🚀 go-pugleaf

fif@teleweb.at (Christian Fiala) writes:
>the 4Gig HDD get's to small and i'll habe to change it.
>there are 2 4gig fujitsu 7200rpm (older models) mirrored.
>on this server there are approximately 15 user working, splitted to two 
>10mbit lans. traffic isn't that much and 10mbit are enough at that time.
>there are also 2 scsi-cdroms in it and one hp-dds3 streamer, both 
>(including the hdd) on a symbios 815 controller.
>i'm thinking on changing the 2* 4gig hdds to 2*13gig ide (ibm djna), also 
>mirrored.
>does someone of you have experience with ide in servers?
>it think the speed isn't that problem? (is it???)

Probably not for your environment.  As a general rule, I stay away from
IDE drives in servers.  But for 15 users..... speed shouldn't be an
issue.  That is, unless they are transferring HUGH amounts of data back
and forth.  It may be worth while to check into the price of SCSI drives,
however.


*********** Remove the REMOVE if emailing me directly **************
Hansang Bae        Director of Network Operations, Eastern Region  
Richey Systems          Main Office: (800) 776-5145   
hbae@richeysystems.com  Reg. Office: (718) 352-9021 
Specializing in Network Design/Troubleshooting and Protocol Analysis
********************************************************************

Christian Fiala wrote:

> Hi,
>
> the 4Gig HDD get's to small and i'll habe to change it.
> there are 2 4gig fujitsu 7200rpm (older models) mirrored.
>
> on this server there are approximately 15 user working, splitted to two
> 10mbit lans. traffic isn't that much and 10mbit are enough at that time.
>
> there are also 2 scsi-cdroms in it and one hp-dds3 streamer, both
> (including the hdd) on a symbios 815 controller.
>
> i'm thinking on changing the 2* 4gig hdds to 2*13gig ide (ibm djna), also
>
> mirrored.
>
> does someone of you have experience with ide in servers?
> it think the speed isn't that problem? (is it???)
>
> tnx for your answers,
> christian fiala

IDE is a poor choice for mirroring. If you have to use IDE, make sure that
the drives are on separate channels. If not, you are wasting a 4gig drive.
The reason being is that if the master goes down, so does the slave.

You are much better off using SCSI as you can mirror the drives easier and if
one fails on the chain, the other one can pick up the slack.

Charles

>IDE is a poor choice for mirroring. If you have to use IDE, make sure that
>the drives are on separate channels. If not, you are wasting a 4gig drive.
>The reason being is that if the master goes down, so does the slave.
>

I was under the impression that your couldn't mirror IDE drives that are on
the same channel anyway.  I'm no expert, but I think Supervising the Network
II says you can't do it because of the way the IDE channel works.  OK thats
not verbatim but it wasn't much more technical than that :)

Not really a constructive comment, but just adding my 2cents as well.

Tim

"Tim Banner" <tpb100DELETEUPPERCASE@cwcom.net> wrote:

>>IDE is a poor choice for mirroring. If you have to use IDE, make sure that
>>the drives are on separate channels. If not, you are wasting a 4gig drive.
>>The reason being is that if the master goes down, so does the slave.
>>
>
>I was under the impression that your couldn't mirror IDE drives that are on
>the same channel anyway.  I'm no expert, but I think Supervising the Network
>II says you can't do it because of the way the IDE channel works.  OK thats
>not verbatim but it wasn't much more technical than that :)

Oh, you can mirror them all right.  But what happens to the mirrored drive
if the primary drive's controller fails?  You may not be able to gain
access to the data without the primary drive's controller, or a replacement
drive that's identical to the original.  Probably not a good idea!

Roger

IDE may be a poor choice for software mirroring but that is not the case
for IDE hardware disk mirroring.  The DupliDisk from Arco -
http://www.arcoide.com - for example, runs a RAID 1 (two-drive array)
from the Master channel of only one IDE controller. With both drives
configured as Master, even if one goes down, the computer still sees a
drive there and continues to function.  It's a neat trick.

Donna Barron

In article <3772b175.0@news1.mcmail.com>,
  "Tim Banner" <tpb100DELETEUPPERCASE@cwcom.net> wrote:
> >IDE is a poor choice for mirroring. If you have to use IDE, make sure
that
> >the drives are on separate channels. If not, you are wasting a 4gig
drive.
> >The reason being is that if the master goes down, so does the slave.
> >
>
> I was under the impression that your couldn't mirror IDE drives that
are on
> the same channel anyway.  I'm no expert, but I think Supervising the
Network
> II says you can't do it because of the way the IDE channel works.  OK
thats
> not verbatim but it wasn't much more technical than that :)
>
> Not really a constructive comment, but just adding my 2cents as well.
>
> Tim
>
>


Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.