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PERC 5/i RAID Card: Tips and Benchmarks - Page 135

post #1341 of 7257
Quote:
Originally Posted by sulfuric View Post
I'm sorry if this has already been brought up. This thread is quite long and I tried search, but didn't see any results.

Has anyone had an experience with running two perc 5/is in 1 pc. Also if this is possible I was wondering if anyone had any suggestions on a good motherboard for that setup. Thanks in advance.
Yes you can do this. But you can't have a RAID array that uses disks from both cards. Each virtual disk has to use physical disks from only one card.
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post #1342 of 7257
Quote:
Originally Posted by tkole View Post
What does everyone use for their HDtune settings under options when they are doing their benchmark tests?
use the default, which is 64KB block size, and and the Test Speed/Accuracy one notch up from the bottom
    
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post #1343 of 7257
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


WARNING

DO NOT USE AN LSI LOGIC FIRMWARE WITH THIS CARD!!!

WHILE THIS IS A DELL REBRANDED LSI LOGIC CARD, IT DOES HAVE
AN DELL BOOTLOADER, REGARDLESS OF THE FIRMWARE YOU FLASH IT
WITH!

THERE ARE BUGS IN THIS CARD, WHEN USED WITH THIS FIRMWARE. I
HAVE JUST RUN INTO ONE, WHEN USING THIS CARD, WITH THE LSI
FIRMWARE.

It looks like this particular bug (although, clearly there could be others)
happens when you are running with a raid of more than 4TB. If you are
running a raid this size, you can likely see the same effects, by running
dd on your card:

dd if=/dev/device of=save-block bs=4k skip=64 count=2

REGARDLESS OF THIS PARTICULAR BUG, DELL HAS ASSURED ME THAT
THERE COULD BE MORE THAN ONE ISSUE LIKE THIS, WHEN USING
SUCH AN UNSUPPORTED, UNVERIFIED, UNTESTED CONFIG!

SO AGAIN, DO NOT WAIT UNTIL SOMETHING 1000x WORSE THAN THIS
BITES YOU IN THE ASS. I WAS LUCKY, AND LOST NO DATA. YOU COULD
END UP LOOSING ALL DATA.

IS IT REALLY WORTH IT?

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
post #1344 of 7257
^wth?
    
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post #1345 of 7257
Thread Starter 
Quote:
Originally Posted by bbarnett View Post
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


WARNING

DO NOT USE AN LSI LOGIC FIRMWARE WITH THIS CARD!!!

WHILE THIS IS A DELL REBRANDED LSI LOGIC CARD, IT DOES HAVE
AN DELL BOOTLOADER, REGARDLESS OF THE FIRMWARE YOU FLASH IT
WITH!

THERE ARE BUGS IN THIS CARD, WHEN USED WITH THIS FIRMWARE. I
HAVE JUST RUN INTO ONE, WHEN USING THIS CARD, WITH THE LSI
FIRMWARE.

It looks like this particular bug (although, clearly there could be others)
happens when you are running with a raid of more than 4TB. If you are
running a raid this size, you can likely see the same effects, by running
dd on your card:

dd if=/dev/device of=save-block bs=4k skip=64 count=2

REGARDLESS OF THIS PARTICULAR BUG, DELL HAS ASSURED ME THAT
THERE COULD BE MORE THAN ONE ISSUE LIKE THIS, WHEN USING
SUCH AN UNSUPPORTED, UNVERIFIED, UNTESTED CONFIG!

SO AGAIN, DO NOT WAIT UNTIL SOMETHING 1000x WORSE THAN THIS
BITES YOU IN THE ASS. I WAS LUCKY, AND LOST NO DATA. YOU COULD
END UP LOOSING ALL DATA.

IS IT REALLY WORTH IT?

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
bbarnett, what other bugs arise other than the 4TB limit?

Most users have been running the LSI Firmware ok and it may be an acceptable trade-off for now.



Quote:
Originally Posted by iakovl View Post
Direct I/O, should i change it?

edit:
how are my numbers so far? my main use will be 4*F1 raid 5 so the raid 0 tests are just for info

which reminds me, i'm finished... can't test no more, will continue tomorrow

edit 2:
is it me or are my numbers low? where did i go wrong?
Run your tests again with Cached I/O.
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post #1346 of 7257
Quote:
Originally Posted by bbarnett View Post
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


WARNING

DO NOT USE AN LSI LOGIC FIRMWARE WITH THIS CARD!!!

WHILE THIS IS A DELL REBRANDED LSI LOGIC CARD, IT DOES HAVE
AN DELL BOOTLOADER, REGARDLESS OF THE FIRMWARE YOU FLASH IT
WITH!

THERE ARE BUGS IN THIS CARD, WHEN USED WITH THIS FIRMWARE. I
HAVE JUST RUN INTO ONE, WHEN USING THIS CARD, WITH THE LSI
FIRMWARE.

It looks like this particular bug (although, clearly there could be others)
happens when you are running with a raid of more than 4TB. If you are
running a raid this size, you can likely see the same effects, by running
dd on your card:

dd if=/dev/device of=save-block bs=4k skip=64 count=2

REGARDLESS OF THIS PARTICULAR BUG, DELL HAS ASSURED ME THAT
THERE COULD BE MORE THAN ONE ISSUE LIKE THIS, WHEN USING
SUCH AN UNSUPPORTED, UNVERIFIED, UNTESTED CONFIG!

SO AGAIN, DO NOT WAIT UNTIL SOMETHING 1000x WORSE THAN THIS
BITES YOU IN THE ASS. I WAS LUCKY, AND LOST NO DATA. YOU COULD
END UP LOOSING ALL DATA.

IS IT REALLY WORTH IT?

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Ok, I may be slow today. But what exactly is the bug? What happens when you fire the above 'dd' command?
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post #1347 of 7257
DuckieHo,

The only way to find other bugs, is to lose data.

Of course, some of those bugs could cause gradual corruption of data as well.

Do people really want to be a guinea pig with their data? Why take a rock solid card, and then turn around and run it in an unstable configuration?

Why risk it? Do you *need* LSI Logic tools?!

Weigh the risk.
post #1348 of 7257
Quote:
Originally Posted by devsk View Post
Ok, I may be slow today. But what exactly is the bug? What happens when you fire the above 'dd' command?

How about Dell writing errant data to your raid? Here's a hexdump:


00000000 de 11 de 11 db 24 20 7c 44 65 6c 6c 20 20 20 20 |�.�.�$ |Dell |
00000010 10 28 00 15 10 28 1f 03 36 be 1f 17 f8 bd af 16 |.(...(..6�..���.|
00000020 30 31 2e 30 30 2e 30 30 00 00 00 3f 36 dc 9f 66 |01.00.00...?6�.f|
00000030 00 00 01 ff ff ff ff ff ff ff ff ff ff ff ff ff |...�������������|
00000040 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |����������������|
*
00000060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000070 02 ff ff ff 00 01 80 45 00 00 00 00 74 60 6d b0 |.���...E....t`m�|
00000080 00 ff 00 ff 00 10 00 07 01 00 ff ff ff ff ff ff |.�.�......������|
00000090 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |����������������|
*
000000c0 00 00 00 01 00 00 00 01 00 00 00 02 00 00 00 20 |............... |
000000d0 00 00 00 22 00 00 00 20 00 00 00 42 00 00 00 77 |..."... ...B...w|
000000e0 00 00 00 b9 00 00 00 01 00 00 00 ba 00 00 00 08 |...�.......�....|
000000f0 ff ff ff ff 00 00 00 00 ff ff ff ff 00 00 00 00 |����....����....|
00000100 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |����������������|
*
00000200 ad 11 11 11 ba 0b 2c 40 44 65 6c 6c 20 20 20 20 |�...�.,@Dell |
00000210 31 32 33 34 35 00 00 00 00 00 00 00 00 00 00 8b |12345...........|
00000220 10 28 00 15 10 28 1f 03 50 45 52 43 20 35 2f 69 |.(...(..PERC 5/i|
00000230 20 20 20 20 20 20 20 20 ff ff ff ff ff ff ff ff | ��������|
00000240 52 53 41 63 30 31 2e 30 32 2e 30 30 01 00 2c 01 |RSAc01.02.00..,.|
00000250 10 00 32 00 1e 1e 1e 1e 1e 04 02 0c 00 01 00 00 |..2.............|
00000260 00 0f a0 05 00 00 00 00 00 00 00 00 00 00 00 00 |..�.............|
00000270 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000280 00 00 00 00 00 00 00 00 00 00 00 c3 8e 00 ff 00 |...........�..�.|
00000290 00 8d 27 00 80 3a 09 00 47 ca 45 11 30 50 40 11 |..'..:..G�E.0P@.|
000002a0 02 00 00 00 00 00 00 00 00 00 00 00 3f 00 00 00 |............?...|
000002b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00000300 00 00 00 00 00 00 00 00 00 00 00 00 36 00 40 00 |............6.@.|
post #1349 of 7257
I am running 5x1TB's in R5 now for a total of 3.63TB.

I really want to add to it, and make it an 8x1TB array. Anyone else running this config and having problems with the LSI firmware? After reading bbarnett's posts, I'm afraid now.

Should I flash it back to Dell's FW? If I do, will I lose my array or will it stay intact? I have probably 3TB of data on it now that I can't lose.
 
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post #1350 of 7257
Quote:
Originally Posted by Bonzâ„¢ View Post
I am running 5x1TB's in R5 now for a total of 3.63TB.

I really want to add to it, and make it an 8x1TB array. Anyone else running this config and having problems with the LSI firmware? After reading bbarnett's posts, I'm afraid now.

Should I flash it back to Dell's FW? If I do, will I lose my array or will it stay intact? I have probably 3TB of data on it now that I can't lose.
I flashed back, and here are the issues:

1) your raid config will not be carried across

2) make sure you take note of the geometry of your raid. If you left your raid at defaults, you likely won't need them.. as the defaults seem to be the same since you are using the Dell manager in the BIOS to admin things. Still, write them down just in case.

3) when you re-create your raid config, make sure you DO NOT initialize the raid. You will even receive a warning, something along the lines of "You should initialize your raid, unless you are recovering from a lost config!".
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