[mythtv-users] Linux software raid question

John Drescher drescherjm at gmail.com
Wed Jun 11 13:29:59 UTC 2008


> I know, but what happens when a drive fails.  I switched to hardware RAID
> not because of runtime performance, but because of ease of recovery in
> failure.  It does not matter if the partitions are mirrored.  Either you
> have the bootloader in the MBR, or on the boot sector of an individual
> partition. The BIOS will only point to a single bootloader and if the drive
> with that fails, you must go into BIOS and change it.
>
The  bios will choose the next drive. And all drives have the boot
loader on them and also all drives have a MBR.

>
>> I call this an advantage over hardware. I mean I get  my 256 MB boot
>> and my 50GB / back under full raid level in a less than 30 minutes
>> instead of waiting for hours..
>>
>>
>> I don't wait for hours if the drive was properly shut down.  When I did
>> software, that took a long time too if you did not properly shut things
>> down.
>>
> Here I am talking about when replacing a bad drive. On software raid,
> I do not see any of these shutdown problems anymore. How many times
> does a linux system that is connected to a UPS not properly shut down?
> For me this is a less frequently than replacing a bad drive.
>
>
> So your saying SW RAID resyncs faster than HW RAID?
>
No I am saying you can get your OS back to the correct raid level much
faster though because it will be a much smaller part of the array.

John


More information about the mythtv-users mailing list