mCmanu 0 Posted April 17, 2020 Posted April 17, 2020 (edited) Unless you have a way to ensure that any outside machine can only access one of them, you should only run a single DHCP server. Running two can give rise to subtle and variable network problems. Paul Hi Paul, If you can explain more on that either here or in private I would be more than happy to improve my knowledge. From what I've read, it's a good practice to seperate the load of DHCP accross multiple servers into different scopes for: a ) getting devices an "offer" quicker; b ) increasing service avaiaibility; and: c ) balancing the load. Source: https://serverfault.com/questions/368512/can-i-have-multiple-dhcp-servers-on-one-network Microsoft also released a Technet article about this practice in Windows Server environment. Have a good day! Edited April 17, 2020 by mCmanu
maegibbons 1287 Posted April 17, 2020 Posted April 17, 2020 Hi Paul, If you can explain more on that either here or in private I would be more than happy to improve my knowledge. From what I've read, it's a good practice to seperate the load of DHCP accross multiple servers into different scopes for: a ) getting devices an "offer" quicker; b ) increasing service avaiaibility; and: c ) balancing the load. Source: https://serverfault.com/questions/368512/can-i-have-multiple-dhcp-servers-on-one-network Microsoft also released a Technet article about this practice in Windows Server environment. Have a good day! How big is your local layer 2 network? I am with Paul on this, having secondary and redundant DHCP servers is an unnecesary complication and usually causes more problems than its worth even on large networks. The only time we tend to do it is over bridged WAN links where we block dhcp traffic over the link and use a different sub range (not subnet) on either side of the link. But this is a rare scenario as we normally route. Krs Mark A 'like' is always appreciated!
pwhodges 2012 Posted April 17, 2020 Posted April 17, 2020 It can be done, but the potential for problems outweighs any benefit in most situations. Both your instances are running on the same hardware, so the redundancy gives you no protection against hardware failure. In case of software failure, I suppose you have backup sufficient for you to restore a failed server quickly - and in any case you can have a duplicate DHCP server on the other machine, but only start it in case of failure of the main one. In business environments before my retirement I always ran with a single DHCP server (over more than 20 years), and never had cause to question this decision. Paul 1
mCmanu 0 Posted April 17, 2020 Posted April 17, 2020 That's good to know! Thank you both for explanations. Regards
gerry.emm 10 Posted May 19, 2025 Posted May 19, 2025 Hey guys, Also looking to keep my little setup running smoothly... Currently running EMBY Premiere on a Dell Optiplex 7070 SFF, 32 GB of RAM, with a 512 GB nVme Lexar NM620 Win 11 Pro OS drive, a generic 1TB internal storage/utility SSD hard drive and approx. 50 TB of storage as external USB hard drives. This is a PRIVATE system, meaning I have NO clients except for my own use. P.S. - considering bumping it up to 64GB RAM...would it be worth it??? I currently use a daily array of software (mostly IOBit software, ie: Advanced Sytemcare, IOBit Uninstaller, Driver Booster and Smart Defrag) to keep my system "clean". I also run the new Microsoft "PC Manager" software daily to make sure my OS is "tip-top". I've been looking around at other software companies that make similar software (ie: Auslogic) lately because I find out that some software doesn't always do what it "CLAIMS" to do... In any case, does anyone here have any specific software they use that provide GREAT results to keep THEIR system running its best? Thanks again in advance for any help you can provide, be it software, setup, or anything to make my EMBY (appropriately nicknamed "Beyond Infinity") run at its best!!! Gerry
Neminem 1518 Posted May 19, 2025 Posted May 19, 2025 12 minutes ago, gerry.emm said: considering bumping it up to 64GB RAM...would it be worth it??? If you don't see RAM usage peaking out, and giving you I/O wait problems, then your 32GB is enough. There is a saying "Unused RAM is waisted RAM"
marriedman 85 Posted May 19, 2025 Posted May 19, 2025 9 minutes ago, gerry.emm said: In any case, does anyone here have any specific software they use that provide GREAT results to keep THEIR system running its best? Linux! Mostly saying that in jest, but I do want to point out that I have run any "optimizer's" like boosters, defraggers, or whatever since 2007 much less anything daily. I still have my netbook from 2008 running a fairly modern linux distro, and those things were under-powered when they were new! In my experience With Windows as a desktop user, those optimizer's degrade performance more than improve. I would also assume that the NTFS has come far along enough to not require defragging. You don't mention what CPU you have, but if it is anything newer than an 8th gen Intel, you have nothing to worry about. Emby is efficient enough to run on a RaspberryPI.
Apotropaic 41 Posted May 19, 2025 Posted May 19, 2025 I wish I had 32gb of RAM, or even half that I would only add more memory if you use that same system for other stuff as well, as in your main desktop machine, converting your media and if you're caching video streams in memory etc. but I can't see that making much of a dent if it's just for your own use. However, unless all your storage drives are USB3 - you'd probably get more of a performance boost moving them to a NAS enclosure, better still would be to make your own, then you'll find emby will run just fine on that lower powered machine....
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