I have not used this product. It does like quite nice. It is a unit that
holds four drives. According to their ad, you can also mix and match drives.
It's also one of the few units that acknowledges the existence of Linux.

http://www.drobo.com/products/drobo.php

Chris Baker -- cbaker AT intera DOT com
systems administrator
INTERA -- 512-425-2006
 

>>-----Original Message-----
>>From: Les Mikesell [mailto:lesmikesell AT gmail DOT com] 
>>Sent: Wednesday, December 23, 2009 12:39 PM
>>To: General list for user discussion,questions and support
>>Subject: Re: [BackupPC-users] How big is your backup?
>>
>>Gerald Brandt wrote:
>>> Hi,
>>> 
>>> I've been doing backups with BackupPC for quite a few years, mainly 
>>> backing up 2 or 3 servers.
>>> 
>>> I've recently installed BackupPC at the office and am backing up 6 
>>> servers right now, with room to grow.  The current backup (Veritas
>>> BackupExec) keeps around a year of data, which is close to 2.5 TB.  
>>> Since I plan on phasing out Veritas for BackupPC, I'm looking at 
>>> similar sizes for my data.  All my backups will be via 
>>ssh/rsync and 
>>> Samba/Windows shares.
>>> 
>>> How many servers and how much data do you backup using BackupPC?
>>
>>The space you need will depend will depend more on the rate 
>>of change and the amount of duplication than anything else.  
>>Files that don't change will only require space for one copy, 
>>regardless of how many backups you keep or how many machines 
>>have copies of it.  On the other hand, large files that have 
>>even small changes (databases, mailboxes, growing logfiles, 
>>etc.) will require the space for a complete new copy on each run.
>>
>>At the moment, my summaries say:
>>There are 17 hosts that have been backed up, for a total of:
>>* 38 full backups of total size 1204.27GB (prior to pooling 
>>and compression),
>>* 97 incr backups of total size 477.74GB (prior to pooling 
>>and compression).
>>and:
>>* Pool is 418.86GB comprising 2276046 files and 4369 
>>directories (as of
>>12/23 02:04),
>>* Pool file system was recently at 78% (12/23 12:27), today's 
>>max is 87%
>>(12/23 01:15) and yesterday's max was 85%.
>>
>>Which are fairly consistent numbers, but I only keep a few 
>>weeks of history which are already filled.
>>
>>-- 
>>   Les Mikesell
>>    lesmikesell AT gmail DOT com
>>
>>
>>
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