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Article #337

Re: SCSI/IDE and RAID [Was: 120 gb is the Largest hard drive I can put in my 4550?]

#337
From: Tom Scales
Date: Sat, 06 Dec 2003 00:59
190 lines
9189 bytes
Your approach is illogical and irrational. You know it, but refuse to admit
it.

The approach I use, which is, uh, rational, is two IDE hard drives and
decent mirroring software.

Heck of a lot cheaper than any SCSI Raid solution. SCSI is not measureably
more reliable than today's IDE drives.


Tom
"David H. Lipman" <DLipman~nospam~@Verizon.Net> wrote in message
news:%D9Ab.219$227.65@nwrdny01.gnilink.net...
> Rod:
>
> I tried real hard to be a nice guy and let you state your point in a
rational way.  You have
> failed to provide any information to back up your statements.  All you did
was curse and
> name call.  It is neither professional nor a positive sign of good
character.  Therefore I
> have to come to the negative conclusion that you are a character w/o any
redeeming
> qualities.  But I did give you a chance.
>
> Having said that...
>
> The Dell Dimension 4550 is an excellent Pentium 4 platform that uses the
i845 chipset.  I
> see no reason to negate the use of RAID 5 SCSI or RAID 5 SATA on this
platform.  In
> comparison the i4004, a 4 bit CPU, got us to the moon and the number of
MIPS the Dell Dim.
> 4550 platform significantly outperforms a VAX PDP11.
>
> There is nothing foolish about making the data used on a PC reliable.  On
the contrary, it
> is fool hardy to not protect data assets.  The most important aspect of a
computer is the
> data.  This is the information age and information is what is stored on
the hard disk
> sub-system.  If the Original Poster (OP) indicates that she needs 250Gbs
to store the
> content of her photography than the loss of said data can be catastrophic.
Unfortunately
> the use if one hard disk to store this valuable data leads to a single
point of failure and
> the possible complete loss of her data.  What is the cost of data loss to
the OP ?  That is
> the relevant point here.  Not the cost of the disk sub-systems as compared
to the platform
> used.  There is nothing in the computer world that states you have to
spend $20K on a
> computing platform to spend $2K on the disk subsystem.  It just doesn't
work that way.   You
> don't compare the platform cost vs the disk subsystem cost.  You look at
the whole cost of a
> complete system based upon the need for the system.  The platform, storage
and backup media
> is all a part of that overall cost.  The cost of restoring lost data is
always *much higher*
> than the cost of maintaining and or protecting the data. In addition as an
external
> sub-system, if the dell Dim. 4550 platform itself should fail, the disk
sub-system is easily
> ported over to a replacement platform.  Today the OP might have the Dim.
4550 tomorrow, the
> OP might buy a replacement platform.  As a subsystem, it is easily moved
to the newer
> platform thus the overall cost is spread over a longer period of time.
>
> The OP has to perform a personal Cost Benefit Analysis and has to
determine what is the cost
> to her if all the objects of her photographic art were lost.  250GB is
alot of data.  The OP
> has to ask herself....How many DVD discs would it take to backup the data
?  How many CDROMs
> ?  What is the cost of a tape backup system ?
>
> The OP has asserted that she will go with a "large second drive".  Lets
assume that drive is
> 250GB.  If she doesn't go with a reliable storage solution she MUST have a
tertiary storage
> solution in case the "large second drive" fails.  If she was to go for say
a USB2 AIT2 tape
> drive she would still be looking at $900~$1400 for the tape drive and
atleast $45 per tape
> and it would take all nite to perform the backup.  So if you compare the
cost of a backup
> solution for 250GBs worth of data as compared to the cost of a reliable
storage solution
> they equalize.  Then when you look at the benefits of RAID 5 it actually
outweighs the
> benefits of a cheap large drive and a backup solution.
>
> If one drive in the array fails then the OP would still be able to access
her data and then
> buy a replacement drive and then rebuild the data striped to the drive.
This is alot
> quicker than restoring 250GB from 2 to 3 100GB AIT tapes.
>
> There is no foolishness in anything that I have stated nor have I stooped
to your level of
> cursing and ridiculing.
>
> The rest of my replies are inline....
>
> "Rod Speed" <rod_speed@yahoo.com> wrote in message
> news:bqr1mt$26iccm$1@ID-69072.news.uni-berlin.de...
> |
> | David H. Lipman <DLipman~nospam~@Verizon.Net> wrote
> | in message news:7A6Ab.251$vg4.71@nwrdny02.gnilink.net...
> |
> | > And what does the model 4550 have to do with it ?
> |
> | Its the system being discussed where the
> | cost of RAID5 SCSI cant be justified, fool.
>
>
> And what is the cost of replacing the 250GB of data if the drive fails ?
what is the
> opputunity cost in that ?
>
>
> | > It is a computing platform, it has a CPU and RAM and
> | > processes using a high level GUI based operating system.
> |
> | And is a fairly basic desktop system
> | where IDE is perfectly adequate, fool.
> |
>
>
> IDE, SCSI, SATA, PATA - one drive leads to a single point of failure and
250GB of data lost
> on just one drive is very, very costly.
>
>
> | > So what's your point ?
> |
> | Even you should be able to bullshit you way out of your
> | predicament better than that pathetic effort, Lipman.
>
> Childish, moronic, and pitiful way to make a statement don't you think ?
since UseNet data
> is cached and stored is THIS the way you want to be viewed ?  You come off
as an ignorant
> ranting child.
>
>
> | > You should have seen what I was doing
> | > with IBM286 based MCA based platforms.
> |
> | This is where we're all supposed to swoon is it Lipman ?
>
>
> No it is meant to point out the fact that the Dell Dim. 4550 is no "dog".
It a high end
> system that can outperform a system of just a dozen years ago that wasused
a server doing
> alot more and cost thousands of dollars more.
>
>
> | Aint got the remotest relevance to what makes sense on
> | a  4550 TODAY, you pathetic excuse for a bullshit arstist.
>
>
> You show that you are actually a computer illiterate fool who's only way
out of a discussion
> is to curse, rant and verbally harass.  That what separates an expert like
me from and
> newbie user like yourself.  I get paid for my opinions and when I discuss
computer
> technology and application a room full of people become quiet, listen and
take notes.
> That's how I have come to the position of working for a Fortune 100 IT
outsourcing company
> and have been contracted to (censored) for close to a dozen years.
>
> That's it for me.  I have wasted enough time rebuking you.  However, those
who are reading
> this thread will hopefully think about their data and ramifications of
catastrophic data
> loss and how to safeguard their data and protect themselves from a major
loss.
>
> Mr. David H. Lipman
>
>
>
>
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From: "Tom Scales" <tomtoo@softhome.net>
Newsgroups: alt.sys.pc-clone.dell,aus.computers
References: <bo3tsvkujsuj8drknu96kghqnm1fphardi@4ax.com> <zHwzb.21159$UG2.949@nwrdny03.gnilink.net> <PYmdnfxD5JBSBFOiRVn-jA@comcast.com> <iAxzb.6666$t87.2004@nwrdny02.gnilink.net> <bqnifj$24q680$1@ID-151056.news.uni-berlin.de> <3fcfb11a$0$20185$afc38c87@news.optusnet.com.au> <bqosnq$1srbub$1@ID-69072.news.uni-berlin.de> <3fd03818$0$20395$afc38c87@news.optusnet.com.au> <3fd05749$0$31743$c30e37c6@lon-reader.news.telstra.net> <Ao_zb.34512$lF6.32183@nwrdny01.gnilink.net> <bqqq89$259644$1@ID-69072.news.uni-berlin.de> <7A6Ab.251$vg4.71@nwrdny02.gnilink.net> <bqr1mt$26iccm$1@ID-69072.news.uni-berlin.de> <%D9Ab.219$227.65@nwrdny01.gnilink.net>
Subject: Re: SCSI/IDE and RAID [Was: 120 gb is the Largest hard drive I can put in my 4550?]
Date: Fri, 5 Dec 2003 19:59:26 -0500
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