RE: AUTORAID and VA7100 disk arrays for rp7400

i echo the autoraid opinion Mike. had the pleasure of working with HP's sluggish autoraid drives at Cargill. that was Sybase, but same problem. if memory serves, took 3 times as long to get same benchmark through on autoraid than anything else we got out hands on (best case).

-----Original Message-----
Sent: Thursday, January 23, 2003 2:00 PM To: Multiple recipients of list ORACLE-L

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_a nd_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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