NEC Univerge SV9100 Installation Manual page 9

The following tables indicate the hard disk and partitioning requirements based on call volume, the disk
sizes specified are a minimum and can be exceeded if desired.
Up to 250 calls per hour or 10 concurrent calls – 1 Hard disk can be used and should be
partitioned as below.
Partition Number
1
2
3
4
Up to 500 Calls per hour or 25 concurrent calls – 3 Separate Hard disks should be used and
should be partitioned as below.
Disk Number
1
1
2
3
Over 2,000 Calls per hour or 100 concurrent calls – 4 Separate Hard disks should be used and
should be partitioned as below.
Disk Number
1
2
3
4
Consideration should also be given for backing up calls, this can be done to either a local device on the
call recording server or to a UNC. The backups consist of a copy of the database and the associated
audio files, the backup destination will need to have sufficient disk space for this data.
A variety of codes can be used by the call recorder that offer different compression ratios for storage.
Using a codec with a high compression ratio will lower the quality of the recording, the available codec
are summarised in the table below. The default codes used is WMA38kbps which offers a good
compromise of quality and compression.
Codec
Uncompressed
WMA24kbps
WMA38kbps
WMA48kbps
WMA64kbps
WMA128kbps
G.729
G.723_5300bps
G.723_6300bps
G.726_16kbps
G.726_24kbps
G.726_32kbps
G.726_40kbps
GSM
Function
Operating System
Database
Temp
Audio
Partition Number
1
2
1
1
Partition Number
1
1
1
1
Size Per Minute
940KB
198KB
329KB
423KB
492KB
982KB
122KB
83KB
98KB
239KB
357KB
474KB
591KB
198KB
Function
Operating System
Database
Temp
Audio
Function
Operating System
Database
Temp
Audio
Size Per Hour
55MB
12MB
19MB
25MB
29MB
58MB
7MB
5MB
6MB
14MB
21MB
28MB
35MB
12MB
Min Size
100GB
200GB
100GB
600GB
Min Size
100GB
200GB
200GB
1TB
Min Size
100GB
200GB
200GB
1TB
Hours in 1 GB Storage
19 Hours
88 Hours
53 Hours
41 Hours
36 Hours
18 Hours
143 Hours
211 Hours
178 Hours
73 Hours
49 Hours
37 Hours
30 Hours
88 Hours
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