Super User Asked by ricardo3889 on February 21, 2021
I am building a home ubuntu server mainly file sharing. I have a 100G SSD drive in which I want to install the system, and I have two 4T HDDs that I want to use as mass storage and mounting point for users’ home directory. My question is what you all think it is the best way to format and combine the drives to primarily maximize storage and make it somewhat robust.
I am pretty sure I will use the SSD for the system files, so the question more specifically how to use the remaining two HDDs. I considered:
A) formatting each individually (ext4), and mounting them as two separate drives, and have one storing regular backups.
B) Merging those two HDDs using LVM to create a 8T VG.
C) same as B but with some RAID 0 (faster?) or RAID 1 (for added redundancy?)
D) Having one HDD as the main storage space formatted as LVM in case I want to expand it later, and having the second one as a standard partition to keep backups, cloud storage, non-important files, etc.
A backup kept in the same box is no backup. A PSU failure, fire or ransomware attack will wipe both your data and the copy. With that out of the way, let's tackle the question.
We can't tell you what's the best way without knowing what your requirements are.
All of these strategies assume you have external, independent backup. If maintaining backup this large is more of a problem than possible data loss, SnapRAID can be a reasonable compromise (be sure to read about its limitations). It mixes well with union filesystems too.
Answered by gronostaj on February 21, 2021
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