On 27 Jan 2000, Les Bell writes:
> Add another in the latter category. Although RAID is important in
> many applications, I suspect the vast majority of Linux servers are
> low-cost, non-RAID. In the corporate world, most of the RAID systems
> I've encountered have been AIX, HP/UX, etc.
In the non-profit world, at least, low cost Linux boxes with Software
RAID, or with hardware IDE mirroring (RAID-1) using cheap US$200 cards
such as those from ArcoIDE, exist. I run some of them :-)
High end RAID too where it can be justified, but that's rare.
A small fileserver running Linux with an extra US$210ish 22GB IDE
drive and software mirroring (zero extra cost there) is still
"low-cost" by most people's definition for server costs, surely.
Some conceptual knowledge of RAID, that these kinds of solutions
exist, and when it might be good to use them, is valid and useful
material to test at L2, IMO. Specifics of managing a high end
external hardware RAID box is probably not, and can be considered
specialist knowledge.
Having said that, I concur with some other comments about whether now
is really the right time for this level of detail to be discussed...
a more general clear definition of how to determine what is L2 and
what is L3 material seems called for first.
Jonathan
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