Print

How Special #4 Footage Retention?

- How far back in time can we review the recorded camera footage?
- Do we have to go to the archive room to retrieve older footage?
evidence
 
 
 
If you choose the standalone package, you can specify the period of footage retention in the recorder such as 7 days, 14 days, 1 month or 2 months etc. Obviously the cost of the recorder and storage is higher for longer periods of footage retention.  Strike a balance between your desirable requirements and the cost of ownership.  Realistically the needs to review recorded footage should come up within 7 days. Some people may feel more comfortable with 14 days.
 
 
 
We have a customer who spends a lot of time overseas.  He owns a large commercial complex and would like to have the facilities to record activities related to security for up to 2 months.  This requirement means a recording storage of tens of terabytes.  
 
We use PC based hard disk drives (HDD) to keep the cost down.  HDD has a certain failure rate being an electromagnetic mechanical device.   The annual failure rate is estimated to be around 4% in the industry.  If we use 10 HDD for footage storage, you may say the potential failure rate of the storage system is as high as 40%.  Who would want to have such type of storage for surveillance security footage?
 
Compucon has developed techniques for reducing the potential failure rate of such huge storage system from 40% back to around 4%. The potential failure rate would be lower than 4% if we deploy a smaller number of HDD in one storage system.  
 
If you choose the hosted package, the default offering is 14 days.  However, you can request for a longer period and you pay a small premium for it.  



Return to North Harbour page

Contact Address

Computers New Zealand Ltd
Compucon House
PO Box 101-288, NSMC
234 Bush Road, Albany, Auckland
New Zealand

Contact Details

+09 415 3303
+09 415 2202 (Fax)
Email Us