ZFS mix disks diffrent size and speed in a pool

[Ronald Klop]

After all the disks are replaced the extra space can be used.

See man zpool:

     autoexpand=on | off
         Controls automatic pool expansion when the underlying LUN is grown.
         If set to "on", the pool will be resized according to the size of the
         expanded device. If the device is part of a mirror or raidz then all
         devices within that mirror/raidz group must be expanded before the
         new space is made available to the pool. The default behavior is
         "off".  This property can also be referred to by its shortened column
         name, expand.

So it can be nice to start using bigger disks (2+ TB) if you know you need more space in the future and the price is ok.

Regards,
Ronald.

 
Van: Steven Hartland <killing at multiplay.co.uk>
Datum: woensdag, 3 oktober 2018 10:12
Aan: freebsd-fs at freebsd.org
Onderwerp: Re: ZFS mix disks diffrent size and speed in a pool
> 
> That will be fine, you wont benefit from the extra space or speed but it will just work.
> 
> On 03/10/2018 09:07, Jean-Marc LACROIX wrote:
> > Hello,
> >
> >     we actually have a storage solution based on a DELL 630 + 3 JBODs > DELL MD 1420 (HBA mode),
> >
> > The ZFS pool is made of 9 raidz2 vdevs + 1 mirror log + 2 spares
> >
> >     All disks are of the same type in capacity and speed.
> >
> > The problem is that DELL is unable to provide the SAME kind of disk > (capacity AND speed)
> >
> > when a disk has to be replaced. So the question is:
> >
> > Is it possible to replace a 1TB 7200rpm by a 1.2TB 10000rpm disk > without any consequences for the existing pool ?
> >
> > THanks in advance
> >
> > Best Regards
> >
> > JM
> >
> 
> _______________________________________________
> freebsd-fs at freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-fs
> To unsubscribe, send any mail to "freebsd-fs-unsubscribe at freebsd.org"
> 
> 
>