[ale] Mirroring drives without RAID

[Scott Plante]

Say, you might want to have a look at DRBD, Distributed Replicated Block Device. Using it, you could leave the second drive plugged into another computer, but it would stay sync'd to the drive in the first computer. It's not quite what you asked for, but it might solve your problem. 


Scott 

----- Original Message -----

From: "Alex Carver" <agcarver+ale at acarver.net> 
To: "Atlanta Linux Enthusiasts" <ale at ale.org> 
Sent: Thursday, February 12, 2015 4:42:04 PM 
Subject: [ale] Mirroring drives without RAID 

Got an unusual question from someone at work. He wants to set up a pair 
of drives to store test data which is usually of significant volume 
(several tens of GBs per test). 

He doesn't want to use RAID so that any single drive can be plugged into 
any other computer to mount and recover the data directly. 

The first thought was just a daily cron job rsyncing the two drives but 
I wanted to ask if there was some kind of solution that faked a mirrored 
RAID onto two drives where each drive is just a standard 
partition/volume set (i.e. it's composed only of ext2/3/4 partitions and 
not a RAID partition/volume)? 
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