If in case you have a complete of two disks, we advocate utilizing RAID 1 to guard the data in case of failure of certainly one of them. Within the case of getting 3 disks our suggestion is that you simply select a RAID 5 to guard the information in case certainly one of them fails, from 4 disks you should utilize RAID 6 or RAID 10 to guard the data towards the failure of two disks.
Immediately’s working programs for NAS permit us to configure RAID very simply and rapidly, with out the necessity for in depth data, however you could configure it in order to not lose all of your knowledge within the occasion of a number of onerous drives failing.
Ransomware in your PC that encrypts the NAS
Some of the vital risks that we should face is ransomware, a sort of malware that encrypts all our pc recordsdata and asks us for a ransom to have the ability to open them once more. The sort of malware may additionally have an effect on our NAS server if we’ve it linked to a community, which is the most typical. A ransomware that infects our PC may additionally encrypt all the information on our NAS.
To mitigate this ransomware assault that comes from a PC, it’s best to allow snapshots or also called “Snapshots”. This performance of file programs akin to ZFS permits us to take a sort of “photograph” of all the information contained on the disk, in case we’re affected by ransomware, we can return and restore all of the recordsdata and folders that we had within the earlier «photograph». It is rather vital that you’ve this function activated to keep away from knowledge loss in case of unintentional deletion or ransomware on the PC.
Ransomware on the NAS
Safety vulnerabilities are the order of the day, cybercriminals at all times need to exploit a number of vulnerabilities to take management of our NAS, after which infect it with ransomware that encrypts all the information contained in it. On this state of affairs, the snapshots or snapshots are nugatory, as a result of if, as a result of a vulnerability, they’ve accessed with administrator permissions, they will even have deleted these snapshots, due to this fact, we’re completely “offered”.
That is probably the most severe state of affairs that we are going to face, as a result of we can not get well the information until we pay the ransomware ransom or get well an off-NAS backup that we’ve made. Many producers over the months have been affected by the sort of severe vulnerability, inflicting customers to lose all their knowledge and restoration is basically difficult.
If it’s a must to entry your server from the Web, at all times do it with a VPN, both the one configured on the router or the one configured on the NAS itself, however you must by no means expose the working system administration web site to the Web, nor another vulnerable service. from being hacked by cybercriminals.
What to take action that the recordsdata are protected?
In order for you your recordsdata to be safer in your server, you must make recurring backups on completely different media. The best can be to make a 3-2-1 backup as we defined to you in RedesZone beforehand, this backup scheme consists of:
- Make 3 backups.
- Retailer the backup on two completely different media, for instance, one other NAS that solely connects for these backups or within the cloud.
- Retailer a backup offline, for instance, on a DAS that’s solely powered on for backup.
One choice that we advocate you strive is to retailer the backup within the cloud akin to pCloud, proper now you possibly can strive pCloud fully free and have 10GB of cloud storage. Within the occasion that it really works effectively for you, you should purchase a subscription of 2TB of capability within the Cloud for about €350, as well as, it’s appropriate with the WebDAV protocol so you possibly can combine it into your server simply and rapidly. In fact, you may additionally use the everyday Google Drive, Dropbox, OneDrive and different extra superior choices akin to Amazon S3 amongst others, on this means, your knowledge will probably be within the non-public cloud however additionally, you will have it replicated within the Cloud in case a catastrophe happens.