73
HDD Recording Capacity = number of channels × time in use (hours) × HDD space used per
recording hour (MB/hour)
You can calculate the formula for recording time:
annel
AmountofCh
hr
rHour
cupationpe
CapacityOc
pacity
TotalHDDCa
hour
time
R
)
(
)
(
)
(
MB/
MB
ecording
Note: 1GB=1000MB, not 1GB=1024MB, so the HDD capacity shown in Base Configuration
under HDD Management is really less than what it is marked.
File size per hour (CBR).
Bit Rate
File
Bit Rate
File
Bit Rate
File
96k
42M
320k
140M
896k
393M
128k
56M
384k
168M
1.00M
450M
160k
70M
448k
196M
1.25M
562M
192k
84M
512k
225M
1.50M
675M
224k
98M
640k
281M
1.75M
787M
256k
112M
768k
337M
2.00M
900M
FOR M5 -1 R EC OR D FIL E SIZE
File size is more unpredictable when using VBR; please refer to the real size of the recorded file.
5.9.2. HARD DISK PROBLEM
Use Detection Tools provided by the HDD manufacturer to detect HDD malfunctions and solve the
problem. We recommend Seagate and Western Digital drives.
How To Detect A Seagate HDD
a) Go to www.seagate.com
,
Click Support & Downloads
choose Sea Tools, download the tool,
as in Diagram 5-11: