Welche Speicher-Aufteilung bei einem NAS ist am besten, wenn man Daten sichern/spiegeln will?
Ich habe mir ein NAS DS223J zugelegt. Darin sind 2x 6TB Festplatten.
Ich möchte auf EINE dieser Festplatten alles an Daten “abladen”, v.a. eigene Fotos, Dateien (Word, PDF usw.), Urlaubsvideos usw. – Festplatte F1.
Ich möchte auf der ZWEITEN Festplatte alle Daten von F1 spiegeln im Sinne von sichern = Festplatte F2. Geht F1 kaputt, habe ich noch F2 und umgekehrt.
Diese Spiegelung soll in Echtzeit stattfinden oder über Nacht.
Frage:
Erstelle ich EINEN Speicherpool mit 2 Stück Volumes (“Speicherpool” mit Volume 1 und Volume 2)?
Oder erstelle ich ZWEI Speicherpools mit jeweils 1 Stück Volume (“Speicherpool 1” mit Volume 1 und “Speicherpool 2” mit “Volume 2”)?
(2 votes)
Loading...
What you are looking for (probably) is a RAID1 configuration, whether managed as a dedicated RAID1 or via SHR does not matter in use. This is then only a technical finesse whether it is a pure MD device, or an LVM (logical volume) is switched in between, because SHR offers the possibility of more dynamic changes.
But you must not forget and overlook that you are only protected against the physical failure of one of the two hard drives with this configuration!
This means a short circuit, water damage, fire, or theft or also in case of accidental deletion or ransomware, of course, both data carriers would also be simultaneously damaged/destroyed.
It is therefore advisable to install an external backup hard drive into the concept on which at least the most important data are “offline” and are regularly updated.
You’re going to the storage pool manager, and you’re putting both records in a Raid-1.
Then you start the volume or several.
The plates are mirroring, but they have to keep an eye on this thing.
If a plate fails, it threatens immediate danger.
Thanks for the answer! RAID 1 or is the “SHR” offered by Synology? According to Raid-Rechner (from Synology), this is almost the same place.
I mean, in the case of two plates, it’s the same.
At hardware level, I would have sworn at R1. Then the controller disables it, otherwise it is made via OS and file system.
According to my knowledge, the NAS’s OS is already at software level, so no matter.
Okay, thanks.
The answer from is the only correct one: what you want is that the stored data is immediately (preferably) secured to the second disk. This corresponds to a RAID-1. Each write access is made immediately on both plates. If you fail, you still have the second. Then it means quickly replacing the defective plate.
This is adjustable within the NAS – with Bunti clicki.
Thank you very much.
You’re creating a Raid-1 system. Then the first plate is mirrored yutomatically (at each lettering) onto the second plate.
Attention: This is just a back-up system that protects against hardware failures.
This does not help against human stupidity or against hacker attacks. Because if data is deleted or encrypted on a hard drive, it happens simultaneously on both hard drives.
To increase data security, copy the data repeatedly to an external HDD, which is then separated from the computer.