07-07-2018 05:19 PM
This 480GB drive will work in your WWAN slot:
It's pcie, not sata.
I have the 240GB version installed in the WWAN slot in my t580.
07-19-2018 10:56 PM
I haven't done any benchmarks on it but it runs fast for me (a SATAIII SSD was fine for me so anything NVMe is mostly overkill 90% of the time). I run VM's on it that don't do a lot of I/O. I have a 512GB NVMe SSD primary disk and the 512GB toshiba in the WWAN slot and then 32GB of memory in this machine and it's a nice package that's still pretty thin/light with the 3-cell battery (the 6 cell is huge).
To answer your question: The T480s cannot run this configuration; the WWAN slot cannot run an M.2 NVMe SSD. That is preciecely why I had to go with the T480 over the T480s; I needed that extra onboard SSD. Note, the T480s uses 4 PCIe lanes for it's storage device so you'll get a lot performance (IOPS and GB/s) out of it. The T480 uses only two PCIe lanes for the primary SSD and two lanes for the WWAN slot so that is the compromise there.
Like anything, there is always a compromise.
Google "t480s platform specifications" for more info on the T480s.
07-20-2018 03:35 AM - edited 07-20-2018 03:44 AM
Thanks for your reply. Yes, I've already seen those specification but I think it's really strange... at least 1 lane has to be present otherwise how can the WWAN card work?
Reading the T480 specs they say it can also work with 4 lanes:
"Some: M.2 SSD / PCIe NVMe, PCIe 3.0 x 4, 32Gb/s"
07-20-2018 07:37 AM
Yeah I mean your logic is the same as mine; I just haven't seen anyone that's made it work (or tried). To be honest though, I haven't researched it much.
Regarding the T480 and 4 lanes - there was a big discussion about it and it seems that the platform spec sheet is incorrect or perhaps vague. You can read more about it here: https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/T480-M-2-2280-SSD-slot-has-only-2-PCIe-l...
At the end of the day, I think a single 1TB NVMe SSD in a T480s would probably have been fine for my use case; however, I didn't want to take the chance of having a bunch of disk related issues with my host OS because the guest VM's were using a lot storage IO. The T480s is a bit thinner, sleaker, lighter and uses some nicer materials - I love that machine but it just didn't quite fit my requirements.
07-20-2018 02:51 PM
I haven't actually measured the temperature of it nor have I researched software that may be able to get the information from the platform but I don't notice anything abnormally warm. Seems to run just fine but I do not do anything storage intensive with my machine.
07-25-2018 09:37 AM - edited 07-25-2018 09:49 AM
RC100 uses a SoC design which features both the SSD controller and the NAND flash on the same chip. This means less surface to dissipate heat compared to other SSD models.
Anyway... on T480s it works!
... and it works pretty well!