Each data sample requires two bytes of storage. You can therefore calculate the total disk storage necessary for each trend by using the following formula:
| Bytes necessary for each trend | = 464 x No. Files + 176 + |
|
File Period (secs) x (No. Files) x 2 |
|
| Sample Period (secs) |
For example, if a trend record produces one sample every ten seconds for one week, and you are using five data files (five weeks), the number of bytes necessary is:
| Bytes necessary = 464 x 5 + 176 + |
|
(7 x 24 x 60 x 60) x 5 x 2 |
|
| 10 | |||
| Bytes necessary = 607,296 bytes | |||
See Also