full database backup

Question 1

3 GHZ CPU (Intel pentium 4) single cpu + 2 GB Memory + SCSI HDD

Database size 10 GB - How long will full database backup take if the
backup is writing a file to the hard disk (separate hard disk)

Question 2

during this full backup are users and application able to access the
database

for example
a) select records

b) insert , update, delete records

or is the database backup causing the database to be exclusively
locked up ?

Thanks in advance"newbiegca_sqlsever2000" <newbiegca_sql2000@.sbcglobal.net> wrote in message
news:d11c4aba.0409192309.414e6edb@.posting.google.c om...
> Question 1
> 3 GHZ CPU (Intel pentium 4) single cpu + 2 GB Memory + SCSI HDD
> Database size 10 GB - How long will full database backup take if the
> backup is writing a file to the hard disk (separate hard disk)

No idea - just try it and see. You can backup to multiple files/devices at
once if you need to speed things up, although this will probably only help
if the devices are physically independent drives. See "Using Multiple Media
or Devices" in Books Online.

> Question 2
> during this full backup are users and application able to access the
> database
> for example
> a) select records
> b) insert , update, delete records
> or is the database backup causing the database to be exclusively
> locked up ?
> Thanks in advance

A backup is an online operation, and users can continue to access the
database, including modifying data, while the backup is running (see "Backup
Restrictions" in Books Online). You might also want to review the whole
"Backing Up and Restoring Databases" topic for more detailed information on
backups, recovery models etc.

Simon|||Thanks Simon

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