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PERC 5/i RAID Card: Tips and Benchmarks - Page 385

post #3841 of 7188
Quote:
Originally Posted by DJZeratul View Post
1 and 3 should technically be "continuous" on a voltmeter because if you connect them together it forms a DC circuit (positive red and negative black). It would be like if you removed the red and black leads off your car battery and hooked a volt meter up to them, it should create a continuous circuit (don't do this on the battery in real life unless you have a really beefy voltmeter )

Also, the battery itself isn't continuous when 1 and 3 are connected and a continuity test is run. I'd imagine that if I switched to DC voltage it would show the proper 3.7 since the PERC reads it. I imagine the yellow wire is for sensing temperature. What about the white? Wish I could find a pinout or datasheet or something.
post #3842 of 7188
Quote:
Originally Posted by GregOP83 View Post
I've attached a few oddities in my raid5 performance below. I don't know how but I accidentally deleted the originals that I made right after creating the array. Basically, take all the major spikes out of the benchmarks and you'd have what I got originally. Now I've got these massive spikes and I'm not sure why. I've forced WB since my BBU is not charging. I could try always read ahead instead of adaptive. Maybe it's just a file-system thing since there is about 562GB on it now (2.32TB total available). It could also be the controller not liking that the BBU is no longer charging.




Perhaps check MSM and see if its running anything on the array (BGI, Patrol Read, etc)

Also, is the array just a storage drive or is your OS installed on it?

Quote:
Originally Posted by GregOP83 View Post
Also, the battery itself isn't continuous when 1 and 3 are connected and a continuity test is run. I'd imagine that if I switched to DC voltage it would show the proper 3.7 since the PERC reads it. I imagine the yellow wire is for sensing temperature. What about the white? Wish I could find a pinout or datasheet or something.
If 1 is red and 3 is black (or other way around, whatever), the battery should be continuous on 1 and 3 if you run a continuity check. It should also cause a short circuit until you let up off of it. Its the same as if you were to check continuity on a AA battery, red on + and black on -, it would show it as continuous.
Edited by DJZeratul - 1/11/10 at 12:22am
    
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post #3843 of 7188
Quote:
Originally Posted by DJZeratul View Post
Perhaps check MSM and see if its running anything on the array (BGI, Patrol Read, etc)

Also, is the array just a storage drive or is your OS installed on it?
Purely a storage array. Raid 5, 1MB Stripe, Adapt RA, Cached I/O, WB Forced, disk cache policy enabled.

Not sure how to check if a Patrol Read is occurring in the background, from what I understand, it always is until there is disk activity. No CC, BGI or anything that you can monitor the % on.


Quote:
If 1 is red and 3 is black (or other way around, whatever), the battery should be continuous on 1 and 3 if you run a continuity check. It should also cause a short circuit until you let up off of it. Its the same as if you were to check continuity on a AA battery, red on + and black on -, it would show it as continuous.
Yeah, regardless of what order I held it in ( red tip of multimeter to 3 black to 1 or vice versa) I never got a sound from the dell battery.

Doing this on a AA results in no sound if you hold the red tip to the positive and black tip to the negative, it does show the voltage at the same time though, 1.8V. In the reverse, black tip to positive, red tip to negative, I get -.5V and a sound. I assume that is because resistance is different depending on which way you apply the voltage?
post #3844 of 7188
Quote:
Originally Posted by GregOP83 View Post
Purely a storage array. Raid 5, 1MB Stripe, Adapt RA, Cached I/O, WB Forced, disk cache policy enabled.

Not sure how to check if a Patrol Read is occurring in the background, from what I understand, it always is until there is disk activity. No CC, BGI or anything that you can monitor the % on.
your MSM log should say something like this

2956[Information, 0]2010-01-10, 03:31:33Controller ID: 0 Patrol Read complete
2948[Information, 0]2010-01-10, 00:12:53Controller ID: 0 Patrol Read started


Quote:
Originally Posted by GregOP83 View Post
Yeah, regardless of what order I held it in ( red tip of multimeter to 3 black to 1 or vice versa) I never got a sound from the dell battery.

Doing this on a AA results in no sound if you hold the red tip to the positive and black tip to the negative, it does show the voltage at the same time though, 1.8V. In the reverse, black tip to positive, red tip to negative, I get -.5V and a sound. I assume that is because resistance is different depending on which way you apply the voltage?
Oh, your volt meter is different than mine then

Did you say you got a voltage readout from the dell battery?
Edited by DJZeratul - 1/11/10 at 1:00am
    
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post #3845 of 7188
Quote:
Originally Posted by DJZeratul View Post
your MSM log should say something like this

2956[Information, 0]2010-01-10, 03:31:33Controller ID: 0 Patrol Read complete
2948[Information, 0]2010-01-10, 00:12:53Controller ID: 0 Patrol Read started



Oh, your volt meter is different than mine then

Did you say you got a voltage readout from the dell battery?
Yeah, I get a voltage readout of 3.681V and it shows 43mAh left ( when I first plugged it in it showed 1132 mAh or something. So I know it worked, discharged, and never worked again. It shouldn't be that complicated of a system. Positive, Negative/Ground, Temperature wire, but what are the other 2. There is Red,Black,White, Green, Yellow. I think yellow is the temp sense, but white and green? Maybe one keeps track of how many charge cycles it's been through. It does show a cycle count of 14.

Oh and the last patrol read completed 24 hours prior to running those benchmarks.
Edited by GregOP83 - 1/11/10 at 1:33am
post #3846 of 7188
Quote:
Originally Posted by the_beast View Post
Anyone in the UK want a bargain (with a slight risk...)?

This auction is listed as a SAS 6i/R, but the picture clearly shows a PERC 6/i, and the auction refers directly to the picture - so if a SAS card turns up you can send it back as the item is not as described. In the UK that means a full refund including shipping and any charges incurred.

A bargain for 60 notes shipped. I'd buy it myself if I didn't already have 3...
I sent the seller a question asking if the pictured card was the item for sale, which it was. So I am taking the risk (GBP69.99 - roughly AUD$125 shipped to W. Aust.). Like you said, if what turns up isn't what's pictured I have his response to back me up
post #3847 of 7188
Quote:
Originally Posted by Speedst3r View Post
I sent the seller a question asking if the pictured card was the item for sale, which it was. So I am taking the risk (GBP69.99 - roughly AUD$125 shipped to W. Aust.). Like you said, if what turns up isn't what's pictured I have his response to back me up
Not to mention, I just got done getting a full refund for a seller on ebay who said "Dell PERC 6/i for Poweredge 1950 2950 UCS-61 RAID SAS" in the title and had a SAS 6/iR pictured. Granted I should have known what the PERC 6/i looks like comparatively but the title was PERC 6/i....Majorly misleading and ebay took care of it with only my initial input on their complain system. Worked great (first time using it, 50+ transaction on ebay so far). Here is the auction:

http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWNX:IT
post #3848 of 7188
I've found that one drive shows up with 246 media errors. I've run a full test in DOS from WD utility using fast and full length tests and it came back with no error. Bad cable? Bad drive but no sign in the WD utility? It is no different then any of my other 4 drives in the array.

The patrol read has corrected all these errors thus far.
post #3849 of 7188
Quote:
Originally Posted by GregOP83 View Post
I've found that one drive shows up with 246 media errors. I've run a full test in DOS from WD utility using fast and full length tests and it came back with no error. Bad cable? Bad drive but no sign in the WD utility? It is no different then any of my other 4 drives in the array.

The patrol read has corrected all these errors thus far.
Yikes, that seems excessive... you should be able to switch cables on the 6/i and it wont mess up the array. I would move the drive to another cable and see if it still happens. You have 5 drives, do you have 4 on SAS0 and 1 on SAS1? Maybe its the one drive that is on the SAS1 connector?
    
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post #3850 of 7188
Hi,

is there any kind of compatibility list? Searched the whole forum but I´m not able to find a compatibility list, maybe I´m too stupid.

Actually I searched in this thread for my Motherboard Gigabyte 965P DS4 rev3.3 and I only found a post about the DS3 where the user says it´s working with the Pin-Mod.

So my question is: Does someone uses the Dell Perc 5/i and the Gigabyte 965P DS4?
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