DANGER!!! Problems with 10.04 installer (RAID devices *will* get corrupted)

[Alvin Thompson]

On 04/23/2010 11:46 AM, Dave Howorth wrote:
> CLIFFORD ILKAY wrote:
>> Someone mentioned using SATA drives for RAID. Beware. Many, perhaps
>> most, of the consumer grade SATA drives aren't suitable for using in
>> RAID. The drive manufacturers have made firmware changes that prevent
>> them from being used in RAID configurations, apparently.
>
> That sounds like FUD. How can a drive tell whether its in a RAID or not?
> What's the source for that allegation?

In most drives these days, there's caching logic.  The drive tries to 
anticipate what block you'll likely read next and can pre-load it for 
better performance.  I imagine that logic would have to be different for 
different RAID configurations.