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IP Office ContactStore 7.8 Page 15
15-601038 Issue 4b (06 July 2009)IP Office
Installation:
2.1 Calculating Disk Size Required for Recordings
The table shows how many gigabytes (GB) per day you typically use given the number of recording ports you have and
the average utilization of these ports over the working day. The figures are based on the assumption that your
compressed recordings will be at 16kbps (a single G.726 file) and that the utilization is averaged over an 8-hour working
day. Should your circumstances differ, recalculate the figures according to the hours over which your port utilization is
averaged.
The assumptions are:
· Compressed Audio - G.726 16kbps per call.
· Resulting in - 7.2MB per hour of recording.
· Hours per day - 8 (typical single shift).
Type of Operation
PBX Extn
Busy - Extn
Typical Call Center
Extreme Call Center
Ports Utilization
10%
30%
70%
100%
10
0.1
0.2
0.4
0.6
20
0.1
0.3
0.8
1.2
30
0.2
0.5
1.2
1.7
40
0.2
0.6
1.6
2.3
· Note - All figures are in GB per day.
Total requirements
Use the following table to determine the required disk capacity for your recorder.
Allow
For
Comments
10GB
System overhead and
call details database
PostgreSQL database, Java Virtual Machine, and call details
for 5 million call records online. Buffering space for DVD
archive, etc.
Daily Usage x
(days required online + safety
margin)
Compressed recordings.
Examples
Environment
Daily Storage
Total Storage
Typical office recording
· 30 extensions in normal PBX environment
· 10% utilization over 8 hour day)
· 30 days online storage
· 1 million call records kept online
0.2GB/day
(G.726 16kbps recording)
10 + (30 x 0.2) = 16GB
Small Informal Call Center
· 30 extensions in light use
(30% utilization over 8 hour day)
· 90 days online storage
0.5GB/day
(G.726 16kbps recording)
10 + (90 x 0.5) = 55GB