TVS-882 and QM2 card

[tecrp7]

Yes it is a TVS-882. The card only physically fits in one PCI slot.

If you open it up and look at it from the back, it is the slot on the right side of the MOBO, opposite of the CPU.

[tecrp7]

Oh also, I personally only trust Samsung chips. I have tried other SSD's (not m2's) from other manufacturers and I had failures with them. I have owned the Samsung SSD's since their 830 model. I own about about 10 Samsung SSD's.

[gregoinc]

Yes it is a TVS-882. The card only physically fits in one PCI slot.

If you open it up and look at it from the back, it is the slot on the right side of the MOBO, opposite of the CPU.

Thanks for that.

So not these slots in the CPU compartment, but the one on the opposite side in the drive bays compartment?

Agree on your comments re SSD brands. I will probably use the same Samsung M.2 PCIE cards.

[tecrp7]

Yup, not those slot(s). TVS-882 only has one slot on the CPU side and one opposite of it.

[gregoinc]

Received my QM2 card today. Here's some photos...









Picking up my Samsung PCIE M.2's tomorrow, so will take some install photos.

[schumaku]

Yes it is a TVS-882. The card only physically fits in one PCI slot.

Due to the connectors, due to already installed cards, or due to the bracket pre-installed?

QNAP does write "Note: TVS-x82(T) only supports the System Zone PCIe slot" on the Accessories -> QM2: M.2 SSD/10GbE PCIe Expansion Card, but not providing further details in the QM2 Installation Guide yet).

To me the installation process for the TVS-x82 is not clear, I'll continue digging with the QNAP product manager in charge.

Regards,
-Kurt

[tecrp7]

Yes it is a TVS-882. The card only physically fits in one PCI slot.

Due to the connectors, due to already installed cards, or due to the bracket pre-installed?

QNAP does write "Note: TVS-x82(T) only supports the System Zone PCIe slot" on the Accessories -> QM2: M.2 SSD/10GbE PCIe Expansion Card, but not providing further details in the QM2 Installation Guide yet).

To me the installation process for the TVS-x82 is not clear, I'll continue digging with the QNAP product manager in charge.

Regards,
-Kurt

Hey Kurt.

The CPU fan assembly is in the way. Not by much, but enough that hinders the installation on that side of the MOBO. If i find some time I will try to take pictures of it the next time I have it apart.

[jds580s]

Yes it is a TVS-882. The card only physically fits in one PCI slot.

Due to the connectors, due to already installed cards, or due to the bracket pre-installed?

QNAP does write "Note: TVS-x82(T) only supports the System Zone PCIe slot" on the Accessories -> QM2: M.2 SSD/10GbE PCIe Expansion Card, but not providing further details in the QM2 Installation Guide yet).

To me the installation process for the TVS-x82 is not clear, I'll continue digging with the QNAP product manager in charge.

Regards,
-Kurt

Hey Kurt.

The CPU fan assembly is in the way. Not by much, but enough that hinders the installation on that side of the MOBO. If i find some time I will try to take pictures of it the next time I have it apart.

Thanks, I've been wondering about that footnote since first seeing it on the product page.

[tecrp7]

gregoinc,

Just a side not, if you need to swap out the attachment plate that is on the card to a bigger size, I had to tap/die the screws and the holes due to the screw not screwing in smoothly. Hopefully your plates are better manufactured.

QM2 Screws.PNG

[schumaku]

The CPU fan assembly is in the way. Not by much, but enough that hinders the installation on that side of the MOBO. If i find some time I will try to take pictures of it the next time I have it apart.

Thank you, no pictures required! Got the same confirmed by the QNAP PM in the meantime.

I had to tap/die the screws and the holes due to the screw not screwing in smoothly.

Have several sets of alternate mounts, and quickly swapped them all - no problems at all, perfect fit as expected in thread and distance.

[ricardoghunter]

Received my QM2 card today. Here's some photos...









Picking up my Samsung PCIE M.2's tomorrow, so will take some install photos.

Curious to know whether the QM2 card is actually PCIe 2.0 x4. As others have mentioned, that would create quite the bottleneck for those Samsung SSDs- so I am interested to know what kind of throughput you got in testing.

[tecrp7]

IThis is what the TVS-882 is reporting on the Samsung 960 Pro's:

QM2 speed.PNG

I posted rough speeds earlier in the thread:

I have two 960's in RAID 0 and I am getting roughly 500mb/500mb read/write. I'm not a NAS guru so I am not sure if I have everything configured correctly but I was expecting to see at least NVME speeds. In RAID 0 I am barely scratching the surface for speeds.

[tecrp7]

Here is a screen cap of Crystal Mark: I was using a different program before and didn't realize it was MB and not mb. So if I time those number by 8 bits I would get over 4000mb correct? Still a little slower than I would think with NVME's in RAID 0. However, like I said, I am not a guru in NAS/storage so please correct me if I am wrong!

CrystalMarkNVME.PNG

[rafale]

Here is a screen cap of Crystal Mark: I was using a different program before and didn't realize it was MB and not mb. So if I time those number by 8 bits I would get over 4000mb correct? Still a little slower than I would think with NVME's in RAID 0. However, like I said, I am not a guru in NAS/storage so please correct me if I am wrong!

CrystalMarkNVME.PNG

No these are pretty catastrophic. I am a bit shocked that the card only supports Gen2 PCI-E. All the SSDs are Gen3 these days.
A single 950 Pro gets 2200/1500 in seq on my NUC:

CrystalDiskMark 5.2.1 x64 (C) 2007-2017 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 2257.613 MB/s
Sequential Write (Q= 32,T= 1) : 1464.891 MB/s
Random Read 4KiB (Q= 32,T= 1) : 508.758 MB/s [124208.5 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 355.223 MB/s [ 86724.4 IOPS]
Sequential Read (T= 1) : 1694.931 MB/s
Sequential Write (T= 1) : 1470.745 MB/s
Random Read 4KiB (Q= 1,T= 1) : 54.652 MB/s [ 13342.8 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 188.831 MB/s [ 46101.3 IOPS]

Test : 1024 MiB [C: 15.3% (72.7/476.0 GiB)] (x5) [Interval=5 sec]
Date : 2017/05/17 13:50:44
OS : Windows 10 Professional [10.0 Build 15063] (x64)

[Axamus]

PCI-E Gen.2 x4 speed is 2000 MB/s. You have to SSD there, so don't expect more than 1000MB/s.
Bottleneck is PCI-E bus and maybe QM2 card. No need for RAID 0 because your SSD is faster that bus bandwidth. Try with RAID 1 or without RAID.

With single drive you can get up to 1600-1700 MB/s. With two drives around 800 MB/s per drive.