Pros & cons? I'm considering enabling it on our new qnap @ work. I'm running it on a distro at home. Don't think it's ever flagged a problem, or had noticeable effect on performance. Only time I'm even aware of it is during email scans, or during system updates.
On the qnap forum a couple of people have flagged scan slowness (though I'd schedule it for night), high cpu usage and conflicts with other scheduled tasks, rebuilds etc.
So I'm inclined not to enable it. Does the (minimal AFAICT) security benefit make it worth the (potential) other issues?
edit: windows boxen will be connecting to it, so...
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"Ninety percent of Americans use the Internet. The other ten percent use the banjo."
My biggest fear is that it might cripple a rebuild. The thing is going to be used in production, not backup. It dropped an apparently fine disk early last week, 'found' it again on a reboot and took ~7-hours to rebuild (during which it was still accessible in 'degraded' mode).
I've since enabled volume bitmap, which is supposed to make rebuild in such a scenario much faster.
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"Ninety percent of Americans use the Internet. The other ten percent use the banjo."
I mean, it might protect you from as much as 50-60% of viruses, but simply not downloading from dodgy sites and not opening unsolicited attachments has a higher protection rate than that.
bastard by name