topic Re: RAID in Disk Enclosures

RAID

Prathamesh_1 — Fri, 07 Jul 2006 09:18:18 GMT

I want to know in and out of RAID Technology and how it will implement in hp-unix servers

Re: RAID

spex — Fri, 07 Jul 2006 09:29:37 GMT

Hi,

My favorite RAID tutorial:
http://www.pcguide.com/ref/hdd/perf/raid/levels/index.htm

Another nice RAID tutorial:
http://www.acnc.com/04_00.html

For software-based RAID under HP-UX, check out Mirrordisk/UX:
http://h20293.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=B2491BA

Comparison of various HP storage solutions (more consise that what's available on hp.com):
http://www.precisiongroup.com/enterprise-HPenterprisestorage.htm

PCS

Re: RAID

harry d brown jr — Fri, 07 Jul 2006 09:29:51 GMT

What problem are you trying to solve?

My opinion is that you should buy hardware raid.

live free or die
harry d brown jr

Re: RAID

Peter Godron — Fri, 07 Jul 2006 09:30:33 GMT

Hi,
for a good start, why not look at:
http://en.wikipedia.org/wiki/RAID

Re: RAID

Torsten. — Fri, 07 Jul 2006 09:36:01 GMT

There are a lot of books written about this and I can't repeat all aspects.
For more info, why not take a look:

http://en.wikipedia.org/wiki/Redundant_array_of_independent_disks

For HP-UX systems RAID 1 is often used (especially for boot disks) based on a volume manager like LVM.
Disk arrays often using levels based on RAID1 or 5. Since some time you can also use some smartarray cards (in some models even for internal disks) to implement RAID technology.

See also
http://docs.hp.com/en/B2355-90950/index.html

Re: RAID

dictum9 — Fri, 07 Jul 2006 15:25:42 GMT

These are good links.

Re: RAID

florin_10 — Sat, 09 Sep 2006 01:52:41 GMT

Hi

In order to configure a RAID 5 a minimum 3 disks are needed. HP offers the h/w neccesary for RAID 5 or 6 implementation.
You need:
I - a RAID controler ie. HP SmartArrayCardControle 6402(two channels) or 6404(4 channels) series, SCSI ULTRA320
II - a MSA30 disk enclosure
III - and of course a minimum 3 disks to populate the enclosure.

The controler card comes with the utilities(sautil, saconfig) neccesary to configure the RAID then using the LVM create the new vgs and the rest.

Regards,
Florin