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PERC 5/i RAID Card: Tips and Benchmarks - Page 193

post #1921 of 7172
Quote:
Originally Posted by mortimersnerd View Post
Can anyone confirm that this works on the Gigabyte x58 boards?
I believe most if not all have had issues getting it working, with and without covering pins 5+6. I've not seen a positive response re the 5/i and a Gigabyte X58 board.
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post #1922 of 7172
Quote:
Originally Posted by stebie View Post
I believe most if not all have had issues getting it working, with and without covering pins 5+6. I've not seen a positive response re the 5/i and a Gigabyte X58 board.
oO...that's my new board! well, we will know by the end of this week.
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post #1923 of 7172
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post #1924 of 7172
Quote:
Originally Posted by devsk View Post
Thanks.

I have a PERC 6i but I assume that it will have the same compatibility.

Just doing RAID5 of 4 640 AALS until SSD prices come down more.
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post #1925 of 7172
Hi Guys,

New to the forum, but I was reading this thread for a long time. Recently got myself a Perc 5/i. Love it. Very fast. I installed it on my Intel DG33TLM mobo with 4x1GB mem, total 4GB. After installing, the pc would not boot. After removing 1 DIMM it would boot fine with 3GB. I suspected the combination of all 4 DIMM slots filled was the culprit, so I orderd 2x2GB. Received that today and installed it. Again, no boot. Then I removed the Perc, and the pc booted fine with the 2x2GB.

So, is there a conflict with the Perc and 4GB, or this typical combination? Or might it be the PCI x16 slot and Perc? Or whatever?
Are such problems known and are there any solutions?
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post #1926 of 7172
The first post is updated with the most well known issues. Any other issue pretty much requires luck and perseverance to solve. For example: trying the Perc in other slots, removing/moving other expansion cards, swapping RAM modules around (especially if you've got non-matching sticks), updating the motherboard bios, updating the Perc firmware, etc. Sometimes the Perc is just plain finicky when it comes to the hardware configuration.

That said there shouldn't be an issue with the Perc and >4GBs of RAM; if there is then it isn't common.
post #1927 of 7172
I got my new hard drives today

My Perc RAID array is now 3x 1TB Caviar Black + 2x 1TB Caviar Green




In case your curious, those other hard drives are 2x500GB RE2s, 1x750GB RE2, and 1x 80GB i forget which brand ATA drive for the OS.



Anyway, here are the benchmarks. All are 256k stripe, write back cache, adaptive read ahead enabled.

2x WD10EACS 1TB Caviar Green RAID0


3x WD1001FALS 1TB Caviar Black RAID0


5x Caviars RAID0


5x Caviars RAID5



As you can see, there's something messed up with the RAID5 results....I'm gonna have to mess around with it a bit and see if I can figure out why. I wonder if having a Celeron 440 has anything to do with it




Now, all that's left to do is set up a Fibre Channel network to actually access stuff at these speeds on other PCs
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post #1928 of 7172
Hi guys, I'm about to take the jump into the wonderful world of the DELL PERC 5/I but have a few questions.
I've read about 50 pages of this thread and have seen a few conflicting reports on things, hopefully you can clear them up!
  1. I have a gigabyte p965-ds3p motherboard, which is listed on the first page as being compatible (with the nail polish trick). At the same time I think I read mgx talking about lots of beeps at boot, but no post... can anyone confirm that it has worked on this board?


  2. I have a 4870X2 in a x16 slot. Gigabyte says this board has:

    2 PCI Express X16 slot(x16, x4)
    3 PCI Express X1 slots
    2 PCI slots

    If I put it in the second PCI Express X16 slot am I slowing the 4870X2, and will the raid card fit the slot and run ok at x4? Could I use the X1 if it did bottleneck the 4870X2? I read that using the second x16 slot slowed (and bottlenecks) the first x16 slot to x8?


  3. I have 6x (wheee!) 2.5" Seagate Savvio 73GB 15K SAS 3Gb/s, and I use my machine for music, games, browsing. Nothing too intensive, so I'm going for just a better OS experience, faster application loading, and multitasking.

    I was originally thinking of 3xRAID0 and selling the rest, but would a 4xRAID5 be better speed-wise? Redundancy isn't a huge deal, I'm on windows 7 and run the computer overclocked (e8400 @ 3.8ghz) with 4GB RAM (all ram slots occupied). Is this a good idea?


  4. Last question! I have a 140GB 10KRPM Raptor I'll be removing, 1 other 500GB 7200rpm SATA storage drive, a X-Fi sound card, 2 DVD drives, an e8400 3ghz @ 3.81ghz, and a 4870X2. I think I have a good PSU (Enermax 535W SLi PSU). Will I be ok with 3-4 of these 2.5" drives if I remove the Raptor? I hear they use much less power.....


    Thanks in advance for any knowledge you can impart!
post #1929 of 7172
quick update: Got my 512Mb module from newegg. Works fine. But gains are questionable at best. Plain 'dd' tests with my RAID5 of 2x1TB and 1x750GB seagate 7200.11 drives:

Write: 156 MB/s vs. 150 MB/s
Read: 178 MB/s vs. 168 MB/s

Random read 4k in iozone: 2918KB/s vs. 2362KB/s
Random write 4k in iozone: 1550KB/s vs. 1533KB/s

I had to double the size of the storage file for iozone for 512MB case to make sure I get sane results because if I used 256MB with 512MB cache, the results will be skewed and mostly from RAM. This is one of the reasons why I hate ATTO because the max size there is 256MB...

Nothing to write home about!
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post #1930 of 7172
Quote:
Originally Posted by Rib Feast View Post
Hi guys, I'm about to take the jump into the wonderful world of the DELL PERC 5/I but have a few questions.
I've read about 50 pages of this thread and have seen a few conflicting reports on things, hopefully you can clear them up!
  1. I have a gigabyte p965-ds3p motherboard, which is listed on the first page as being compatible (with the nail polish trick). At the same time I think I read mgx talking about lots of beeps at boot, but no post... can anyone confirm that it has worked on this board?


  2. I have a 4870X2 in a x16 slot. Gigabyte says this board has:

    2 PCI Express X16 slot(x16, x4)
    3 PCI Express X1 slots
    2 PCI slots

    If I put it in the second PCI Express X16 slot am I slowing the 4870X2, and will the raid card fit the slot and run ok at x4? Could I use the X1 if it did bottleneck the 4870X2? I read that using the second x16 slot slowed (and bottlenecks) the first x16 slot to x8?


  3. I have 6x (wheee!) 2.5" Seagate Savvio 73GB 15K SAS 3Gb/s, and I use my machine for music, games, browsing. Nothing too intensive, so I'm going for just a better OS experience, faster application loading, and multitasking.

    I was originally thinking of 3xRAID0 and selling the rest, but would a 4xRAID5 be better speed-wise? Redundancy isn't a huge deal, I'm on windows 7 and run the computer overclocked (e8400 @ 3.8ghz) with 4GB RAM (all ram slots occupied). Is this a good idea?


  4. Last question! I have a 140GB 10KRPM Raptor I'll be removing, 1 other 500GB 7200rpm SATA storage drive, a X-Fi sound card, 2 DVD drives, an e8400 3ghz @ 3.81ghz, and a 4870X2. I think I have a good PSU (Enermax 535W SLi PSU). Will I be ok with 3-4 of these 2.5" drives if I remove the Raptor? I hear they use much less power.....


    Thanks in advance for any knowledge you can impart!
1. no idea, sorry

2. Yup the RAID card will be fine at x4, don't worry. And it won't slow down the GFX card. And yes you could also use the x1 slot, but then it would become a bottleneck.

3. There is little speed difference between 3xRAID0 and 4xRAID5. In 4xRAID5 you will always have one disk with the parity data and the other 3 with regular data, hence making read speeds about equal to the 3xRAID0 (minus a little bit of overhead). Its not very scientific, and there are a lot of other factors, but it gives you a good estimate.

4. You'll be adding another ~60W or so to your system, so probably not. My guess is that it'll still run, but you'll have pushed yourself over the 75% PSU load mark, which shortens its lifespan and could cause problems in the long run (maybe a year from now). You'll also have to double check that its not overheating.
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