Hello,

I have few questions about my new backup configuration.
Before asking my questions I will give you some useful information about 
what I need to do.
I need a backup ± 10 servers with one full backup every week of 3,5 TB 
and an incremental backup of 100GB 5 times/week.
I have 48 hours to do the full backup and about 8 hours to do the 
incremental backup.
Every servers are on a 100Mb ethernet link.
Considering all this parameters I need some advice about the choice of 
my hard disks.
I'm planing to buy a StorageWorks array from Hp (DAS) but I don't know 
what's the best choice for the hard disks.
I'm pretty sure that a fast hard disk is better for performance but it's 
not for money saving :), I'm wondering if big sata disks of 2TB/7.2k rpm 
are fast enough to achieve my backups in time or is it better to buy 
faster/sas disks to be sure it's done in time.

My second question is about an off-site backup solution.
I will also buy another machine with the same configuration as the first 
one to do an off-site backup.
What's the best solution to achieve this? A new backup of all my servers 
on the off-site backup server or a copy job from the first backup server 
to the second one?
The off-site backup server will only keep the full backups not the 
incrementals and it's also on a 100Mb ethernet link.

I hope you have enough informations to answer my questions.

Thanks for your help.

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