Installation guide

188 Planning and Installation Guide ShoreTel 14.2
Server Requirements Voicemail Utilization
10
Voicemail Utilization
The space used for user voicemail messages on the server hard drive depends on the number of
users, the number of messages per user, and the duration of each message. You need approximately
30 MB of hard disk space per hour for voice mail storage.
Table 40 provides some conservative guidelines to estimate the amount of hard disk space used for
voice mail, assuming each user has 15 one-minute voice messages.
Call Detail Records
For each call on the system, call detail records are generated on the Headquarters server. The hard
disk space used on the server for call detail records varies depending on the call load on the system.
The amount of hard disk space for a typical system is shown in Table 41.
Log Files
Log files are generated on the system for technical support. The hard disk space used on the server
for log files varies, depending on the overall system activity.
Table 40: Voice Mail Hard Disk Space
# Users # Messages Length (minutes) Storage (hours) Storage (GB)
100 15 1 25 0.8 GB
500 15 1 125 3.8 GB
1,000 15 1 250 7.5 GB
2,000 15 1 500 15.0 GB
3,000 15 1 750 22.5 GB
4,000 15 1 1,000 30.0 GB
5,000 15 1 1,250 37.5 GB
Table 41: Call Detail Records
# Calls/Day # Calls/Month (20 days) Storage/Month Storage/ 3 Months
100 2,000 3 MB 9 MB
1,000 20,000 30 MB 90 MB
10,000 200,000 300 MB 900 MB
50,000 100,0000 1,500 MB 4,500 MB
Note
20 working days per month (4 weeks/month X 5 days/week = 20)