One of the features of ZFS's spares handling is that if you havemultiple pools, you can share spare disks between them. This lets youhave a single global pool of spares that are used by whichever poolneeds them, or more complex schemes if you really want them (you mightin, say, a SAN environment).

Our experience is that you want to be really cautious around multi-poolshared spares, because they're buggy and they don't necessarily workvery well in practice in

I recently read about a study of tabbed browsing ,and it inspired some reflective thoughts. I am well out on the 'manythings open at once' curve of browser users, but unlike almost everyonein the study, I do almost all of it in separate windows instead of intabs. I've touched on this before , butI feel like taking another shot at one specific aspect of it, which ishow one deals with inactive browser sessions.

(By 'browser session' here I mean one window