Apologies to all for shouting, but ...

DO NOT USE AUTORAID!
** *** *** *********

I used an AutoRaid system when I was at Petco.  Performance was
el-sucko.  There was more I/Os happening in the disk array
(by observing the disk lights) than was being caused by the
application and database.

Plus, when the AR system Raid 0+1/5 mode, where some blocks are
kept in a RAID 0+1 area and some are kept in a RAID 5 area, the
array got so busy swapping one for another that it was virtually
useless.

Fiber channel (FC-10) works ok, Clariion (by EMC) works Ok,
heck, even JBOD works better than AutoRaid.

Just my 2¢ worth.

Cheers,
Mike


-----Original Message-----
Sent: Thursday, January 23, 2003 11:35 AM
To: Multiple recipients of list ORACLE-L


Hi,

i am in the process of defining the specs for a rp7400. a lil overwhelmed by the 
storage offerings from HP.
i wanted to know if any of ull hv any inputs regarding a disk array.
we currently hv a Model 30/FC disk array with 9gig drives.
I am looking for a similar or the next higher configuration disk array from HP.

Any inputs regarding VA7100 disk array or corresponding competetive disk aray from 
HP/competitor?

cache size 256/512/1024 MB? dont know which to go.
thinking of going for 18GB 15k rpm rather than 36GB 15K rpm. faster smaller drives.

the va7100 product specs on HP site mention more about AutoRAID (which is dynamic 0+1 
or 5 configuration on the fly).
any inputs on AutoRAID for Oracle database files.
hv ull used 0+1 h/w configuration on VA7100? am i talking sense?

a good article to read, especially page 4
http://www.hp.com/products1/storage/products/disk_arrays/infolibrary/hp_va_and_san_virtualization.pdf


any inputs related to configuring a rp7400 are invited. my initial specs based on my 
current k570 is below.

current k570 (7.3.4)
4 * 200Mhz 
2 gn ram

specs for rp7400 (8i/9i)
4 * 550MHz
6 Gb ram

and i thought it was easy.
take a few procs
add ram
add few disks,
(Baaam!) make sound and license
and u hv a server.

but look into a detailed partlist and configuration options at
https://www.e-solutions.hp.com/shop/cgi-bin/sweetspot.cgi


Thanks
Mandar
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Author: Vergara, Michael (TEM)
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