[KLUG Members] any experience with Debian Sarge & Dell 39160 SCSI controller?

[Adam Tauno Williams]

> My advice would be to create swap and possibly /boot on the first few  
> hundred megs of each drive, then make the RAID device (md0) from all the 

Where you stick /boot on a SCSI system really doesn't matter, but the
above is generally accepted practice [and what I do].

> As far as buying a new disk and turning a 3-drive RAID 5 into a 4-drive 
> RAID 5, I'm not sure that's possible.

I doubt it.  I can't picture how this works in RAID-5.

>   It's not a trivial thing, to 
> spread the data and parity to extra drives without losing anything.  
> I've heard that 2-channel or better Compaq (no, I will NOT call them HP 
> SmartArrays!) SCSI RAID controllers can do that stunt, but you're now 
> talking about serious cash. 

The ServeRAID controller might do it,  but I've never tried.  I
generally don't mess with RAID 5.

> Drives are cheap these days, even good ones.  Just buy more capacity 
> than you expect to need and leave some free space in the LVM system.

You can always add another mirrored pair of drives.  Just add it as a
another pv and add that pv to the vg;  lvm will take care of the fact
that the OS thinks these are two separate devices.
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