> -----Original Message-----
> From: Richard Elling [mailto:richard.ell...@gmail.com]
> Sent: 星期三, 六月 15, 2011 14:25
> To: Fred Liu
> Cc: Jim Klimov; zfs-discuss@opensolaris.org
> Subject: Re: [zfs-discuss] zfs global hot spares?
> 
> On Jun 14, 2011, at 10:31 PM, Fred Liu wrote:
> >
> >> -----Original Message-----
> >> From: Richard Elling [mailto:richard.ell...@gmail.com]
> >> Sent: 星期三, 六月 15, 2011 11:59
> >> To: Fred Liu
> >> Cc: Jim Klimov; zfs-discuss@opensolaris.org
> >> Subject: Re: [zfs-discuss] zfs global hot spares?
> >>
> >> On Jun 14, 2011, at 2:36 PM, Fred Liu wrote:
> >>
> >>> What is the difference between warm spares and hot spares?
> >>
> >> Warm spares are connected and powered. Hot spares are connected,
> >> powered, and automatically brought online to replace a "failed" disk.
> >> The reason I'm leaning towards warm spares is because I see more
> >> replacements than "failed" disks... a bad thing.
> >> -- richard
> >>
> >
> > You mean so-called "failed" disks replaced by hot spares are not
> really
> > physically damaged? Do I misunderstand?
> 
> That is not how I would phrase it, let's try: assuming the disk is
> failed because
> you can't access it or it returns bad data is a bad assumption.
>  -- richard
> 

Gotcha! But if there is a real failed disk, we have to do manual warm spare 
disk replacement.
If the pool's "failmode" is set to "wait", we experienced a NFS service 
time-out. It will interrupt
NFS service.

Thanks.


Fred

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