12-29-2020 11:30 AM
Hi
I'm trying to understand the key factors when determining the number of media servers a Master server can cope with. This will be a new environment running NBU 8.3 and the master server is likely to be a new 5250 appliance.
Essentially there will be upwards of 100 remote sites with a small number of windows clients at each location - data size will be <500GB of file and SQL databases per site and I want to have a local media server on each site with a central master server.
This sounds a lot of medis servers - maybe too many - but I want to rule out the feasibility of having a media server per site before I look at alternative options - but to rule this out I need to better understand the potential issues here.
Licensing isn't a concern, ISLs are all good, stable and >1GB/s, I'd calculate that each site will consist of about 10 backup policies and perhaps 30-40 backup jobs will run daily for each site.Backup strategy will be full at weekends and Incrementals during the week - but these can be staggered if necessary. I don't yet know the total number of files that will be protected each day - but I can get this info to calculate the size of the catalog etc.
I feel that the master server will be single point of failure for the entire environment and therefore accept this an a potential issue for this solution in the event of hardware failure of extended downtime for maintenance etc.
What else should I consider, or is this solution completely viable and nothing to be concerned over :0)
kind regards and hope everyone has a good Christmas
Solved! Go to Solution.
12-29-2020 07:21 PM
Hi
Hope you having a nice chrismas holidays.
For your requirement i recommend you review NetBackup Planning and Performance Tuning guide. Here is attached a small snip of table showing how many media servers a Master should have.
However, there are many aspects well explained with real time calculations in this guide.
https://www.veritas.com/bin/support/docRepoServlet?bookId=99904379-99904385-1&requestType=pdf
Irrespective of NetBackup version this guide is still valid.
12-29-2020 07:21 PM
Hi
Hope you having a nice chrismas holidays.
For your requirement i recommend you review NetBackup Planning and Performance Tuning guide. Here is attached a small snip of table showing how many media servers a Master should have.
However, there are many aspects well explained with real time calculations in this guide.
https://www.veritas.com/bin/support/docRepoServlet?bookId=99904379-99904385-1&requestType=pdf
Irrespective of NetBackup version this guide is still valid.
01-04-2021 01:39 AM
Hi
Many thanks for the information - that guide will give me everything I need :0)
I did note though, that 8.3 has a different set of recommendations - in as much exceeding 50 media servers isn't recommended and that the master server would need close to 256GB of RAM. So I think that I need to split this requirement into multiple master server domains.
thanks again
01-04-2021 01:38 PM
Hi @CadenL
I think you might be referring to the new NetBackup Perfomance Tuning Guide for 8.3/8.3.0.1/9.0.
And yes the RAM requirement for the master does seem high. This has been raised internally to check as some in the SE community also thinks it is high. I'll provide an update when I know more.
David
01-05-2021 09:37 AM
01-08-2021 12:04 PM
Hi
Many thanks for your thoughts and it's good to get feedback from someone who has experience in large numbers of media servers. I take on-board all your thoughts and comments and will absolutely reconsider the solution following your feedback.
thanks again
01-08-2021 12:12 PM - edited 01-11-2021 05:48 AM
Hi @davidmoline
Thanks for your input on this and, yes indeed, I'm referencing the new 8.3 Performance Guide. I would very much like to know any new information you have on the following areas associated with the huge increase in RAM requirements for a master server to manage 20 and even 100 media servers as published in the guide.
Number of processors
Recommended memory requirement
Maximum number of media servers per master server *
8
128 GB
20
16
256 GB
100
*It is recommended to limit the number of media servers to less than 50 media servers per domain.
many thanks