Re: Which raid card to buy for Sarge

[Brad Campbell <brad@wasp.net.au>]

Sandro Dentella wrote:
> On Thu, Apr 01, 2004 at 09:56:40AM +0400, Brad Campbell wrote:
> 
>>Jeff Garzik wrote:
>>
>>
>>>>it out and insert the new drive in the array. The array starts 
>>>>rebuilding - no effect on the uptime and only a slight loss in 
>>>>throughput. Plus it's seamless.
>>>
>>>Yeah, md+mdadm can do all this right now, provided the hardware and 
>>>driver support is there...
>>>
>>
>>Yes, my point however is for low budget stuff with software raid the driver 
>>support is not yet there in a vanilla kernel.
>>I can't just whack a sata drive off one of my promise SATA150-TX4 
>>controllers, pop another one in and have the kernel rescan the partition 
>>table and realise a new drive was present. (YET!)
> 
> 
> I'm sort of confused... which are the combinations that allow me to hotswap a
> disk w/ software raid. I don't mind doing some mdadm operations, I'm just
> interested in how I can avoid rebooting. 
> 
> I thought I couldn't, now I learn you can "provided the hardware and driver
> support is there"... can you detail a little more?

Yup. Currently, SCSI has the hardware and driver support.
SATA has the hardware support, but not the driver support (Yet).


Regards,
Brad