RE: ATA66 Raid

2000-06-08 Thread Paul Jakma
On Wed, 7 Jun 2000, Bryan Batchelder wrote: > I always thought it was the necessary writes to all disks for a > single write to the array??? > but that applies to all RAID levels. 'tis common, so the biggest bottleneck in RAID5 is CPU. -- Paul Jakma [EMAIL PROTECTED] PGP5 key: http://www

Re: ATA66 Raid

2000-06-08 Thread Paul Jakma
On Thu, 8 Jun 2000, Edward Schernau wrote: > Not if it sucked - the point is that it could be done fairly cheaply, > with cheap components. ehmm.. the point i was trying to make is that the hardware requirements for RAID5 are so much higher than for a simple controller that it would be madness t

Re: ATA66 Raid

2000-06-08 Thread Edward Schernau
Paul Jakma wrote: [SNIP] > if you think any company would build a card with a general purpose > CPU, (at least $15, if not ~$150 for a StrongARM), FlashRAM, DRAM, > disk controller (IDE or SCSI), I/O bus interface (eg PCI bridge) then > deliberately cripple it so that it could only act as a dri

RE: ATA66 Raid

2000-06-08 Thread Kevin N. Carpenter
Title: RE: ATA66 Raid Most intelligent Raid 5 implementations perform writes one of two ways:   If the code recognizes a series of writes (such as would happen if sequential writing was occurring), it will cache the writes until it has a full block set, then calculate the parity block, and

RE: ATA66 Raid

2000-06-08 Thread Bryan Batchelder
Title: RE: ATA66 Raid I always thought it was the necessary writes to all disks for a single write to the array??? I am (obvisouly) not a RAID expert but that is what I was told by a few people who deal with RAID on Sun boxes...maybe they are wrong... --b -Original Message- From

Re: ATA66 Raid

2000-06-08 Thread Paul Jakma
On Wed, 7 Jun 2000, Edward Schernau wrote: > But YES, it's not out of the realm of possibility that a 7 cent > resistor could make the normal card into a real RAID card. to counter your NT ws/sv registry example, in the case of RAID we are talking about tangible hardware where one application re

RE: ATA66 Raid

2000-06-08 Thread Paul Jakma
On Tue, 6 Jun 2000, Bryan Batchelder wrote: > Also, isn't RAID5 incredibly slow on anything but a well cached hardware RAID5 is CPU bound, so the CPU on the RAID controller becomes the limiting factor. That's why the more recent RAID cards have very beefy CPU's (eg SA1100's at 200MHz up[1]), an

AW: ATA66 Raid

2000-06-07 Thread Martin Bene
> Try the following > > http://www.3ware.com/products/linux3ware.shtml > I've got three of these sitting on a shelf here; I'm not willing to risk using them in a production system yet. The raid1 (mirroring) configuration I'd want to use seems to have a rather nasty bug: The firmware currently in

Re: ATA66 Raid

2000-06-07 Thread Edward Schernau
"m. allan noah" wrote: > > i will point this out AGAIN. the promise fastTrak is NOT hardware raid. did > you really think 30 seconds with a soldering iron and a 7 cent resistor could > make a hardware raid device from a 20 dollar ide card? Well, yes, if Promise intentionally broke the card. C

Re: FW: ATA66 Raid - hotswap trays

2000-06-06 Thread Alvin Oga
hi peter where did you get the "hot swap trays" for IDE drive ?? how is the connectors done...or does the tray have its IDE drive connectors... and the try has a special connector to go to the "raid" backplane ?? have you tried to pull power to the ide-based raid drive say the master drive and

Re: ATA66 Raid

2000-06-06 Thread Chris Tooley
  Fax -Original Message- From: Bryan Batchelder [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 06, 2000 12:04 PM To: 'Peter Frischknecht' Subject: RE: ATA66 Raid   Hi peter, thanks for the reply. My questions: 1.  Best place to buy the 3ware escalade hardware?  Preferably online.

RE: ATA66 Raid

2000-06-06 Thread m . allan noah
stTrak again? > > Thanks, > --b > > -Original Message- > From: m. allan noah [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, June 06, 2000 4:37 PM > To: Bryan Batchelder; [EMAIL PROTECTED] > Subject: RE: ATA66 Raid > > > i will point this out AGAIN. the promi

RE: ATA66 Raid

2000-06-06 Thread Bryan Batchelder
Title: RE: ATA66 Raid I bought the promise card because it acts like an abstraction layer between OS and RAID Array.  Windows sees it as a huge 60GB drive, while it is really 2 30GBs.  DOS sees it as one big disk. I would like to point out that the FastTrak outperforms software raid in

RE: ATA66 Raid

2000-06-06 Thread m . allan noah
raig [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, June 06, 2000 10:11 AM > To: 'Bryan Batchelder'; '[EMAIL PROTECTED]' > Subject: RE: ATA66 Raid > > > Try the following > > http://www.3ware.com/products/linux3ware.shtml > > I have a Promise Utlra6

RE: ATA66 Raid

2000-06-06 Thread Peter Frischknecht
Title: RE: ATA66 Raid You are very welcome for the reply.   Your questions: 1. I purchased mine from : http://www.thelinuxstore.com/perl-bin/index.pl?catid=66   2. The specs you saw are outdated.  In fact, the PDF document that describes the card is outdated.  If you go to their Web site

RE: ATA66 Raid

2000-06-06 Thread Cavanaugh, Craig
t: Tuesday, June 06, 2000 10:29 AM > To: Cavanaugh, Craig > Cc: 'Bryan Batchelder'; '[EMAIL PROTECTED]' > Subject: Re: ATA66 Raid > > "Cavanaugh, Craig" wrote: > > > > Try the following > > > > http://www.3ware.co

Re: ATA66 Raid

2000-06-06 Thread bug1
"Cavanaugh, Craig" wrote: > > Try the following > > http://www.3ware.com/products/linux3ware.shtml > > I have a Promise Utlra66 Card that is working great with a couple of WD > Ultra DMA 66 drives > > On top of that, it's inside a BP6 system in the slot that share an Irq with > a HPT??? ide co

FW: ATA66 Raid

2000-06-06 Thread Peter Frischknecht
ECTED]] Sent: Tuesday, June 06, 2000 10:37 AM To: Bryan Batchelder Cc: '[EMAIL PROTECTED]' Subject: Re: ATA66 Raid On Tue, 6 Jun 2000, Bryan Batchelder wrote: > Hi guys-- > > I am setting up a small server (its an old dual PentiumPro 180 rig), > and its main job is

Re: ATA66 Raid

2000-06-06 Thread Nils Rennebarth
On Tue, Jun 06, 2000 at 09:48:03AM -0400, Bryan Batchelder wrote: > Seagate Barracuda 7200RPM ATA66 drives. What is the best ATA66 card to buy? > Promise? I have a friend who set up a promise card and he said it kept > crashing on him (once a day) My HPT366 crash the machine hard, relieably and

RE: ATA66 Raid

2000-06-06 Thread Bryan Batchelder
Title: RE: ATA66 Raid Cool, thats what I run on my personal machine (I have a BP6 with dual 550s) and I got the Promise card and modded it to be a FastTrak66 :-) I am waiting for the linux FastTrak66 drivers though. --b -Original Message- From: Cavanaugh, Craig [mailto:[EMAIL

RE: ATA66 Raid

2000-06-06 Thread Cavanaugh, Craig
t any lockups. I am not using the HPT contoller at this time. I'm using Raid 0.9 with the IDE patches. > -Original Message- > From: Bryan Batchelder [SMTP:[EMAIL PROTECTED]] > Sent: Tuesday, June 06, 2000 8:48 AM > To: '[EMAIL PROTECTED]' > Su

Re: ATA66 Raid

2000-06-06 Thread Stephen Frost
On Tue, 6 Jun 2000, Bryan Batchelder wrote: > Hi guys-- > > I am setting up a small server (its an old dual PentiumPro 180 rig), > and its main job is just serving files. I want to throw in 3 or 4 30GB > Seagate Barracuda 7200RPM ATA66 drives. What is the best ATA66 card to buy? >

ATA66 Raid

2000-06-06 Thread Bryan Batchelder
Title: ATA66 Raid Hi guys--         I am setting up a small server (its an old dual PentiumPro 180 rig), and its main job is just serving files.  I want to throw in 3 or 4 30GB Seagate Barracuda 7200RPM ATA66 drives.  What is the best ATA66 card to buy?  Promise?  I have a friend who