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Hartmannsson
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Posts: 19
Registered: ‎03-01-2019
Location: GB
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Message 1 of 7

P72 Xeon RAID?

This is my first posting here but a long time lurker.
I've just bought a P72 (E-2176 Xeon) workstation to replace my trusty P50 and as I'm in the process of getting the older one ready for selling I'm looking into perhaps using the two Samsung 970 Pros in the P72 (I still have the original 1TB PM961 that came with the P50).

Here's my question though, is it worth it to set up a RAID0 in the P72?


I'm a software developer and a connoisseur of high end electronics so I like to be at the ultimate performance (even when something less 'will do').


The reason for my doubt is that when upgrading the P50 from a 1TB Samsung PM961 to two 512GB striped / RAID0 it didn't make a noticable difference.
The P50 is kitted out to the max with a Xeon E3-1535m-V5 and 64GB non ECC RAM (of which 8GB are used for a RAM disk for all the temp folders, Windows, browsers etc.).

So anyone had experience with RAID0 on a P72 or has a story to tell?


P72 Xeon 96GB (2x 970 Pro RAID0 soon) | X1 Carbon 16GB 1TB
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Message 2 of 7

Re: P72 Xeon RAID?

When you say "noticeable", do you mean when you are doing any real work or when running a benchmark test?  If you are talking about real work, you are going to need to be specific on what you are actually doing so someone doing similar tasks, but I am doubtful that you will find someone.  In real life, when you are writing to a disk, a RAID0 helps only when the reading or writing to the disk is the actual bottleneck.  The SSD you are talking about is quite fast and you would need to be doing work that sent data through the controller and over the bus faster than the drive could handle it, so that the data can be striped over two drives.  If the application you are running cannot deal with the data fast enough or the bottleneck is the PCIe bus, the RAID will add complexity with no benefit.

 

If you are talking about getting higher scores in a benchmark, you need to say what program is being used to calculate the score.  My experience has been that with 2 disk setups, often, 1 drive appears faster using one benchmark program and a different program yields a different winner.


Rich


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Hartmannsson
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Message 3 of 7

Re: P72 Xeon RAID?

Interesting you mention that in certain cases it could actually be slower.  When I benchmarked the RAID setup and compared against the X1C I have the results were around 2,300 for the RAID and 2,900 for the X1C (CrystalDiskMark Seq Q32T1).  Quite disappointing for the P50 but good for the X1C (1TB PM981).  I've just ran the same for the P72 and am getting 2,900 for some Intel 6000 seried SSD.  Maybe the RAID controller in the P50 just isn't up to scratch?

 

I do like benchmarks but what I'm ultimately after is just to run my development environments & databases faster.


P72 Xeon 96GB (2x 970 Pro RAID0 soon) | X1 Carbon 16GB 1TB
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Message 4 of 7

Re: P72 Xeon RAID?

Hello,

I am in the process of configuring a ThinkPad P72 (MTM 20MB0021US) I received recently, and am setting it up with two of the Lenovo

ThinkPad 1TB PCIe NVME TLC OPAL M.2 SSDs (P/N 4XB0N10301) manufactured by Samsung (PM961 or PM981?) in a RAID0 array.  This is the model with the Intel Core i7-8750H CPU, not a Xeon like yours, but I could try running some disk I/O benchmarks on it if that would be of interest.

Keep in mind, though, as  noted, that RAID0 isn't likely to offer a noticeable performance increase outside of certain edge cases, like benchmarks.
 
Regards,
 
Aryeh Goretsky
 


I am a volunteer and neither a Lenovo nor a Microsoft employee.

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Hartmannsson
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Posts: 19
Registered: ‎03-01-2019
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Message 5 of 7

Re: P72 Xeon RAID?

That would be interesting yeah.

From my post above, I think it would be a wasted opportunity for me not to try the two 970s striped in the P72 before deciding if I sell them with the P50.  Just need time to do it!


P72 Xeon 96GB (2x 970 Pro RAID0 soon) | X1 Carbon 16GB 1TB
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Message 6 of 7

Re: P72 Xeon RAID?

The two primary advantages of RAID 0 configuration on the P72 is the summation of the storage AND the parallel writes/reads allowed. I'm running RAID 1 on my P70 for data integrity and the reads/writes are about the same as they would have been with a single SSD. However, you do have the ability with the Intel RST to set the write buffering to be immediate instead of using the Windows write buffering. The Samsung SSD does have the capability to keep the power on enough to finish a write should the system totally shutdown but I've never experienced that in 3 years of running. There should definitely be a difference in real-world applications in the I/O performace compared to a single storage device.

 


P70 XEON 1505, BIOS 2.29, UHD 4k Display, 64GB non-ECC RAM, M3000M NVIDIA GPU, RAID 1 512GB Samsung 951 PCIe-NVMe SSD x 2, 2x Samsung 850 Pro 1TB SSD. EM7455 WWAN
P1. BIOS 1.21,Xeon Processor, 32GB, PM981 1TB x 2, RAID 1
T470s, 16GB RAM, BIOS 1.10, i7-7500, WQHD display, 512GB PM961 PCIe NVMe SSD
GTgamo
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Message 7 of 7

Re: P72 Xeon RAID?

I have a P51 Xeon with 64gb ECC ram - set up with a pair of 1tb 960 Pro drives in a mirror RAID 1 configuration. This thing is smoking fast, and i use Autocad, Pro E, and Photoshop on a regular basis

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