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PERC 5/i RAID Card: Tips and Benchmarks - Page 533

post #5321 of 7174
I basically gave up on my PERC 5/i once I got some SSD drives, so now it is sitting in my drawer with 3 seagate 300GB 10 SAS drives.

I had the intentions of benchmarking the SSDs VS 300GB SAS drives VS 1TB WD Blacks but life got complicated and the benchies got cast aside lol.

I'm tempted to put it up on the Marketplace >biggrin.gif
post #5322 of 7174
Quote:
Originally Posted by DJZeratul;13725535 
You want 8484 HOST to 8087 TARGET. The host is the controller card, the target is the backplane.

That being said, they do make controller cards with 8087 connectors and backplanes with 8484 connectors, in which case you would be going 8087 HOST to 8484 TARGET, but not in your situation.


Alright, thanks for clearing it up, so, I need a 8484 host to 8087 target.

Which cable do I then need to be able to connect the 4 drives?

http://www.scsi4me.com/images/I3236-xM.jpg - This is the cable that you mentioned above, that I need, which do I need to connect after that, to be able to split it into 4 8087 connectors?

Regards

Fozzie
post #5323 of 7174
Quote:
Originally Posted by fozzie;13739101 
Alright, thanks for clearing it up, so, I need a 8484 host to 8087 target.

Which cable do I then need to be able to connect the 4 drives?

http://www.scsi4me.com/images/I3236-xM.jpg - This is the cable that you mentioned above, that I need, which do I need to connect after that, to be able to split it into 4 8087 connectors?

Regards

Fozzie
The 8087 is capable of transmitting to 4 drives. The Norco case I was looking at prior to getting the Supermicro had a backplane that had connectors for 24 drives, and had 6 8087 connectors. each one of the 6 connectors went out to 4 backplane connectors for the drives.

The backplane allows you to slide a drive in to a powered and data-ed connector. all you need to do is slide it in and it works, no extra cables are necessary.
Edited by DJZeratul - 6/3/11 at 3:44pm
    
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post #5324 of 7174
Quote:
Originally Posted by DJZeratul;13742393 
The 8087 is capable of transmitting to 4 drives. The Norco case I was looking at prior to getting the Supermicro had a backplane that had connectors for 24 drives, and had 6 8087 connectors. each one of the 6 connectors went out to 4 backplane connectors for the drives.

The backplane allows you to slide a drive in to a powered and data-ed connector. all you need to do is slide it in and it works, no extra cables are necessary.

Ah, alright, thanks alot for the information, I'll look up the Norco chassi and see if it is as you say.

But yeah, thanks, It's alot clearler now.
post #5325 of 7174
Quote:
Originally Posted by nintari;13738201 
I'm tempted to put it up on the Marketplace >biggrin.gif
Yeah, you should... the cards keep their value pretty well.
    
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post #5326 of 7174
Quote:
Originally Posted by the_beast;13721375 
normally due to incorrect cables. You do have SAS host to SATA target cables and not the other way around?

this is the cable that was used but no drives are detected:

LINK

we will try another cable .... but is can there by anything else? The 6i did not have the SMB issue right?
post #5327 of 7174
Quote:
Originally Posted by Omarko;13751288 
this is the cable that was used but no drives are detected:

LINK

we will try another cable .... but is can there by anything else? The 6i did not have the SMB issue right?
The 6/i could have the SMBus issue depending on the chipset. You would likely see other symptoms though.

Those cables look correct, but I cant say for sure. They dont say specifically what type of cabels they are, or have a pin diagram. It says its used to connect directly to drives, or to backplanes... which if it is a passthrough backplane that is correct, but if its a standard backplane it would be an incorrect application. The wording is ambiguous on the listing.
    
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post #5328 of 7174
The new version of MSM (8.something) has more options ... but I can choose:
a) no read ahead or b) always read ahead ...

Where is adaptative read ahead ??? frown.gif
Edited by LuciferX - 6/4/11 at 8:15pm
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post #5329 of 7174
I have a question about the 5/i
so, I have 8 WD5000AAKX hard drive on this raid card. These are in raid0
But, a little slow.
This setup is ok? What do you think?
I havent got BBU
raid.jpg
post #5330 of 7174
Quote:
Originally Posted by andruida;13757993 
I have a question about the 5/i
so, I have 8 WD5000AAKX hard drive on this raid card. These are in raid0
But, a little slow.
This setup is ok? What do you think?
I havent got BBU

You have no cache at all, hence the crap performance.

Either force write-back (best) or enable the drive caches (better than nothing) if you want better performance. But buy a battery - the added cost over the card & 8 drives is minimal...
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