Hi there,
On Thu, 22 Jun 2000, Thomas Waldmann wrote:
> The most awesome thing I had yet, is IDE AND SCSI:
>
> IDE disks (BIG, fast & cheap)
> IDE-to-SCSI-bridging adaptor (one per IDE disk)
> UW SCSI controller
What controller did you use for this? Is it with the 3Ware card? (I've
heard that
> FYI, I don't do IDE RAID (or IDE at all),
> : but it's pretty awesome on SCSI.
The most awesome thing I had yet, is IDE AND SCSI:
IDE disks (BIG, fast & cheap)
IDE-to-SCSI-bridging adaptor (one per IDE disk)
UW SCSI controller
> Nice and quick, stable, haven't h
Andreas Jellinghaus wrote:
>
> kernel 2.2.15 with raid 0.90, debian potato and raidtools2.
>
> can i build my raid now with hda3 and hdb3 and change the hard
> disks later (so hdb will become hdc), or will this get me into big trouble ?
Assuming you're using RAID autodetect, no problem
kernel 2.2.15 with raid 0.90, debian potato and raidtools2.
can i build my raid now with hda3 and hdb3 and change the hard
disks later (so hdb will become hdc), or will this get me into big trouble ?
thanks for advice.
regards, andreas
> the SCSI bus on one side and emulate one disk, and on the other do
> hardware raid5 across 4 - 8 UDMA buses?
>
>
> I ask because, while not normally somthing I would do, I need
> to rig a large storage array in an evil environ. No way am I mounting
> eight > 1K$ each drives in a mobile
Anyone here worked with one of those devices that plug into
the SCSI bus on one side and emulate one disk, and on the other do
hardware raid5 across 4 - 8 UDMA buses?
I ask because, while not normally somthing I would do, I need
to rig a large storage array in an evil environ.
uhh- maybe cause you are compairing two completely different systems? try
using the same size and number of disks, same motherboard, same cpu, same
everything but the disks and controller, before you try to compair scsi to
ide...
allan
octave klaba <[EMAIL PROTECTED]> said:
> Hi,
> I made the t
Hi,
I made the tests between ide and scsi soft raid and I do not understand
why scsi 2940u2w seems to be slower that ide on promise !?
thanks for your help
octave
PIII500/256/SCSI-2/RAID-1/2xIBM18Go7200
2.2.12
Dir Size BlkSz Thr# Read (CPU%) Write (CPU%) Seeks (CPU%)
- -- --
A fix, possibly, is to look at using grub instead of lilo. Since it
doesn't write the kernel params into the MBR the way lilo does it may vary
well allow for longer strings passed to the kernel.
--
Brian D. Haymore
University of Utah
Center for High Performance Computing
155 South 1452 East RM 4
A fix(?) is found...
First, sorry for the horrendous English on the first post. Never try to
write a technical email right before a meeting. You may become a poster
child for the deterioration of our schooling system (a quote from the day I
sent this: "Jeez, and they actually graduated you...")
Hi there, just want to share some nasty experience (and what to do to solve
it).
Two weeks ago I installed a Raid-5 on two IDE and one SCSI partition under
SuSE 6.3 with the raid0145 patches.
The SCSI drive hangs of an adaptec controller. The drives were type fd and
autodetection of raid is on in
Some threads never die... I'm continuing one here from October...
Thanx for the great summary of how to get a system up and running, but I
have a question about the setup below.
I'm trying to get some 40GB Maxtors up using either Promise Ultra33's or
Ultra66 boards (33's in the logs below). Wit
was about to take one for myself.
>
>By
>Barney
>
>> -Ursprüngliche Nachricht-
>> Von: Raid [mailto:[EMAIL PROTECTED]]
>> Gesendet: Freitag, 14. Januar 2000 02:37
>> An: Schackel, Fa. Integrata, ZRZ DA
>> Betreff: Re: AW: IDE RAID controller?
>&
> I do not know about performance, but if you build raid array using
> masters and slaves on same channel, it will lack redudancy because
> of if master dies, it will take slave with it ? So raid1 or raid5
> using masters AND slaves is totally unwise?
>
I can only speak from experience. I have
;
> > > will the performance of master/slave setup be at least HALF of the
> > > master-only setup.
> >
> > I did run some tests, and my recollection is that it was much worse.
> >
> > > For some apps cost is really important, and software IDE RAID has a v
On Tue, 11 Jan 2000, Thomas Waldmann wrote:
> > Cable length is not so much a pain as the number of cables. Of course with
> > scsi you want multiple channels anyway for performance, so the situation
> > is very similar to ide. A cable mess.
>
> Well, it is at least only a half / third / ... o
> Cable length is not so much a pain as the number of cables. Of course with
> scsi you want multiple channels anyway for performance, so the situation
> is very similar to ide. A cable mess.
Well, it is at least only a half / third / ... of the cable count of "tuned"
single-device-on-a-cable EID
Benno Senoner wrote:
> I was wondering how much IDE channels linux 2.2 can handle,
> can it handle 8 channels ?
I think the limit with the later 2.2 kernel ide patches is 10 IDE channels.
I have run quite a bit with 4 Promise cards (8 channels),
plus the 2 onboard PIIX channels.
Jan Edler
NEC Re
Brian Grossman wrote:
> RZ>
> RZ> Of course this is not the only thing the affects speed. Other issues that
> RZ> make our units fast is the PCI bus which is 133Mbs and DMA directly to
> RZ> drives.
>
> It is however, still unclear whether it's safe to run reiserfs on a
> raidzone. I have a ques
[EMAIL PROTECTED] wrote:
> john b said:
>
> > Performance is pretty good - these numbers are for a first generation
> > smartcan (spring '99)
>
> these numbers are also useless since they are much too close to your ram size,
> and bonnie only shows how fast your system runs bonnie :) a better b
Thomas Davis wrote:
> JMy 4way IDE based, 2 channels (ie, master/slave, master/slave) built
> using IBM 16gb Ultra33 drives in RAID0 are capable of about 25mb/sec
> across the raid.
nice to hear :-) not a very big performance degradation
>
>
> Adding a Promise 66 card, changing to all masters,
James Manning wrote:
>
> [ Tuesday, January 11, 2000 ] Thomas Davis wrote:
> > ---Sequential Output ---Sequential Input--
> > --Random--
> > -Per Char- --Block--- -Rewrite-- -Per Char- --Block---
> > --Seeks---
> > MachineMB K/sec %CPU K/sec %CPU K/sec
$horse='dead';
&beat($horse);
[ Wednesday, January 12, 2000 ] Bohumil Chalupa wrote:
> ,,Termination`` means nothing else then a resistance at the end of the
> cable (each pair) that is equivalent to the cable impedance. And the
> impedance depends on the cable geometry (and material, of course).
Jan Edler wrote:
>
> It all depends on your minimum acceptable performance level.
> I know my master/slave test setup couldn't keep up with fast ethernet
> (10 MByte/s). I don't remember if it was >1 Mbyte/s or not.
>
Fastethernet is 12mb/sec, Ethernet is 1.2mb/sec.
My 4way IDE based, 2 chann
Title: RE: Ribbon Cabling (was Re: large ide raid system)
You may be thinking of differential SCSI which uses a balanced (and twisted) pair for each data and signal line. In the old days, there was only one flavor of differential, and it was popular at least on Hewlett-Packard 800 series
On Tue, 11 Jan 2000, James Manning wrote:
> > > If you cut the cable
> > > lengthwise (no, don't cut the wires) between wires (etc.)
> >
> > I don't know about IDE, but I'm pretty sure that's a big no-no for SCSI
> > cables. The alternating conductors in the ribbon cable are sig, gnd, sig,
> > g
-BEGIN PGP SIGNED MESSAGE-
On 11-Jan-2000 James Manning wrote:
> [ Tuesday, January 11, 2000 ] Andy Poling wrote:
>> On Tue, 11 Jan 2000, Gregory Leblanc wrote:
>> > If you cut the cable
>> > lengthwise (no, don't cut the wires) between wires (don't break the
>> > insulation on the wires
> From [EMAIL PROTECTED] Tue Jan 11 21:44:29 2000
>
> On Tue, 11 Jan 2000, Gregory Leblanc wrote:
> > If you cut the cable
> > lengthwise (no, don't cut the wires) between wires (don't break the
> > insulation on the wires themselves, just the connecting plastic) you can
> > get your cables to be
> Getting back to the discussion of Hardware vs. Software raid...
> Can someone say *definitively* *where* the raid-5 code is being run on a
> *current* Raidzone product? Originally, it was an "md" process running
> on the system cpu. Currently I'm not so sure. The SmartCan *does* have
> its own
[ Tuesday, January 11, 2000 ] Andy Poling wrote:
> On Tue, 11 Jan 2000, Gregory Leblanc wrote:
> > If you cut the cable
> > lengthwise (no, don't cut the wires) between wires (don't break the
> > insulation on the wires themselves, just the connecting plastic) you can
> > get your cables to be 1/4
[ Tuesday, January 11, 2000 ] John Burton wrote:
> Performance is pretty good - these numbers are for a first generation
> smartcan (spring '99)
Could you re-run the raidzone and softraid with a size of 512MB or larger?
Could you run the tiobench.pl from http://www.iki.fi/miku/tiotest
(after "ma
that it was much worse.
> For some apps cost is really important, and software IDE RAID has a very low
> price/Megabyte.
> If the app doesn't need killer performance , then I think it is the best
> solution.
It all depends on your minimum acceptable performance level.
I know my mas
john b said:
> Performance is pretty good - these numbers are for a first generation
> smartcan (spring '99)
these numbers are also useless since they are much too close to your ram size,
and bonnie only shows how fast your system runs bonnie :) a better benchmark
would be to see how this runs w
ler context switches, etc). If you only
need the space, then this is an accptable solution, for low throughput
applications. I don't know jack schitt about ext2, the linux ide
drivers (patches or old ones), or about the RAID code, except that they
work.
>
> For some apps cost is real
John Burton wrote:
>
> Thomas Davis wrote:
> >
> > James Manning wrote:
> > >
> > > Well, it's kind of on-topic thanks to this post...
> > >
> > > Has anyone used the systems/racks/appliances/etc from raidzone.com?
> > > If you believe their site, it certainly looks like a good possibility.
> > >
On Tue, 11 Jan 2000, Gregory Leblanc wrote:
> If you cut the cable
> lengthwise (no, don't cut the wires) between wires (don't break the
> insulation on the wires themselves, just the connecting plastic) you can
> get your cables to be 1/4 the normal width (up until you get to the
> connector).
I
SCSI works quite well with many devices connected to the same cable. The PCI bus
turns out to be the bottleneck with the faster scsi modes, so it doesn't matter
how many channels you have. If performance was the issue, but the original poster
wasn't interested in performance, multiple channels wou
Thomas Davis wrote:
>
> James Manning wrote:
> >
> > Well, it's kind of on-topic thanks to this post...
> >
> > Has anyone used the systems/racks/appliances/etc from raidzone.com?
> > If you believe their site, it certainly looks like a good possibility.
> >
>
> Yes.
>
> It's pricey. Not much
work quite well,
> if you can deal with the other constraints that I mentioned
> (cable length, PCI slots, etc).
Do you have any numbers handy ?
will the performance of master/slave setup be at least HALF of the
master-only setup.
For some apps cost is really important, and software IDE RAI
Dan Hollis wrote:
>
> On Mon, 10 Jan 2000, Jan Edler wrote:
>
> Cable length is not so much a pain as the number of cables. Of course with
> scsi you want multiple channels anyway for performance, so the situation
> is very similar to ide. A cable mess.
There's a (relatively) nice way to get ar
James Manning wrote:
>
> Well, it's kind of on-topic thanks to this post...
>
> Has anyone used the systems/racks/appliances/etc from raidzone.com?
> If you believe their site, it certainly looks like a good possibility.
>
Yes.
It's pricey. Not much cheaper that SCSI chassis. You only save
On Mon, 10 Jan 2000, Jan Edler wrote:
> > My tests indicate UDMA performs favorably with ultrascsi, at about 1/6 the
> > cost. Cost is often a big factor.
> I wasn't advising against IDE, only against the use of slaves.
Here we agree :D 1 device per channel. (When will any vendors implement
IDE
On Mon, Jan 10, 2000 at 02:03:14AM -0500, James Manning wrote:
> Has anyone used the systems/racks/appliances/etc from raidzone.com?
> If you believe their site, it certainly looks like a good possibility.
The raidzone stuff works, and the packaging is nice.
They provide much more scalability tha
On Mon, 10 Jan 2000, Jan Edler wrote:
> - Performance is really horrible if you use IDE slaves.
>Even though you say you aren't performance-sensitive, I'd
>recommend against it if possible.
My tests indicate UDMA performs favorably with ultrascsi, at about 1/6 the
cost. Cost is often a b
On Mon, Jan 10, 2000 at 12:49:29PM -0800, Dan Hollis wrote:
> On Mon, 10 Jan 2000, Jan Edler wrote:
> > - Performance is really horrible if you use IDE slaves.
> >Even though you say you aren't performance-sensitive, I'd
> >recommend against it if possible.
>
> My tests indicate UDMA per
>From my experience, it works fairly well, but there are some constraints:
- Performance is really horrible if you use IDE slaves.
Even though you say you aren't performance-sensitive, I'd
recommend against it if possible.
- Thus, to get 8 drives in a machine, you not only need
mountin
Franc Carter wrote:
>
> I am planning to set up a large ide raid5 system. From reading the
> archives of the list it looks like the way to go is with promise
> ultra66 cards, making sure that I have good cables. I am hopeing
> to get a minimum of 8 drives into a machine. My current plan is for
>
[ Sunday, January 9, 2000 ] Franc Carter wrote:
> I am planning to set up a large ide raid5 system. From reading the
> archives of the list it looks like the way to go is with promise
> ultra66 cards, making sure that I have good cables. I am hopeing
> to get a minimum of 8 drives into a machine.
I am planning to set up a large ide raid5 system. From reading the
archives of the list it looks like the way to go is with promise
ultra66 cards, making sure that I have good cables. I am hopeing
to get a minimum of 8 drives into a machine. My current plan is for
the following config:-
37gig IB
> > Does anyone know of an ATA-66 IDE RAID controller for Linux? I have seen
> > the Arco product at http://www.arcoide.com/dupli-pci.htm but it is only
> > UDMA/33.
> >
>
> You might look at the RaidZone product line (http://www.raidzone.com)
> although
Raid wrote:
>
> Does anyone know of an ATA-66 IDE RAID controller for Linux? I have seen
> the Arco product at http://www.arcoide.com/dupli-pci.htm but it is only
> UDMA/33.
>
You might look at the RaidZone product line (http://www.raidzone.com)
although it might be more t
Hi,
how about Promise Raid 0,1 Controller.
Have a look @ http://www.promise.com/Products/products.htm#ideraid
By, Barney
> -Ursprüngliche Nachricht-
> Von: Raid [mailto:[EMAIL PROTECTED]]
> Gesendet: Mittwoch, 5. Januar 2000 04:03
> An: [EMAIL PROTECTED]
> Betreff: IDE
Does anyone know of an ATA-66 IDE RAID controller for Linux? I have seen
the Arco product at http://www.arcoide.com/dupli-pci.htm but it is only
UDMA/33.
Brad
In case someone else here wants to build a larger IDE software raid5 in the near
future, here is what works for me very well right now:
- single processor P3
- 4 or more IBM IDE drives (I use 4)
- linux 2.2.13pre15 (but probably better: 2.2.13final)
- the raid 2.2.11 patch (just press enter a fe
Hi all,
o.k. I know the advantages of software RAID. But wouldn't it be a viable
option to use two cheap IDE drives with a hardware RAID controller for the
OS and put the data on a fast RAID 5 SW RAID?
I've read about an IDE RAID 1 Controller (Araid99-300, www.top101usa.com)
that
Hi,
I'm trying to do something that seems to have needed a lot more pizza
than anything I've tried before, am I missing something?
Using a new Promise ATA66 card I'm trying to build a fast IDE based
array. I've had to compile a development kernel (2.3.13) to get my
redhat based linux to recognis
On Sun, 8 Aug 1999, Tom Rini wrote:
> On Sun, 8 Aug 1999 [EMAIL PROTECTED] wrote:
>
> > On Sun, 8 Aug 1999, Tom Rini wrote:
> >
> > > On Sat, 7 Aug 1999 [EMAIL PROTECTED] wrote:
> > >
> > > Both (PIIX?, promise and HPT366) are supported in both 2.2.x and 2.3..
> > > For the latest (wise for ud
On Sun, 8 Aug 1999, Tom Rini wrote:
> On Sat, 7 Aug 1999 [EMAIL PROTECTED] wrote:
>
> > On Sat, 7 Aug 1999, Mark Hahn wrote:
> >
> > > > i can buy the promise ide/66 and Abit HotRod66(HPT366 chipset)
> > > udma66 is not useful over udma33. however, both are supported;
> > > I suspect the promi
On Sat, 7 Aug 1999 [EMAIL PROTECTED] wrote:
> On Sat, 7 Aug 1999, Mark Hahn wrote:
>
> > > i can buy the promise ide/66 and Abit HotRod66(HPT366 chipset)
> > udma66 is not useful over udma33. however, both are supported;
> > I suspect the promise works better.
> both are not really supported
B
On Sat, 7 Aug 1999, Mark Hahn wrote:
> > > > i can buy the promise ide/66 and Abit HotRod66(HPT366 chipset)
> > > udma66 is not useful over udma33. however, both are supported;
> > > I suspect the promise works better.
> > both are not really supported
>
> no loss. the promise udma33 controlle
On Sat, 7 Aug 1999, Mark Hahn wrote:
> > i have here 4 * 25GB ibm disks
> > and an asus p2b-d board with 2* p2-450
> > now i read i should only use master devices
> huh? board has a piix4 controller, which is a busmaster device.
> or do you mean that for concurrent access, you should have just
>
i have here 4 * 25GB ibm disks
and an asus p2b-d board with 2* p2-450
now i read i should only use master devices
so i should buy an extra ide controller
i can buy the promise ide/66 and Abit HotRod66(HPT366 chipset)
i looked in the 2.2.10 kernel, but saw no support for them
in the 2.3.12 there
On Wed, 30 Jun 1999, Tom Rini wrote:
> On Wed, 30 Jun 1999, Michael Tibor wrote:
>
> > On Wed, 30 Jun 1999, Stanley, Jeremy wrote:
> >
> > > I believe it is 66MBps per channel, but keep in mind that Ultra2 SCSI
> > > runs 80MBps per device and has been around for a couple of years.
> > > Ultra
program my homecomputer; beam myself into
the future." --Kraftwerk, 1981
> --
> From: Michael Tibor[SMTP:[EMAIL PROTECTED]]
> Sent: Wednesday, June 30, 1999 11:12 PM
> To: [EMAIL PROTECTED]
> Subject: RE: U-DMA-66 IDE / RAID
>
>
SCSI-UW(160) is out.
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of D. Carlos
> Knowlton
> Sent: Wednesday, June 30, 1999 11:57 AM
> To: Linux-Raid
> Subject: U-DMA-66 IDE / RAID
>
>
> Hey Guys,
>
> I am
On Wed, 30 Jun 1999, Michael Tibor wrote:
> On Wed, 30 Jun 1999, Stanley, Jeremy wrote:
>
> > I believe it is 66MBps per channel, but keep in mind that Ultra2 SCSI
> > runs 80MBps per device and has been around for a couple of years.
> > Ultra3 is supposed to run around 160MBps. My U2/5-drive R
On Wed, 30 Jun 1999, Stanley, Jeremy wrote:
> I believe it is 66MBps per channel, but keep in mind that Ultra2 SCSI
> runs 80MBps per device and has been around for a couple of years.
> Ultra3 is supposed to run around 160MBps. My U2/5-drive RAID0 has a
> "theoretical" bandwidth of 400MBps
Actu
there is an article at wickedpc
(http://www.wickedpc.com/faqs/harddrivetweaking/B) that talks about
the new IBM 22GB Drive ATA-66. Basically ATA-66 doesn't add that much in
speed (like 8%), but it reduces CPU overhead alot. So you shoudl be
rocking with 3 or 4 of those 22GB beasts in a RAID5.
> Sent: Wednesday, June 30, 1999 2:56 PM
> To: Linux-Raid
> Subject: U-DMA-66 IDE / RAID
>
> Hey Guys,
>
> I am building a server that I want to use Linux RAID on. I've heard
> that
> the new IDE spec "U-DMA-66" is supposed to be an extrem
Hey Guys,
I am building a server that I want to use Linux RAID on. I've heard that
the new IDE spec "U-DMA-66" is supposed to be an extremely fast technology.
(is that 66 MHz, or 66MB/s?) Anyway, I was wondering if anyone here has had
any experience with this (in RAID formation, or not). Has S
I couldn't read WINMAIL.DAT but I use RAID0 and EIDE drives (2.0.36
kernel):
[tim@asus]$ cat /etc/raidtab
raiddev /dev/md0
raid-level 0
nr-raid-disks 2
nr-spare-disks 0
chunk-size 16
device /dev/hdg7
raid-disk
yes- we use raid0 on two ide disks for cacheing. i dont recommend that for
anything important though (/, /usr, /var, etc.) we have a big /squid that
we use for raid0, everthing else is raid1 on the same two disks.
doubling your chance of downtime due to hd failure seems irresponsible of
your own
I've been reading the mailing list for some time but haven't come across
anybody using IDE drives in a stripping configuration so here goes. I have
an 80486DX4 100Mhz Intel clone box and two identical Western Digital 850MB
drives. What I would like to do is put one of these drives on each IDE
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