Netboot Slowness

New Contributor

I have a dedicated macmini that is responsible for our netboot functions, booting to a image I created using AutoCasperNBI (I am using the modified rc.netboot).

I noticed when I began booting 12 machines to this server, it was relatively quick, machines 13 and higher are taking much much longer.

Is this a limitation of the server or the software? Would getting a MacPro greatly improve the functionality?

Thanks all!


Contributor III

I've been wondering about this, but with the changes in (elimination of) imaging with High Sierra it probably won't matter to us for much longer.

Valued Contributor II

@Caist What sort of difference are you seeing? There's quite a bit to NetBoot when evaluating such things. The issue is that this is probably a result of limited bandwidth. This could be in the form of your switching network, caching on the MacMini, I/O limitations on the MacMini (either from low-performance HDD, insufficient RAM or a single Gig ethernet port. ) etc...

What are the specifics of your setup? (Age and config of the MacMini, Network setup, etc? I can happily NetBoot dozens of various Mac's simultaneously (I keep a software limit on my NetBoot servers at 50) and regularly boot 40-46 units. Then again, I have a LOT of hardware supporting that.

Valued Contributor II

@musat While I know this is the commonly accepted talking point, there's nothing definitive on this yet from Apple. An MDM/DEP only deployment solution, as Apple keeps hinting at won't work for those of us with the need a method for re-deploying computers in mass and at speed. Perhaps it will not be labeled "imaging" but there will be something.