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Re: My ultimate linux box - raid



Here's the big clue about that version of onboard RAID: it needs kernel
support. Therefore it's not transparent hardware RAID.

Infact, it's closer to software raid than anything else. Just crappy
cheap and unreliable.

Do not buy cheap components for backup. If anything, spend more money on
backup than on anything else. Get a DDS2 or higher tape drive and put it
on a legacy SCSI channel (ie don't mix with your high speed devices
unless you want a hugh perfomance drop).

Remember this: the more hard discs you have, the more likely you are to
have a hard disc failure.

Matthew

On Mon, May 06, 2002 at 07:11:38PM -0700, Alvin Oga wrote:
> 
> hi ya
> 
> none of the onboard raid stuff works ( properly )...
> 
> - test it... pull the cable and see if it stil boots
> 	and try it the other way with the other ide cable...
> 
> 	- if it works... than they may have fixed some of
> 	the raid mirroring problems in hw  ( ie their firmware )
> 
> - in your box..sounds like you have $$$... buy a real hardware
>   raid controller... and skip the (useless) scsi controllers
> 
> - drooling config ?? ( if ide mode ... or sdxx mode too )
> 	boot off hda or hdc
> 	- stripe hda to hdd
> 	- stripe hdc to hdb
> 
> 	/home is raid5 ...  ( mirror that too if one is paranoid )
> 
> 	than backup  /home to /home.backup ( another raid array )
> 
> - i dont like hotswap...
> 	- whatever caused the failure could propagate that failure
> 	to the new hotswap disks... now you lose 2 disks..
> 
> 	- when things fail.... i like to know why before throwing
> 	more hardware into the dying/dead box...
> 
> c ya
> alvin
> 
> On 6 May 2002, Scott Henson wrote:
> 
> > On Sun, 2002-05-05 at 22:53, Michael Kahle wrote:
> > > Here are the specs:
> > > Case: Enlight Full Tower (EN-89020SX34)
> > > Power Supply: Enermax 550W
> > > Mainboard: Tyan Tiger MPX
> > I hear MSI has some nice Mother boards.  A friend just picked up a sweet
> > one with IDE raid built in and crazy extras.  They might have a dual
> > processor model.  I also hear that new MOBO is seriously stable.  
> > > Processor: 2x Athlon MP1800's
> > > Ram: Crucial 1.5GB DDR PC2100 Registered
> > > Monitor: Viewsonic P255f
> > > Soundcard: Sound Blaster Audigy Platinum
> > > Videocard: ATI All-in-Wonder Radeon 8500DV 128 DDR
> > >From what I hear radeon 8500 isnt fully supported till you get XF86 4.2 
> > So you might have to wait to fully use that, but that said I use a
> > Radeon VE which Im quite happy with.
> > > CDROM: Plextor UltraPlex Wide or Some SCSI DVD player???
> > > CD-RW: Plextor Plexwriter 12/10/32s
> > > Backup: I want a DDS-3 or DDS-4 tape solution... sugestions?
> > > RAID: Compaq 5304 128 Raid controller
> > > SCSI: Adaptec 2940W Controller
> > > Disks: 5 Compaq 10k Ultra 3 SCSI
> > > Drive Cage: Enlight EN-8720 Ultra 160 SCA Backplane
> > > Floppy: Teac
> > > Cooling: Any ideas?
> > Now Im off to clean the drool off the floor before someone slips and
> > falls on it.  
> > 
> > -- 
> > -Peace kid
> >   Scott Henson	shenson2@wvu.edu
> > 
> > "God's the ultimate playa, so naturally He's going to have some haters,"
> > rapper Ice Cube said. "But these haters need to realize that  if you
> > mess with the man upstairs, you will get your ass smote. True dat."
> > 
> > 
> > 
> > 
> > 
> > -- 
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> > 
> 
> 
> -- 
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> 

-- 

Matthew Sackman
Nottingham
England

BOFH Excuse Board:
Operators killed when huge stack of backup tapes fell over.


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