refrepo/gen/wiki/mw_utils.rb
+++ b/lib/refrepo/gen/wiki/mw_utils.rb
@@ -77,12 +77,21 @@ def self.nodeset(a)
     s += ']'
   end
 
-  def self.get_size(x)
-    gbytes = (x.to_f / 2**30).floor
-    if gbytes < 2**10
-      gbytes.to_s + '&nbsp;GB'
+  def self.get_size(x, unit='IEC')
+    if unit == 'metric'
+      giga = (x.to_f / 1000**3).floor
+      if giga < 1000
+        giga.to_s + '&nbsp;GB'
+      else
+        (x.to_f / 1000**4).round(2).to_s + '&nbsp;TB'
+      end
     else
-      (x.to_f / 2**40).round(3).to_s + '&nbsp;TB'
+      giga = (x.to_f / 2**30).floor
+      if giga < 2**10
+        giga.to_s + '&nbsp;GiB'
+      else
+        (x.to_f / 2**40).round(2).to_s + '&nbsp;TiB'
+      end
     end
   end