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4-8 Backup Solution: Swap Removable Hard Disk If it is necessary to save all the recorded data, the most economical way will be to
store data by swapping the removable hard disk. Normally, DVR uses storage
media such as hard disk, tape driver, or recordable optical media (MO, CD-RW,
DVD-RAM…etc.).
Tape : A tape driver is very complicated to operate. It will take more than 10
minutes to search the specific data. The cost is also very high: a tape driver of
100GB capacity costs thousands of US dollars.
Optical Media : The small capacity as 0.65GB to 4.7GB will be the problem of
recordable optical media. To store 100GB data, it will need more than 20 optical
media with the highest capacity, such as DVD-RAM. An optical storage disk will
cost more than ten US dollars, so it will cost more than two hundred US dollars to
store 100GB of data. Another disadvantage is that it will be annoying for
constantly swapping the optical disk.
The market price for 80GB hard disk is less than US$ 100. It will be the most
economic choice for the backup solution. It also has many advantages such as
convenience, easy storage, and fast data tracking. It is the best available solution
for backup purpose.
HDR-16EP is very suitable for using removable hard disk as it is very fast to boot
up and format disks. In chapter 4-4, we discussed how to change the removable
hard disk. The following is just a quick review again.
As recording continues, the available hard disk space will diminish. When the
remaining space is less than 4GB, the display color will change to ORANGE. This
serves as a warning message that the system will soon enter OVERWRITE mode
(i.e. the earliest data will be replaced with the new data). If you would like to keep
all the data, this is the time to swap a new removable hard disk.
Please write down the dates for the recording data in the old hard disk before
swapping hard disk. Push down the power switch on the front panel of the system.
The system will enter Shut Down procedure and turn off power automatically.
When shut down procedure is completed, you could use the hard drive key to take
out the removable hard disk and mark the dates of recording data in the hard disk