Question How to use RAID mirrorr on two identical HDD's.

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zgzdgz

Commendable
Jan 13, 2022
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Hello there, does anybody know if it's actually worth it to use RAID 0 mirror on 2 identical hdd's with an identical 2tb storage ? If so, how do you actually do it, I mean, from what I could remember, if one drive fails, the other one, will be used as a backup sorta thing, and in order to use raid, you need to clean all of these drives completely. My bad if I got something wrong, but I really considering doing it.

MSI B550M PRO-VDH, Western Digital Golt 2 TB (x2).
 
When you set up mirror, drives have to be empty.
Setting it up takes seconds.

If you add mirror to existing drive with data on it, then all the data will be copied also to mirrored disk.
Time depends on copy speed.
So if data is 2TB and copy speed is 100MB/s, then
time for mirror creation = 2'000'000 /100 /60 /60 = 5.55h
 
Last edited:
SkyNetRising said:
When you set up mirror, drives have to be empty.
Setting it up takes seconds.
Click to expand...
Really, that fast huh? I could swear reading it on the internet that it could take as much as 24 hours, also, for some reason I don't see an option "Mirror Volume" on any of the drives 🙁.
 
SkyNetRising said:
No.
It will be one mirror RAID volume 2TB total.
Click to expand...
Sorry for asking y'all that much information:sweatsmile: It just that, it's been a while ago since I read about the RAID.
And for some reason I remember that, either an ssd or an hdd drives, have to be in a position that bottom of the drive, faces the bottom of the drive in order to communicate, does that make any sense ?

It will look something like this:
https://imgur.com/a/p6zvmdP
 
zgzdgz said:
In case the other drive fails, I guess something in that meaning. Most critical files are stored online in the drive.
Click to expand...
A RAID 1 only help in one aspect of "data protection"....the physical death of a drive. (Which is relatively rare)

It does nothing for all the other forms of data loss. Accidental deletion, formatting, nasty virus, ransomware, etc, etc.

So, you still need a real backup solution.
And if you have that, you probably don't need the RAID.
 
USAFRet said:
A RAID 1 only help in one aspect of "data protection"....the physical death of a drive. (Which is relatively rare)

It does nothing for all the other forms of data loss. Accidental deletion, formatting, nasty virus, ransomware, etc, etc.

So, you still need a real backup solution.
And if you have that, you probably don't need the RAID.
Click to expand...
Oh so if one drive dies, then the other drive will be like a "clone", but it will not "ressurect" the other drive, since if its dead, it can only be replaced right?
 
zgzdgz said:
Oh so if one drive dies, then the other drive will be like a "clone", but it will not "ressurect" the other drive, since if its dead, it can only be replaced right?
Click to expand...
Its not like a clone, but rather a mirror.
The OS and you, the user, sees but a single "drive". The RAID functionality simply operates with both drives at the same time.
Accidentally delete something...it is gone from both.

In the case of a dead drive, the RAID 1 allows the system to limp along with the the other one , until such time as you can replace it.
Only really needed if you must have 100% uptime. Like if you were running a webstore, and downtime = lost sales.
 
This adds a high level of complexity to achieve what you want.

Take a look a FreeFileSync (or get the paid version). It does mirror the data to whatever drive you want. it lets use filters to exclude files/ folders, etc.

Its sync / backup options include Mirror / Update / One Way and Custom backups. It has a Real Time function to watch for changes in folders or drives and backup immediately.

FreeFileSync
Edit: Actually, it's totally free and accepts donations. There is no paid version.
 
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