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PERC 5/i RAID Card: Tips and Benchmarks - Page 454

post #4531 of 7269
It would seem that there is no way to go back to the Dell firmware unless the original firmware file can be patched to be recognised as the correct device by megacli. I have flashed with the 8708ELP LSI firmware 9.0.1-0034 (APP_1.20.32-0512) which looks identical to the newest Dell Per6i firmware and fixes the CTL-R problem. The most recent firmware can be flashed and will work work but you have to use the Megaraid storage manager to configure the array as CTL-R is then not recognised.


Quote:
Originally Posted by vastre View Post
I have this problem, is there a solution to it?
post #4532 of 7269
How many drives does the perc5/6 support? is it only 8 drives or do you need a special cable for more? If you have one with the external connector and attach that to a SAS Expander it can support more than 8? but with just connectors on the card each connector only supports 4 drives?
post #4533 of 7269
just 8 drives on the PERC 6/i - it doesn't support expanders.

The 6/e does support more disks (not sure exactly how many) via expanders, but unless you need a single larger hardware array a second PERC would likely be a much cheaper way of getting more disks.
post #4534 of 7269
Quote:
Originally Posted by the_beast View Post
just 8 drives on the PERC 6/i - it doesn't support expanders.

The 6/e does support more disks (not sure exactly how many) via expanders, but unless you need a single larger hardware array a second PERC would likely be a much cheaper way of getting more disks.
what about the Perc 5? same as the Perc 6?
post #4535 of 7269
Quote:
Originally Posted by mark076h View Post
what about the Perc 5? same as the Perc 6?
I don't have any perc5i's anymore but I used to have some and I can say for a fact that they will support 1 expander but if you try connecting more than 1 then it behaves peculiarly.

I have 2 supermicro 8x2.5 inch drive bays which both have 8 2.5 inch seagate 10k.2's in them and I used to run them on an lsi 8888elp card which gave out on me one day so I pulled a perc5i out of my spares drawer to get me by until I bought something else but I was only able to use either one of the expanded drive bays on it at any one time.

Plug in the second one and it confused it, it saw two drives as being the same drive.

hope this helps ya.
post #4536 of 7269
Quote:
Originally Posted by bamjonut7 View Post
I don't have any perc5i's anymore but I used to have some and I can say for a fact that they will support 1 expander but if you try connecting more than 1 then it behaves peculiarly.

I have 2 supermicro 8x2.5 inch drive bays which both have 8 2.5 inch seagate 10k.2's in them and I used to run them on an lsi 8888elp card which gave out on me one day so I pulled a perc5i out of my spares drawer to get me by until I bought something else but I was only able to use either one of the expanded drive bays on it at any one time.

Plug in the second one and it confused it, it saw two drives as being the same drive.

hope this helps ya.
This (kinda) confirms that the PERC 5 acts the same as the PERC 6 - both (seemingly) support expanders. However the PERC 6 firmware cannot address more than 8 drives - and your experience seems to indicate the 5 is the same.

The firmware on the 6/e (and presumeably the 5/e) can support more drives despite the hardware on the i and e versions basically being identical. Whether it is possible to flash the e firmware onto the i is another matter - anyone care to try?
post #4537 of 7269
Does the Perc 6 need extra cooling? I am looking to get a Norco 4020, does that push enough air to cool the Perc 5/6?
post #4538 of 7269
Quote:
Originally Posted by mark076h View Post
Does the Perc 6 need extra cooling? I am looking to get a Norco 4020, does that push enough air to cool the Perc 5/6?
to be honest with you, and this is only my opinion, but i have several machines with PERC5/I, perc5/E, perc6/i, perc6/e and none of them have ever required additional cooling. so, i think OCN people are just a little bit "over the top" when it comes to cooling... nothing wrong with that if you want the "extra margin of safety", but i don't think you need massive amount of CFM to cool these cards.
TAIPEI
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AURORA
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ASRock X99 Extreme11 EVGA GTX 980 Superclocked 32GB 8x4GB Corsair LPX Samsung XP941  
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Dual Quad-core L5430 2.66Ghz 12mb cache Intel 5000 chipset ATI ES1000 64GB FBDIMM DDR2 PC2-5300 667Mhz 
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WD3000FYYZ PERC H700 w/ 512MB cache CentOS 7.2.1511 950W x2 
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TAIPEI
(10 items)
 
AURORA
(13 items)
 
 
MotherboardGraphicsRAMHard Drive
ASRock X99 Extreme11 EVGA GTX 980 Superclocked 32GB 8x4GB Corsair LPX Samsung XP941  
Hard DriveCoolingOSMonitor
Western Digital 3TB RE Noctua NH-D15 Fedora 21 Linux Samsung S27D590C 
PowerCase
Seasonic SS-1200XP Cooler Master Cosmos II 
CPUMotherboardGraphicsRAM
Dual Quad-core L5430 2.66Ghz 12mb cache Intel 5000 chipset ATI ES1000 64GB FBDIMM DDR2 PC2-5300 667Mhz 
Hard DriveOSPower
WD3000FYYZ PERC H700 w/ 512MB cache CentOS 7.2.1511 950W x2 
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post #4539 of 7269
Quote:
Originally Posted by BLinux View Post
to be honest with you, and this is only my opinion, but i have several machines with PERC5/I, perc5/E, perc6/i, perc6/e and none of them have ever required additional cooling. so, i think OCN people are just a little bit "over the top" when it comes to cooling... nothing wrong with that if you want the "extra margin of safety", but i don't think you need massive amount of CFM to cool these cards.
Agreed. I have a single 80mm fan pointing at the groove between 2 6/i s since they are in adjacent PCIe slots and fans wont fit on them anymore. Was worried at first, but haven't noticed any change in performance.
    
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CPUMotherboardGraphicsRAM
Core i7 970 ASUS P6T Deluxe eVGA GTX 680 6x4GB Kingston Hyper X DDR3-1600 
Hard DriveOptical DriveOSMonitor
Boot R0: 2x256GB Corsair SSD; Scratch R0: 3x750GB Samsung 22x LightScribe DVD+/-DL [SATA] Windows 7 x64 Ultimate Dell 2407FPWx2 
KeyboardPowerCaseMouse
Microsoft Sidewinder X6 Antec TruPower Q 1KW Custom Fabricated 18" cube (Mountain Mods UFO) Logitech G9 Laser 
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post #4540 of 7269
Providing you have some airflow over the stock heatsinks, and you aren't wedging it in between a couple of monster graphics cards, you should be ok. You will get problems if you don't have some air moving though - and in many pcs the area around the expansion cards is pretty dead.
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