# number doesn't add up - Veritas Backup Exec

This is a discussion on number doesn't add up - Veritas Backup Exec ; The backup job result summary I have: 34,337,234 bytes/second (1967.0 Megabytes/minute) if I simply convert the speed from second to minute: 34,337,234 bytes/second * 60 = 2,060,234,040 bytes/minute. Different result. And oh yes this is fast, I backup 250 Gig ...

1. ## number doesn't add up

The backup job result summary I have:
34,337,234 bytes/second (1967.0 Megabytes/minute)
if I simply convert the speed from second to minute:
34,337,234 bytes/second * 60 = 2,060,234,040 bytes/minute. Different result.
And oh yes this is fast, I backup 250 Gig data in 2 hour and 10 minute .
From local test server to HP SSL1016 ULtrium 460 tape library, with flex
I/O.

2. ## Re: number doesn't add up

This is because of some rounding.

Example:
We want to backup 0.1MB Data
- exact we want to backup 3 files, each is 39,496 Byte in size
- so we will backup 121,524 Byte (yap, there are some Byte for directory
entry
- 121,524/1024=118.6/1024=0.1 MB
- we backup for 21 Sec
- 121,524/21=5,786 byte/sec
- 5,786*60=347,160 byte/min
- 347,160/1024=339.0 kbyte/min
- 339.0/1024=0.3 MB/min

But it's just numbers :-) - k.m.w

"acme" wrote:
>The backup job result summary I have:
>34,337,234 bytes/second (1967.0 Megabytes/minute)
>if I simply convert the speed from second to minute:
>34,337,234 bytes/second * 60 = 2,060,234,040 bytes/minute. Different result.
>And oh yes this is fast, I backup 250 Gig data in 2 hour and 10 minute .
>From local test server to HP SSL1016 ULtrium 460 tape library, with flex
>I/O.