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[THW] Highpoint Ultimate Acceleration Drive SSD7100: 4TB Of 960 Pro SSDs In RAID 0 - Page 2

post #11 of 97
Quote:
Originally Posted by Nizzen View Post

So what is this:

https://www.komplett.no/product/945185/datautstyr/lagring/harddiskerssd/ssd-m2/asus-hyper-m2-x16-card

Ssme ss highpoint? Intel vroc? tongue.gif

https://www.youtube.com/watch?v=nuNPM0HvpK4

Mentions the Intel stuff

https://www.youtube.com/watch?v=PTibIjzm15I
Edited by bigjdubb - 8/11/17 at 3:16pm
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post #12 of 97
Well, experience so far has been "mixed".... Some caveats (because most systems may have an easier time than I did owing to configuration - dual xeon system loaded up with PCIe x16s):

Linux required a driver addition which was a bit painful as that also required a kernel upgrade which also required my existing HPT RR840A driver to be re-built... I have both the RR840A and the SSD7101 in this sytem now. Reboots on dual systems are not fun and I had to do quite a lot of them.

Performance under linux is terrible - barely hitting 3GB/s sequential in RAID0 (x4). So, into windows to double check and sure enough, Crystal disk shows ~3GB/s tops and terrible random performance (50-100MB/s 4K).

HOWEVER (as I mentioned some caveats), I believe this might be due to the SSD7101 being on CPU1 PCIe lanes not CPU0 (dual system). I was wondering if this might be a problem since my system is pretty full (10GbE , RR850A, 2x1080ti), but I had to try before the rip-up to address this...

So, more to come, but Friday build shenanigans ended with a whimper...

This is why I smh when people say "no one needs x # of PCIe lanes..." - go away porn consumer, some of us have work to do... wink.gif
Edited by cekim - 8/11/17 at 8:16pm
post #13 of 97
Hmm, an update...

TL:DR background:
getting low performance from 4x960 Pro 512 (3-4GB/s) in linux and windows

BUT:
a. dual socket xeon system (2696v3
b. SSD7101A is on CPU1 (not CPU0) PCIe x16 slot

So, I wrote a script to pin hdparm to a particular core and walk up the cores to see the output (the hex number is the core mask for a given run):
0x10000
Timing buffered disk reads: 12428 MB in 3.00 seconds = 4142.32 MB/sec
0x20000
Timing buffered disk reads: 12360 MB in 3.00 seconds = 4119.63 MB/sec
0x40000
Timing buffered disk reads: 14930 MB in 3.00 seconds = 4976.45 MB/sec

0x80000
Timing buffered disk reads: 14790 MB in 3.00 seconds = 4929.45 MB/sec
0x100000
Timing buffered disk reads: 15274 MB in 3.00 seconds = 5090.92 MB/sec

Notice where the throughput bumps up:
0x40000 = Happens to be 1 << 18 (aka cpu1[0] aka: the first core of the second socket aka: the one directly connected to the PCIe slot holding the SSD7101A)

So, this confirms/explains some of the issue, but only 1/2 of it. I should be seeing 10-12GB/s for such a test.
post #14 of 97
Quote:
Originally Posted by Murlocke View Post

I run 2 1TB 960 Pros in Raid 0, and despite the benchmarks showing proper numbers I've yet really to find a program that utilize them. You seem to hit bottlenecks with most applications before the drives can max themselves.

Well yeah, this statement is applicable to pretty much everything to do with computers. People love to quote numbers from sales brochures and benchmark stats with 3% incremental improvements but in real world use it's not worth worrying about.
post #15 of 97
https://www.newegg.com/Product/Product.aspx?Item=9SIAE005U55357&cm_re=Dell_ultra-quad-_-9SIAE005U55357-_-Product

Found the Dell version for $255. Similar in concept just haven't seen it for sale often. Might be an uglier. But just as effective alternative. $255 isn't bad.

EDIT: NM. Seems it is not a good alternative as it doesn't use a PLX chip. Might work for some server motherboards, it not most consumer motherboards.
Edited by richiec77 - 8/13/17 at 8:37am
post #16 of 97
Ok a little more strange information - at this point, I'm going to contact HighPoint:

It functions without any errors reported that I can find in linux or windows in terms of reading/writing data - raid0 and raid10 both read/write without corruption spanned over 4 drives.

BUT
1. mere insertion into my system raises idle temps by 10C+

- I hadn't really noticed this until I took it out to move it to another slot to see if there was an issue with the one I had tried before and/or improvement when I removed other devices. I have a lot of cards in this system.

- Doing ABSOLUTELY NOTHING with the card - just being in there, it must be causing bus cycles of some sort. Nothing that I've noticed performance-wise doing computes, but with 36 cores, you can lose quite a few decimal places of performance here or there without it become obvious unless you are using every last cycle to do computes.

2. moviing it around and confirming, forcing PCIe3.0 x16 makes no difference
- I can get ~7GB/s under windows sequential with 128k chunk size
- Single drive performance simply is not scaling - I get totally normal numbers for a single drive through this device, but 2 or more just don't scale as they should

So, there may be a driver problem or maybe something is odd with my board, but I need more info from HighPoint to debug it because right now every question I ask of the system, board, drives says "fine, good, lovely".
post #17 of 97
double post
post #18 of 97
Quote:

and you can combine more than one in each PC


So wait... you could RAID 12 960 Pros on a X399 mobo, or 20+ on an Epyc board, right? That's insane.
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post #19 of 97
Contacted HighPoint - ticket accepted, but no response yet... Working on getting another more "normal" system together to see if it happens on a single processor system with fewer peripherals...

Given that it drives up my idle clocks and temps doing absolutely nothing, I'm guessing _something_ in the driver layer is broken causing excess traffic/errors/retries, but that's a wild guess. Don't have a bus analyzer to test that theory...
post #20 of 97
Quote:
Originally Posted by 2002dunx View Post

Quadfurcate NOT bifurcate.....

TSK !

dunx

thanks! not only that... Bifurcation is normally done with the Intel CPU registers withOUT a PLX chip. https://hardforum.com/threads/pcie-bifurcation.1870298/ great read
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