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by burner420042 40 days ago
The 'target' moves slow so once you learn it, it all stays relevant forever.

... And it's very, very fun.

1 comments

Does it offer performance advantages over NFS root?
I kind of expect the performance is worse, but one neat thing is that iscsi is a block device, so you could run e.g. disk crypto, volume management or whatever on it. Not to mention any FS. And you don't need to deal with NFS or RPC.
They operate at different layers.

iscsi is a block device: you gain a 'disk drive' sitting on your network. A dedicated network for disk traffic and use it to host on-prem virtualization. It's called a SAN array.

Sure, but eventually you will reach a layer with files, usually. Then you can run benchmarks and compare numbers.
Dunno about performance vs NFS, but I've stuffed an unaware OS onto ZVOL-over-iSCSI using a NIC with option ROM.