[ADVICE] Partitioned NVME with PVE & scratch/cache vs no PVE, instead on a 2.5?

ersatz.feign

New Member
Aug 24, 2020
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Hope everyone had a lovely weekend!

Huge thanks in advance if you can spare a few seconds to help out with your thoughts. I realise much of this could be subjectivly case-specfic but after so many many hours of research with so many conflicting opinions, I thought I would turn to the lovely people here to see what the latest opinions are regarding my specfic use case which my research fu hasn't found anything similar.

TL;DR - As per title really, I guess.

I'm building my 1st Proxmox box which will initially be used as a workstation before eventually being retired to a server of sorts.

• Use case

App development, video editing, advancing my K8 skills, playing with configurations, etc.

• Spec

For clock speed and other requirements, it's a Threadripper with 128GB 3600MHz RAM and however many GPU's the IOMMU groupings will allow. Onboard 10Gbps LAN, 8 x SATA 6G/s, etc.

My Zenith Extreme Alpha board has a single on-board M.2 NVME slot but comes in the box with a dual adaptor for 2 more M.2 NVME's so 3 in total which I'm keen to utilize. (I thought it had an additional U.2 option so was going to run 2 NVME's in RAID1 for PVE and the another two in RAID1 for the VM's but looks like no dice.)

• Couple of questions

Q1 -- Firstly, trying to figure out if I should go for 3x 1TB Corsair Force MP510's or 3x 2TB bearing in mind I don't play games and will backup on 2.5's/spinners?

Q2 -- Most importantly trying to work out the pros and cons of:

a • Running the VM's in RAID1 on the dual adaptor and PVE in RAID0 onboard - perhaps with the majority of that partinoned as a scratch/cache drive (but no idea if PVE will like that?)

b • That onboard slot being used instead as a scratch/cache disk and running PVE from a high TBW 2.5 SSD - perhaps with it's logging to a cheap HDD?

c • Something else?

Q3 -- If PVE is best in that onboard NVME then what would I use the remaining space for bearing in mind it'll'd be RAID0, unless I pool it someway with 2.5's? I guess it could be partitioned to be the scratch/cache disk- yea, nay?

• Wrapup

Until it becomes a server down the line, I'm not too bothered about service disponibility or time to recover after a indisponibility/crash event. As long as I don't loose data/work and am optimizing the hardware to some degree, I guess I'll be content to begin with.

KISS if it makes sense but not afraid to get my hands dirty whilst cutting my teeth.

I think that's everything but I'm so tired, it's very likely I've missed stuff - ha.

Absolutely massive thanks in advance if anyone has any pointers as my head is spinning after so much research to and fro!

Cheers!

EDIT: spellings
 
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