Re: Software RAID5 with 2.6.0-test

Måns Rullgård
2003-10-17T19:52:24Z

Jakob Oestergaard <jakob@unthought.net> writes:

>> > many clock cycles availble to it. It's even worse when you realize
>> > the 2Ghz xeon is a better proccessor in many more ways than just
>> > clock cycles.
>>
>> How about this logic:
>>
>> 1) If the processor on the RAID controller can handle the full
>> bandwidth of the disks, it's fast enough.
>> 2) If someone else does the 10% work, the CPU can do 10% more work.
>
> 3) You have a four year old machine - one day the RAID controller dies.
> The company that produced it has been acquired by someone else, and
> the product is no longer availble. Can you get a new adapter with
> firmware that can actually read your disks? Or are your data lost?
> Can you find a replacement controller on e-bay? And would you want
> to?

What are backups for? That argument applies to any controller, for
anything. What if you wanted to read those old 8" floppies? Or that
hard disk from the PDP/11.

If a four year old RAID controller breaks, maybe it's time to get new
disks anyway.

--
Måns Rullgård
mru@users.sf.net