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 ...

+ Reply to Thread
Results 1 to 2 of 2

Thread: number doesn't add up

  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.




+ Reply to Thread