How to make a mirror, sdd and hdd?

Question

Programming

The point is this. There are 2 disks:
1st sdd for 120GB, OS and frequently used files should be stored there.
2nd hdd for 1tb, files, cache and ssd should be stored there.
The question is, what do you need to make it work like this?
Motherboard with raid?
Download some software?
raid controller?
I have not bought iron yet, but I will go for it this weekend, what do you advise?
Thank you.

Answer 1

kokas what does your question have to do with C++ and programming?
There are bcache and flashcache for caching one block device by another under linux, but you didn’t even specify what kind of OS you will have.

Answer 2

What disk controller and OS? If you want ssd to act as a buffer, cache and speed up the work of other disks, then this is implemented in hardware by CacheCade technology on LSI MegaRaid controllers with a gig of non-volatile memory, more specifically www.lsi.com/products/raid-controllers/pages/megara .. . , programmatically on Linux with various bcache and flashcache, on OSX it is done through Fusion Drive something like this and ask a specific question, which will at least indicate the OS and the intended project.

Answer 3

It's funny. This is when you want to show off in front of the boys, but at the same time you don’t want to figure it out?
- Smari, I have an ssd, now everything is like a cool kid.
- Malorik.
Do you want this in the end? SSD in a mirror with HDD, well, get HDD speed, but why?
For example, you can put a system on an SSD and live with it for a couple of years without worrying at all. You can minimize the amount of recording, put memory, drag the tempo into memory, disable the swap, drag the Google cache to the HDD. But here the speed will drop, it will not be very much sense.
And first of all, SSDs die because they don’t know how to use, there is only one rule, you need to have free space on the SSD with a margin and then you will live happily ever after, you can’t allow a few megabytes to remain, then the cells will definitely fly out pretty quickly .

Answer 4

With the purpose of the computer indicated by you (file garbage can), I don’t see the point in SSD disks at all. Take two terabyte HDDs and drive them into a raid, there are two ways to implement it - software (both Windows and Linux systems can do this), or hardware (it’s better to take a separate controller, motherboards with a built-in raid controller are mostly a waste of money). And to supplement this scheme with a backup screw, this will reduce the load on the mirror and increase the reliability of data storage.