Invoices will be issued today.
If data safety and fault tolerance are more important to you, this is RAID 1
It depends on what your goal is:
- Get more disk space, but sacrifice fault tolerance and data safety (disks are combined sequentially)
- Get a high level of protection against failures but less disk space (duplicate data on two disks - mirroring).
RAID 0 uses 100% disk space because all available disks are used.
RAID 1 consists of two duplicate data sets located on two separate disks.
There is a lot of information on the internet about RAID arrays...
https://ru.wikipedia.org/wiki/RAID