[asterisk-users] Saftware RAID1 or Hardware RAID1 with Asterisk

[Russ Price]

C F wrote:
> ~# cat /proc/mdstat
> Personalities : [raid1]
> md0 : active raid1 sdb2[2](F) sda2[1]
>       76139968 blocks [2/1] [_U]
> 
> unused devices: <none>
> 
> The above is from an active system that one hdd failed. It would take
> way longer to find such a thing on a hardware raid. Unless it came
> with a program that emails me notification on such a failure.

Also, speaking of email notifications, the mdadm program that controls 
Linux software RAID has a monitor mode with that capability. One of my 
own systems is a file server that had four 120GB SATA drives in software 
RAID5 configuration, using a pair of PCI controller cards. A few months 
back, one of the drives failed (shortly after the three-year warranty 
expired, hmmmmm), and I got a note in my inbox about it. The array 
continued running in degraded mode, so I made one last backup, replaced 
the old drives with three 500 GB units (again in RAID5), and restored 
the contents onto the new array.

Of course, once this array gets full enough, I'm going to have to get 
one of those 1 TB drives in an eSATA enclosure to back things up. USB2 
is too slow now. :/ At least the new drives have five-year warranties - 
hopefully they should hold up at least that long.

	Russ