Hi @hussainyousaf,
Please be patient; we’re a small team juggling a lot of responsibilities!
I’ve responded to your question about the backup plugin here: What to backup? - #7 by asmecher
CLOCKSS and LOCKSS are working with OJS 3.1.1-4 as far as I’m aware. Those tools just need to be able to harvest OJS like any spidering software; no special support is required in OJS.
Regards,
Alec Smecher
Public Knowledge Project Team