The probability increases significantly in large arrays containing many identical large capacity drives from the same production batch. The chances of 2 or more drives failing simultaneously in a fault-tolerant RAID are quite slim.
A few times I've seen it transfer at around 60 MB/s. Data transfer can dip to less than 100MB/s in an uncongested gigabit network. I had RAID6 running on my original 6 x 3TB array and it was slow as hell. Although I am very skeptical the probability of 2 drives failing at the same time to be highly unlikely but not impossible and I am giving it the benefit of the doubt. The data on the external USB HDD is not up-to-date, hence the reason for RTS.Īll those talk about 2-drive failure in a RAID1/5/10 had me worried. Let's take off-site backup out of the picture for now. I understand if the house burns down, I could lose everything (I am betting the odds of that happening to be NEVER ). ThanksĬurrently my data has backup redundancy: 1) RAID5 on NAS, 2) external USB HDD and 3) Backblaze.Įventually, I wanna cut BackBlaze as it cost $$$ That leaves #1 and #2 only, which are in the same house. Forgot to take ransonware/viruses into consideration.
#Qnap duplicacy full#
To ensure the safety of your data, you should strongly consider making a second full copy, so that you end up with 3 copies of your data: 1) the original on the NAS, 2) the copy on an external device 3) another full copy on another external, off-site device (which can be in the cloud).
That should be the bare minimum basis for your backup plan.
#Qnap duplicacy Offline#
taken daily or weekly) full copy of your data stored on an external device that can easily be taken offline and transported. What you need at the very least is a point-in-time (e.g. Furthermore since you're already using fault-tolerant RAID on the NAS, I see little benefit in using real-time synchronization. RTS could be one component of a backup plan, but it can't be the whole plan. What if you accidentally delete an entire folder of precious files on the NAS, or some files get encrypted by ransomware? Thanks to RTS, the same folder is now deleted, and the same files are encrypted on the RTS mirror. Real Time Syncronization is not a good backup by itself no matter where the copy is stored. With Linux and ZFS, QuTS hero supports advanced data reduction technologies for further driving down costs and increasing reliablility of SSD (all-flash) storage.Q3: Which is better: RTS to a separate 16TB volume within the NAS or RTS to an external 16TB HDD via USB? QuTS hero is the operating system for high-end and enterprise QNAP NAS models. WIth Linux and ext4, QTS enables reliable storage for everyone with versatile value-added features and apps, such as snapshots, Plex media servers, and easy access of your personal cloud. QTS is the operating system for entry- and mid-level QNAP NAS.
0 kommentar(er)
