LUN
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What is a LUN for SQL Databases? :w00t:
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Nothing.
A LUN is a SAN concept, not a database concept.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverabilityWe walk in the dark places no others will enter
We stand on the bridge and no one may pass -
hmmmmm...... what is LUN? what is SAN? And no, I HAVE NOT GOOGLED yet. I know I should have to, but if the terms are used here, why not explain it?
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weberharter (11/28/2012)
hmmmmm...... what is LUN? what is SAN? And no, I HAVE NOT GOOGLED yet. I know I should have to, but if the terms are used here, why not explain it?LUN = Logical Unit Number
SAN = Storage Area Network
Honestly the reason they are not explained here is because somebody has already done a better job than I can do off the top of my head.
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weberharter (11/28/2012)
... but if the terms are used here, why not explain it?Because we assume that people know the basic terminology or, if they don't, will go and look it up.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverabilityWe walk in the dark places no others will enter
We stand on the bridge and no one may pass -
GilaMonster (11/28/2012)
weberharter (11/28/2012)
... but if the terms are used here, why not explain it?Because we assume that people know the basic terminology or, if they don't, will go and look it up.
To add to that.... If for no other reason than using a single source of information on the internet has been known to cause people some might grief. It's also a part of the implied job description for anyone that earns their living by working with computers.
--Jeff Moden
RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.Change is inevitable... Change for the better is not.
Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)
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