Trying to squeeze some more storage in my MiniPC. I have questions about these. These use hardward RAID with selectable modes (Individual/JBOD/RAID1/RAID2).
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If I use RAID 1 and one of the drives fails, will I know?
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If a drive fails, and a slap in a new one, will it internally begin repairing RAID 1 again?
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Can I use these as “individual” or JBOD and have 2 separate drives through the same connector, and use something like TrueNAS to software-RAID them?
Neat, but I see it personally as the worst of both worlds, unless you have a bunch of NVMEs sitting around.
You’re going to be bottlenecked by SATA speeds, so even one NVME would be bottlenecked, let alone 2. So for me, going with a larger SATA SSD (which you could of course RAID with another) would probably get you still better speeds.
Then you have issue of it breaking. Personally, I have never had good luck with secondary board RAID items like this. They always fail after a while. The only stable raids I have seen are motherboards and SAS. Whenever I see “Make this interface into another RAID” I think of the… 5-7 failed cards sitting behind me.
unless you have a bunch of NVMEs sitting around.
SATA, not NVMe.
You’re going to be bottlenecked by SATA speeds
Speed is not a concern for me.
If you don’t have a bunch of nvmes lying around that you want to use, then why not just go for a few sata drives and raid those together? You do what you like, to me that just seems like more storage for your buck
Just as an uninvolved third party, I’m trying to figure out how NVMe entered this response to a question about a SATA to SATA form factor converter
If speed isn’t the concern I would use Sata drives. They are cheaper anyway
M.2 is a form factor. Under that form factor it can run the NVMe or the SATA protocol.
Answered elsewhere in this thread. Yes, I’m aware, but the only real life use case is plugging in nvme drives
There are m.2 sata drives. They have a different pin layout and everything. It depends on what you want out of the QoS of your system and what bottlenecks you have.
You fan pretty effective software raid with Linux built in drivers. No need for hardware raid, specially not cheapo ones…
Running Linux software raid for 20+ years with zero issues… Currently on USB3 and USB-C disks, but in the past all kind of mixed solutions (ide/sata/esata/USB/FireWire…).
Speed is not a big issue in my experience if you consume your media over network anyway.
I’m not saying this rudely. This sounds like a “read the manual” moment, since different vendors can have different settings.
Or at least links to the exact one you are looking at.
I couldn’t find any manuals. Nothing that referenced my questions. Thought maybe there was just a “conventional” way that these functioned.
https://www.qnap.com/en/product/qda-a2mar seems to be the one in your image. From the users guide it seems it does everything you listed. The prices I’ve seen are about 100 € / $ though plus the two SSDs you need, personally I’d invest in external backup instead, that covers more data loss scenarios than this adapter.
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:
Fewer Letters | More Letters |
---|---|
NAS | Network-Attached Storage |
NVMe | Non-Volatile Memory Express interface for mass storage |
PCIe | Peripheral Component Interconnect Express |
RAID | Redundant Array of Independent Disks for mass storage |
SATA | Serial AT Attachment interface for mass storage |
SSD | Solid State Drive mass storage |
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IF JBOD, && Linux, THEN yes you can know, through SMARTTOOLS, or something like that…
However, I can’t imagine how you’d get 2 separate PCIe
( presuming NVMe devices …
… no, this thing must be presuming SATA, NOT NVMe …
even in SATA, there’s no bifurcator for SATA, I don’t think:
SAS has expanders, which can take a single SAS channel & attach something like 128 SAS devices onto it,
PCIe has some kind of equivalent, and there is a PCIe card which crams loads of NVMe’s into it, out in the last year, but SATA??
Hmm… )
shrug
Super cool. I didn’t know this existed.