ZFS: Memory needed for managing L2ARC

[Dmitry Morozovsky]

Dear colleagues,

are there any "real" estimations on how much memory is needed for having 
efficient, say, 1T of L2ARC?  stable/amd64, of course.

I have backup storage server, where pool size is targeted to a few hundreds of 
terabytes (currently ~35T), and hot set is usually less than 512G-1T.

quick googling leads to some Solaris/Illumos documents, but even them are not 
bright enough in answer that.

Thanks!

-- 
Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:                                 marck at FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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