[THIN] Re: OT: Dell and HP (Compaq) Servers

Actually best performance for database is RAID 10 but that's a tad off
topic.

Jeff Pitsch

-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Parker, Dennis
Sent: Friday, September 24, 2004 11:43 AM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] Re: OT: Dell and HP (Compaq) Servers

R1 is faster writing because it only writes the data, not the checksum.
R5 is faster reading because it has more spindles to read data from.

So, the statement don't put a database on R5 wouldn't be how our DB
admins
like it.  They like transactions logs on R1 and data on R5.

Exchange, same thing, logs (transaction logs basically) would be better
on
R1, data that the users are reading constantly would be better on R5.

Dennis Parker, MCSE, CCA
Senior Systems Analyst
Fiserv EFT/CNS
4550 SW Macadam Ave, Ste 100
Portland, Or. 97239
Direct: 503-274-6785
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-----Original Message-----
From: Luchette, Jon [mailto:JLuchette@xxxxxxxxxxxxxxx] 
Sent: Friday, September 24, 2004 8:31 AM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] Re: OT: Dell and HP (Compaq) Servers

In what type of scenario does R1 perform better than R5?
In what type of scenario does R5 perform better than R1?

...specifically I mean...  I really don't know, I am curious.  All I
know is
that in an Exchange config one time, it was recommended that ideally, a
certain portion (I think it was the log files) be run on a R1, and the
rest
on R5, but I don't know the logic behind it.  Can you explain why?

/jL

-----Original Message-----
From: Jeff Pitsch [mailto:jpitsch@xxxxxxx]
Sent: Friday, September 24, 2004 11:22 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: OT: Dell and HP (Compaq) Servers


The blanket statement that raid5 is faster than raid1 is false.  Each
has it's place and each performs better in some areas than others.  I
wouldn't run RAID5 on a database server.  

Jeff Pitsch


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