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Questions tagged [redundancy]

The tag has no usage guidance.

1
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2answers
75 views

Most ironclad way to make root installation redundant and maximize uptime? RAID, ZFS or something else?

I would like to set up my desktop computer (which is actually a server for the KVM guests I do my actual work in) to have a redundant root installation. If one drive dies I want to quickly get back ...
3
votes
2answers
2k views

How to make systemd-resolved stop trying to use offline DNS servers?

I have configured my DHCP server to supply two nameservers for redundancy, so that if one is offline the other one can be used. I have configured my PCs with systemd-resolved and according to ...
1
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0answers
48 views

ICMPv6 send Multicast Listener Report Message and Neighbor Solicitation

I am configuring ucarp on two on my pc router ie master and slave. Master is turned off and then turned on, recorded in tshark slave application there is icmpv6 multicast listener report message and ...
1
vote
1answer
60 views

How to use one path in heredocument

I wrote this here-document to source a few scripts under the path ~/own_scripts/ but I wrote it in a way that causes duplication of this path: source <<-EOF ~/own_scripts/1.sh ~/own_scripts/...
1
vote
0answers
219 views

Proxmox hyper-convergence and storage redundancy

What kind of storage redundancy (data blocks at least on two different physical machines) does Proxmox Hyper-Convergence provide? Nutanix does it with a controller VM (CVM), VxRail with VMware vSAN ...
1
vote
0answers
19 views

Several WebServers redundancy with same IP for the public access

We are using 2 (or even more) WebServers for backup, so if the main WebServer went down, the others will be replaced. For this purpose, I think I should use Virtual IP address (Red triangle), right? ...
4
votes
0answers
130 views

Split file F into M parts, recover file F from N of those M parts [closed]

I want to split a file into M parts, such that I can recover the file from N of those M parts. (Where M>N, and I get to choose both M and N). For example: I have FILE.IMG I split FILE.IMG into M=3 ...
4
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0answers
423 views

How to shard file into n-out-of-m redundancy (erasure code e.g. kind of reed solomon)?

How to shard file file into m files, so it can be recovered with any n of them ? It looks like Erasure Code, preferably "optimal erasure codes". (Example of another application and proposed ...
4
votes
1answer
2k views

Protecting data against bit rot

I have realized that I need to protect all of my photographs against bit rot (file corruption occurring at random due to errors in hard drives or network transfer). I recently discovered par2 which ...
2
votes
1answer
618 views

Using WiFi port as redundant link

I want to use WiFi port of my server as redundant link for copper connection to my home DSL router. My router if SAGEM 2704 with very limited functionality. So practically the only possibility is to ...
0
votes
0answers
124 views

Redundant and Load Balanced storage on FreeBSD?

Back from: Load balanced & Redundant Storage on FreeBSD How do I create a (Redundant and Load Balanced) Storage based on FreeBSD? Storage should be located on (2 or more servers) providing ...
2
votes
2answers
154 views

What is a good way of layering zfs filsystems to manage unpredictable future workload that doesn't severely compromise performance?

I've been playing around with ZFS and using sparse files as virtual devices to learn how to use the zfs tools. It seems that there isn't much of a hit in performance by creating a raid pool out of ...
2
votes
1answer
384 views

Configure SSH keys for production and DR server

Here is the case, we have successfully configured SSH keys (and hence password-less SFTP connection) between ProdServer-A to ProdServer-B. It works, or so I thought still yesterday. Yesterday ...