First:
I don't have any opinion about the
sizes you've selected, since storage needs are entirely dependent upon the use of the system. For example, that 850GB
/home partition may sit nearly empty and unused. Or, the 850GB may not be enough. It depends what you plan to use the partition for. Or any of the partitions. Keep in mind:
you do not need to pre-allocate space if you do not yet know what your needs are.
- Re-allocating system partitions must be done in single-user mode, since you can't "move" data in use by running services, and you certainly would not want to force umount(8) a filesystem with files open for writing.
- Re-allocating a root partition requires booting the RAMDISK kernel, as discussed above.
Second:
Your service provider has given you a 5GB system in a single partition., apparently pre-configured. That may or may not be enough space for your intended "system" even if application data is stored in other, new partitions.
Talk to them.
- They provide your server to you.
- You pay them.
- They know what they did.
- They know why they did what they did.
- They may have recommendations, which should supersede any advice you get from a bunch of OS users on the Internet.
All very good reasons to speak with them first.
Third:
I recommend you install this OS on a hardware platform you control yourself. One that you can touch and feel. Where you can practice, safely make administrative mistakes, and learn.
A remote platform out of your operational control is not conducive to learning.