Hot Swap hardware on FreeBSD?

[me]

what about buying an external raid-box? then you dont have to care about 
these questions ;)
the external box is doing raid 5 with hot standby disk and is connected 
to the system via scsi and looks like one big drive.
the box itself is full of hot-swappable ide drives and the system does 
not notice, if something goes wrong, because the box handles these 
things on its own.


greetings
ruediger



Stephen P. Cravey wrote:

> I'm trying to locate a good resource for creating hot swap capable servers with FreeBSD and Vinum.
> 
> Specifically, I'm trying to find out several things:
> 
> Are there resources somewhere that document this type of thing? Please?
> 
> Do I need controllers for SATA/SCSI that will handle the plugging/unplugging of drives, or do I just need to do a bus rescan (or the like) after the change and notify vinum? i.e. do i need something like an adaptec 2200S or will a 39320 work?
> 
> Is there anything in particular I should look for when buying hot swap chassis? Other than SCA for SCSI?
> 
> What about Hot swap with Fibre Channel?
> 
> What about using FreeBSD in a SAN where it's both serving drives and acting as a client?
> 
> Where can I find (recent) performance numbers for raid 0,1,5 comparisons?
> 
> What else should I know about this before attempting it?
> 
> Thank you.
> 
> -Stephen
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