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Raid Card causing corruption?
Tinman Aug-18-02 08:32 AM
I'm running an ABIT Hot Rod 100 raid card with (4) 40 GB WD drives. When I installed the last drive, I started having problems. I ended up erasing and re-doing the partition and re-formating(after re-boot). Scandisk finds multiple bad clusters and never finishes. I connected just two drives and had the same problem. I've redone (FDISK/format) both on the on-board IDE controller and scandisk finds no problems. When I reattach these drive using the Raid card I again find corruption (bad clusters). Any ideas? I am using the Raid card as only JBOD no Raid array. Athlon AMD 750Mhz running at 900MHz with 512 MB PC133 ram on a 800LMR Motherboard.
Two points; 1)I may not have enough power for all of the devices to run at once 300 Wattt PS with two CD-roms and 5 IDE drives (but running only two drives has the same problem). 2) I cleaned dust off the card before reinstalling (vacuum), so maybe I fried something on the card, but it is recognized and seems to work, except the corruption.
Thanks,
Mike

1. RE: Raid Card causing corruption?
Twinhead Aug-19-02 01:26 AM
In response to message 0
You are OC'íng your CPU!
What is the current PCI speed?
It should NOT EXEED 35 MHZ to be safe with desighn limits for al PCI cards.
(I see it could be still 33,6 MHz, but it can be different with an Athlon)
Normally it is 33.6 MHz.
That can couse corruption due to I/O errors related to the elevated PCI speed.

Also the PSU is a little too small.
The IDE devices (7 in total) can couse a seriuos overload condition when all are active.
You should also be aware that a RAID card consumes also a sigificant power.
Counted in the OC'd CPU makes it only worse!

See if you can lower the PCI freq if neccecairly and get a 400+ watt PSU.

Victor.


** GeoAlloc: 52.518884(N) / 6.110530(E) @ www.mapblast.com **


2. RE: Raid Card causing corruption?
Tinman Aug-19-02 12:26 PM
In response to message 1
Thanks Victor,
I thought that even though my cpu is OC'ed, my bus remained a 33MHz. Is this not true? Do you know of a good utility to give the actual bus speed?
Thanks again,
Mike

4. RE: Raid Card causing corruption?
lbyard Aug-19-02 02:41 PM
In response to message 2
>750Mhz running at 900MHz

The logical conclusion is overclocking corrupts data. You do need a larger power supply and perhaps a better case/more chassis fans. Other than that, the drive could be bad or everything is getting too hot. Larry


5. RE: Raid Card causing corruption?
Twinhead Aug-19-02 04:18 PM
In response to message 2
It can indeed be true, if you have still locked the Multiplier.
Your CPU has a 7.5 Multiplier.
100 MHz and 133 MHz does indeed have a 33 MHz PCI busclock.
But, 100 will be devided into 3 and 133 will be devided into 4.
There is a larger "gap" between your FSB and your PCI with a 133 MHz clock.
There is something like SiSoft Sandra that can tell you all the way of it.
In your Cmos setup there should be a ratio given by each FSB/MEM/PCI frequenty step.
But, Why for g*ds*ake, overclocking while new CPUs are not expensive anymore?
I know it is nice to see how far you can push the CPU.
I have mine run at 150% for one month, simply to test its reliability.
Now it is back on its 600 MHz as where it is made for.

** GeoAlloc: 52.518884(N) / 6.110530(E) @ www.mapblast.com **


6. RE: Raid Card causing corruption?
lbyard Aug-19-02 04:43 PM
In response to message 5
http://139.95.253.213/SRVS/CGI-BIN/WEBCGI.EXE/,/?St=79,E=0000000000026528737,K=9921,Sxi=6,Case=obj(3884)

"Can I overclock my processor?

AMD Does Not Support Unauthorized Alteration of its Products


AMD places a very high value on its reputation as a supplier of PC processors. Our reputation for quality and reliability rests in part on operation of our products within the specified range of performance parameters for each product. AMD is especially concerned that consumers, who purchase or build systems based on AMD’s reputation as a supplier of high-performance PC processors, receive products that have not been altered or modified without AMD's authorization and therefore are assured of AMD's high level of quality and reliability. Either computer systems or data may be damaged as a result of unauthorized alteration of AMD processors such as alteration of AMD products to achieve higher clock speeds than specified (i.e., “overclocking”). Additionally, AMD’s limited warranty specifically excludes unauthorized alterations among other actions and does not cover damages due to external causes such as improper use or operation outside of the data sheet specifications for the product, abuse, negligence, improper installation, accident, loss or damage in transit, or unauthorized repair or alteration by a person or entity other than AMD. Please refer to AMD’s Warranty Information page.

AMD's goal is to provide our customers with the very best computing experience possible. AMD contributes to the achievement of this goal by providing high-performance, high-quality, reliable PC processors. To support the performance, quality, and reliability of our PC processors, AMD is committed to supporting our processors when they are configured to maintain the specified operating range that is authorized by AMD.

We appreciate your understanding, cooperation, and your recognition that AMD does not support the unauthorized alteration of AMD products."

http://www.intel.com/support/processors/sb/4013240681174563-prd24.htm

"Processors
Can Intel(R) Processors Be Overclocked?

This applies to:
Intel(R) Xeon(TM) processors, Mobile Intel(R) Pentium(R) 4 Processors - M, Intel(R) Pentium(R) 4 processors, Intel(R) Pentium(R) III Xeon(TM) processors, Mobile Intel(R) Pentium(R) III processors, Intel(R) Pentium(R) III processors, Intel(R) Pentium(R) II Xeon(TM) processors, Mobile Intel(R) Pentium(R) II processors, Intel(R) Pentium(R) II processors, Mobile Intel(R) Celeron(R) processors, Intel(R) Celeron(R) processors

Symptom(s):
Processor failure
Speed up processor
Calculation errors
Change system bus
Change clock multiplier
Make processor faster


Solution:
Intel(R) processors are validated and supported only when they are operated at their factory rated settings. Operating a processor faster than it was designed (overclocking) can cause permanent damage to the processor, and possibly other system components including the motherboard. Other negative results are possible including the inability to boot or calculation errors. Operating a processor outside of specification will likely shorten the life of the processor, and can also void any available processor warranty.

Although not supported, it is possible to operate a processor below its rated speed. Microprocessor operation is specified down to 1/2 the maximum rated frequency. This may be necessary for troubleshooting, or because of a motherboard limitations."

Larry


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