Re: parts -- Re: ext3 journal on software raid (was Re: PROBLEM: Kernel 2.6.10 crashing repeatedly and hard)

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On 01/19/2005 02:05 PM, Alvin Oga wrote:

hi ya clemen

On Wed, 19 Jan 2005, Clemens Schwaighofer wrote:

quoted

On 01/05/2005 11:44 PM, Alvin Oga wrote:

quoted

you're buying bad hardware from bad vendors

seriously, thats just wrong. Ever heard of IBM "death"start HDs? Or
other stuff? As long as you use IDE hardware you are always close to
fail, IDE hardware is done to put much data on cheap disks.

the "deathstar" ( from thailand to be specific ) disks are the exception
and the worst of the bunch

majority of all my dead disks are scsi disks ..
	- the so called better scsi is in fact worst probably
	because it runs hotter ( spinning faster )
	where cooling the case will not help the ball bearings
	or cooling the disk controller's chips

	( scsi: seagate, ibm, fujitsu, ..
	( ide:  seagate, ibm, fujitsu, wd, maxtor, quantum ... 

Since I do SysAdmin as a "get money for it" service I had not a single
SCSI disk die (call it luck). But I saw so many dead IDE disks, that I
never ever will use IDE stuff in a mission critical or any system that
has to run more reliable.
I think SCSI disks are built for longer usage, and the thing "faster ->
hotter" for SCSI disks is bullshit.
IDE disks run also ~7.500 and more.
I have a bunch of 15K SCSI disks in use and the rest is 10K SCSI disks,
they (10K) run since 3.5 years without a problem.

and most of my ide disks are approaching 8-10 years and no problems
though most of the cpu's or mb have long since been offline for
too slow of a cpu  -- most all are in offices or 65F server rooms

well thats another imporant thing. Where are those boxes. If you store
them in an un-airconditioned room, that is in a building with a central
heating, and in a country where you have >2 Months of >30C a day.
Then you just call for a server problem.

how you build systems does make a difference..
	- lots of fans ( at least 2 per ide disk, just in case one dies )
	( that is the same as with scsi .. now you can compare )

well, "I", never build a single Server. I buy them from HP, Supermicro,
etc. I am out of the "build all myself" age ...

quoted

A expensive vendor doesn't help you from crappy HW insealf.

lots ... 90% f crappy vendors ... 
	- bad disk or wrong disks
	- bad mb or wrong mb
	- bad nic or wrong nic
	- or no rma number to return bad parts
	- .. on and on ..

- i buy thru tier1 distributors and don't have any "noticeable" bad parts
  ( maybe .1% failure ( doa )) over 1,000s of ide disks in the past year
  or two  and lasts way past its warranty period

still, you are not save of bad parts, you are perhaps more save to get
them replaced with more trustworthy distributors.

- --
[ Clemens Schwaighofer                      -----=====:::::~ ]
[ TBWA\ && TEQUILA\ Japan IT Group                           ]
[                6-17-2 Ginza Chuo-ku, Tokyo 104-0061, JAPAN ]
[ Tel: +81-(0)3-3545-7703            Fax: +81-(0)3-3545-7343 ]
[ http://www.tequila.co.jp        http://www.tbwajapan.co.jp ]
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