hot swap drive carriers

1998-11-16 Thread Chris Mauritz
Just wondering what the linux raid folk are using for hot swappable carriers. I haven't been able to find a brand I'm happy with (tried Antec and Kingston brands). Chris -- Crack the RSA RC5-64 encryption algorithm. Use your idle cpu cycles to take part in the fastest computer on the

Re: multiple scsi with raid

1998-12-17 Thread Chris Mauritz
From [EMAIL PROTECTED] Thu Dec 17 13:37:24 1998 I know this may be more of a hardware question than a specific RAID question, but here goes. I just got a DPT RAID controller, but my motherboard has a built-in scsi controller. So I have two scsi controllers. My problem is that I have a

Re: multiple scsi with raid

1998-12-17 Thread Chris Mauritz
From [EMAIL PROTECTED] Thu Dec 17 15:15:04 1998 You should be able to disable the integrated SCSI controller from the motherboard BIOS configuration utility (usually by hitting DEL at boot time). I think that misses the point, I think the goal was to get both going in order to spread

Re: probs with Dual channel SmartRAID-IV 3334UW controller and 64M of mem

1999-01-06 Thread Chris Mauritz
I had all kinds of problems with Adaptec SCSI controllers (both the 2940 and the 3-channel UW RAID card) on the Tyan board with linux and NT. Adaptec says it's the motherboard. I'm inclined to agree since switching to a Mylex 952 showed the same symptoms (same as yours). Chris From [EMAIL

Re: RAID1 on / for RH 5.2

1999-01-08 Thread Chris Mauritz
From [EMAIL PROTECTED] Wed Jan 6 11:25:19 1999 Jack Gavigan wrote: While I'm not new to Linux or RAID, I am new to RAID on Linux. I've read the Root-RAID-HOWTO about 10 times and I'm about as confused as when I first started. My question, I guess, is: Am I right in thinking

Re: eide raid5?

1999-01-19 Thread Chris Mauritz
From [EMAIL PROTECTED] Tue Jan 19 10:52:47 1999 | Hmm. I use SCSI on high-performance systems, but if IDE is so bad, why | does NASA use IDE? ;) as far as I know, beowulf tends to use the network more than the disk, so it isn't necessary to have an extremely fast disk subsystem. RAM,

Re: HP NetServer HW RAID

1999-02-09 Thread Chris Mauritz
From [EMAIL PROTECTED] Tue Feb 9 08:57:47 1999 Hi! Anybody out there with some real world experiences concerning HP's NetRaid (which is Symbios/NCR 53c8xx based OEM stuff and may be covered by NCRs megaraid driver, afaik) which comes with HP NetServer LH3 models? I'd also be

hardware RAID

1999-02-21 Thread Chris Mauritz
I'd be curious to know what particular card(s) are best supported for hardware RAID 5 under Redhat Linux 5.2. I've been using the software RAID tools provided by mingo, but I think I need something a bit more "static" that I can use in production. I saw a note here not long ago about support

Re: Hardware RAID Solutions

1999-05-31 Thread Chris Mauritz
From [EMAIL PROTECTED] Mon May 31 00:47:50 1999 I just returned an DPT 2044UW controller and caching module, performance was AWFUL. Before I buy a ICP Vortex controller, I wanted to see if anyone knows about any other alternatives. I thought somoene might know how the performance of

Re: Newbie with Adaptec AAA-131U2

1999-07-26 Thread Chris Mauritz
This card isn't supported by linux. As far as I know, Adaptec only supports NT for this particular card. Chris From [EMAIL PROTECTED] Mon Jul 26 16:56:34 1999 I'm installing a hardware RAID under Linux for the first time and have read the DPT Hardware RAID HOWTO but I'm still in need of

Re: Newbie with Adaptec AAA-131U2

1999-07-26 Thread Chris Mauritz
. I guess I was hoping that it would work anyway using one of the existing drivers. Is this not the case? On Monday, July 26, 1999 1:58 PM, Chris Mauritz [SMTP:[EMAIL PROTECTED]] wrote: This card isn't supported by linux. As far as I know, Adaptec only supports NT for this particular

Re: Newbie with Adaptec AAA-131U2

1999-07-26 Thread Chris Mauritz
choice for a raid controller card for linux? On Monday, July 26, 1999 2:42 PM, Chris Mauritz [SMTP:[EMAIL PROTECTED]] wrote: I'm positive it will not work. It also doesn't work very well with NT. I scrapped the one we had after it corrupted the data several times in the space of a month

Re: Adaptec ARO1130-u2 linux driver.

1999-08-13 Thread Chris Mauritz
From [EMAIL PROTECTED] Thu Aug 12 06:43:26 1999 Hi all, is there a Linux driver for the ARO1130-u2 hardware RAID card? No. I found a clear statement in the compatibilitie list that the card and its predecesors are not supported by Linux. Um...that's a pretty good indication that it

partition size limit

1999-09-02 Thread Chris Mauritz
I'm in the process of setting up a system for my company and need a bit of advice. We'd like to have a huge flat filesystem connected to a dual processor RH 6.0 system. I've got a dual PIII-500 system with 256mb RAM and dual Adaptec LVD scsi controllers. I was planning to plop the OS on a

Re: partition size limit

1999-09-03 Thread Chris Mauritz
As I mentioned in my original note, the system is a dual PIII-500 system that will be dedicated as a file server. So there is plenty of cpu grunt to service a software RAID. I agree that the performance numbers seem to lean heavily in favour of software RAID over the currently available

Re: Reliable SCSI LVD controler for Linux ?

1999-09-07 Thread Chris Mauritz
From [EMAIL PROTECTED] Tue Sep 7 11:50:39 1999 What is the most reliable LVD SCSI controler for Linux ? (I use several Buslogic controlers, but as far as I know they don't have an LVD version, which is absolutely necessary for long SCSI chains, and my Buslogic controlers went in an

Re: Newbie: What to do when a disk fails?

1999-09-15 Thread Chris Mauritz
From [EMAIL PROTECTED] Wed Sep 15 13:50:22 1999 Good morning to everyone. correct me if I'm wrong, but I think the current recipe is patching 2.2.12 with the latest raid alpha patch (for 2.2.11) and when patch complains about fs.h, tell it to completely skip fs.h since changes to that

Benchmark w/3 50gig Barracudas

1999-09-21 Thread Chris Mauritz
Just thought I would drop this note to the list. A couple of my 50gig drives were "repurposed" before I could run the test so this is only a 3 disk RAID 0 stripeset. The production system will have 8 drives (4 on each channel). I'm wondering if this will scale linearly and give me over

Re: Hotswapping successes?

1999-09-22 Thread Chris Mauritz
Are you sure you're not having some sort of cabling/termination issue? C From [EMAIL PROTECTED] Wed Sep 22 11:15:58 1999 Hi people, I'm running kernel 2.2.12 with 2.2.11 raid patch. Everything seems to be ok, except that i cannont manage to retreive an scsi disk from one of my two

error message

1999-10-04 Thread Chris Mauritz
I'm getting the occasional error message of the form: (scsi0:0:0:0) Parity error during Data-In phase. This is on a 150gig stripeset using 3 50gig barracudas on an Adaptec 2940u2w controller. The kernel is 2.2.12 with the 2.2.11 raid patches. I don't think these really are parity errors as

Re: RAIDtools for kernel 2.3.29

1999-12-12 Thread Chris Mauritz
From [EMAIL PROTECTED] Sun Dec 12 12:18:48 1999 It sounds like 2.3.29 forgot the raidtools patch to be included. try patching it and enter N to any errors then try again. SighAgain? It would be really really nice if the kernel maintainers would recognize the relative stability of the

Re: Ribbon Cabling (was Re: large ide raid system)

2000-01-12 Thread Chris Mauritz
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 1/4 the

Re: FW: looking for pre-configured linux-compatible RAID servers

2000-01-13 Thread Chris Mauritz
Both Penguin Computing and VA Linux will also ship preconfigured RAIDed Linux boxes. They also have nifty 1U and 2U rackmount systems available. www.penguincomputing.com www.valinux.com Cheers, Chris From [EMAIL PROTECTED] Thu Jan 13 10:19:06 2000 Louis-David, Monolith Corporation

ExtremeRAID 1100 benchmarks

2000-03-02 Thread Chris Mauritz
with 8 18gig 10,000rpm IBM Deskstars and one hot spare. Can anyone hazard a guess at the kind of performance I can expect from such an array? Cheers, Chris Chris Mauritz [EMAIL PROTECTED]

Re: FW: ExtremeRAID 1100 benchmarks

2000-03-02 Thread Chris Mauritz
n the 1164 This was a stock redhat 6.0 system. Unfortunately, box only ran linux for about an hour. Alas, it was destined to be an NT machine. I wished someone would port Bonnie (or tiotest) to NT. -Original Message- From: Chris Mauritz [mailto:[EMAIL PROTECTED]] Sent: Thursday

Re: IDE hardware RAID

2000-03-13 Thread Chris Mauritz
Another amusing thing about those controllers (once a driver becomes available) is the cheap hack to turn the cheap $35 dual channel ATA66 controller into the $130 dual channel RAID card by adding one resistor. Details at: http://www.geocities.com/promise_raid/english.htm I'm going to start

Re: Choosing RAID controler

2000-03-15 Thread Chris Mauritz
From: "Rafael Gustavo Gassner" [EMAIL PROTECTED] Does anyone have a suggestion for a good raid adaptec controller for using under linux? None of the Adaptec RAID cards are supported under Linux. Regards, Chris -- Christopher Mauritz [EMAIL PROTECTED]

PCMCIA drive cage for RAID?

2000-03-26 Thread Chris Mauritz
With the popularity of these new 1 RU pizza box server enclosures, I was wondering what people are doing to get better disk throughput. Normally these cases only hold one hard drive. Seems like if someone made a PCMCIA drive cage that fit in a floppy disk form factor, you could connect that to

Re: Which IDE controller

2000-03-29 Thread Chris Mauritz
The promise cards are nice. You can buy the cheap ata/66 ones and add one resistor to convert them into their fastrack hardware RAID controller. See: http://www.geocities.com/promise_raid/english.htm The cards only cost about $25 on pricewatch.com. So you can get two hardware RAID IDE

Mylex ExtremeRAID 1100

2000-04-01 Thread Chris Mauritz
Just thought you guys would find it amusing that this card worked just fine with vanilla Redhat 6.1, but gives blue screens with both NT4 and Win2K Server. Mylex swears it is a hardware issue and is the result of bugs in the Intel Carmel 840 chipset. I find that difficult to believe as the

Re: Fw: Adaptec AAA-133U2 Raid Controller support

2000-04-16 Thread Chris Mauritz
Whoever "assured" you didn't know what they were talking about. This controller is not supported by Linux AT ALL. It will not work. It is a windows-only product. There are a number of other products that are supported under Linux. I happen to like the Mylex ExtremeRAID cards. They seem to be

Re: Fw: Adaptec AAA-133U2 Raid Controller support

2000-04-16 Thread Chris Mauritz
From [EMAIL PROTECTED] Sun Apr 16 16:33:31 2000 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Sunday, April 16, 2000 10:42 AM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: Fw: Adaptec AAA-133U2 Raid Controller support Whoever

Re: adaptec 2940u2w hangups

2000-04-18 Thread Chris Mauritz
Are you SURE it's not a cabling issue? I've had 2940U2w cards act strangely both under Linux and NT when there were problems with cables or terminators. I've gotten into the habit of using SCA drive cages and keeping the LVD cable lengths to a minimum (just between the cage and the controller).

Re: adaptec 2940u2w hangups

2000-04-18 Thread Chris Mauritz
Yes, that is what I thought too. If slowing the bus down causes the problems to disappear, it's almost certainly a cabling or termination issue. Cheers, Chris - Original Message - From: "Gregory Leblanc" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, April 18, 2000 2:28 PM

Re: Status on drivers for ExtremeRaid 2000?

2000-04-19 Thread Chris Mauritz
From [EMAIL PROTECTED] Wed Apr 19 21:07:22 2000 I was wondering if anyone here knew the status on the drivers for the Mylex ExtremeRaid 2000 card. Are they in beta yet? In the next 1-2 months I'm going to need a new raid card and could really use the 2000 over the 1100. (need the

Re: performance limitations of linux raid

2000-04-22 Thread Chris Mauritz
From [EMAIL PROTECTED] Sun Apr 23 01:06:24 2000 Chris Mauritz wrote: From [EMAIL PROTECTED] Sat Apr 22 21:37:37 2000 Hi, im just wondering has anyone really explored the performance limitations of linux raid ? Recognising ones limitations is the first step to overcomming

Re: performance limitations of linux raid

2000-04-24 Thread Chris Mauritz
There's "specs" and then there's real life. I have never seen a hard drive that could do this. I've got brand new IBM 7200rpm ATA66 drives and I can't seem to get them to do much better than 6-7mb/sec with either Win98, Win2000, or Linux. That's with Abit BH6, an Asus P3C2000, and Supermicro

Re: performance limitations of linux raid

2000-05-03 Thread Chris Mauritz
From [EMAIL PROTECTED] Wed May 3 20:38:05 2000 Umm, I can get 13,000K/sec to/from ext2 from a *single* UltraWide Cheeta (best case, *long* reads, no seeks). 100Mbit is only 12,500K/sec. A 4 drive UltraWide Cheeta array will top out an UltraWide bus at 40MByte/sec, over 3

Re: HP Netserver LPr + Mylex

2000-05-24 Thread Chris Mauritz
From [EMAIL PROTECTED] Mon May 22 23:36:35 2000 Has anyone tried installing a Mylex (either acceleraid or extremeraid) card in one of the HP Netserver LPr 2U server systems? HP is currently running a 2 for 1 special on them, which just barely makes the price attractive...but only if I can

Re: HP Netserver LPr + Mylex

2000-05-24 Thread Chris Mauritz
From [EMAIL PROTECTED] Wed May 24 20:41:56 2000 On Wed, 24 May 2000, Chris Mauritz wrote: Have you SEEN one of these? They are *extremely* deep and are a supreme pain in the ass to deal with unless you have 4 poster cabinets instead of racks. BTW...does this mean you actually have

Re: HP Netserver LPr + Mylex

2000-05-24 Thread Chris Mauritz
From [EMAIL PROTECTED] Thu May 25 00:16:30 2000 On Wed, 24 May 2000, Chris Mauritz wrote: For the cost of the LPr, you're probably better off going to someplace like Penguin Computing and have them roll something for you that's known to work. It will likely be a bit cheaper too

Re: Any distro with automated raid setup?

2000-05-29 Thread Chris Mauritz
I'm reasonably sure Redhat 6.2 is ready to go out of the box. BTW, please don't send html mail to the list. cheers, Chris From [EMAIL PROTECTED] Mon May 29 14:14:34 2000 Hi there, I'm wondering if anyone has run into a distribution of linux that = has software raid-util's

Re: speed and scaling

2000-07-10 Thread Chris Mauritz
If you can afford it and this is for real work, you may want to consider something like a Network Appliance Filer. It will be a lot more robust and quite a bit faster than rolling your own array. The downside is they are quite expensive. I believe the folks at Raidzone make a "poor man's"

Re: speed and scaling

2000-07-10 Thread Chris Mauritz
I haven't had very good experiences with the Adaptec cards either. If you can take the performance hit, the Mylex ExtremeRAID cards come in a 3-channel variety. You could then split your array into 3 chunks of 3-4 disks each and use hardware RAID instead of the software raidtools. Cheers,

Re: speed and scaling

2000-07-10 Thread Chris Mauritz
From [EMAIL PROTECTED] Mon Jul 10 17:53:34 2000 If you can take the performance hit, the Mylex ExtremeRAID cards come in a 3-channel variety. You could then split your array into 3 chunks of 3-4 disks each and use hardware RAID instead of the software raidtools. I've not had good

Re: speed and scaling

2000-07-10 Thread Chris Mauritz
From [EMAIL PROTECTED] Mon Jul 10 18:43:11 2000 There are some (pre) test versions by Linux and Alan Cox out awaiting feedback from testers, but nothing solid or consistent yet. Be careful when using these for serious work. Newer != Better This isn't being planned for the next few

Re: speed and scaling

2000-07-11 Thread Chris Mauritz
From [EMAIL PROTECTED] Tue Jul 11 05:21:43 2000 Hi! or just brilliant driver design by Leonard Zubkof, but the Mylex cards are the performance king for hardware RAID under Linux (and I was suprised to hear that. We just bought a Mylex AcceleRAID 250 with five 18G IBM disks, and

Re: Failure autodetecting raid0 partitions

2000-07-15 Thread Chris Mauritz
From [EMAIL PROTECTED] Sat Jul 15 19:29:44 2000 Edward Schernau wrote: Wow, an email CCed to Linus himself! *faint* Well do you know of another way to get a patch into the kernel ?? So if Linus gets hit by a bus (or a fast moving hari krishna), how are folks to get things into the

Re: raid-2.2.17-A0 cleanup for LVM

2000-08-06 Thread Chris Mauritz
From [EMAIL PROTECTED] Sun Aug 6 21:45:04 2000 Andrea Arcangeli ([EMAIL PROTECTED]) wrote on 3 August 2000 19:55: On Aug 2, 7:12pm, Andrea Arcangeli wrote: } Subject: raid-2.2.17-A0 cleanup for LVM This patch cleanups the new raid code so that we have a chance that LVM on top

Re: Hardware RAID and Linux software RAID on a real production server

2000-08-13 Thread Chris Mauritz
From [EMAIL PROTECTED] Sun Aug 13 12:00:21 2000 [snip] So, the final unanswered question is why did the Mylex controler failed that ungracefully if no disk contains dead blocks ? My experimental conclusion is that Linux software RAID is even more reliable (the two RAID sets