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List:       evms-devel
Subject:    [Evms-devel] evms+bbr better than plain RAID 1 ?
From:       Russell Poyner <rpoyner () facstaff ! wisc ! edu>
Date:       2004-03-31 15:31:37
Message-ID: 200403310931.37463.rpoyner () facstaff ! wisc ! edu
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I am in the process of setting up a server for near-line backup of user data 
on a small collection of work stations.  My original plan was to rsync, or 
rdiff-backup (still deciding) the data nightly to a RAID 1 built from a pair 
of 200G seagate ide drives using the md driver.  Then occasionally archive 
data to dvd.

Then I read this <http://linas.org/linux/raid.html>
cautioning against the dangers of data loss due to bad block accumulation.
With RAID 1, do I really need bad block relocation as provided by evms? 
If so what are the implications for disaster recovery?
1. One of the RAID 1 drives fails
2. The drive holding my root filesytem fails (a separate drive)

Thanks
Russell Poyner


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