ZFS - moving from a zraid1 to zraid2 pool with 1.5tb disks

Damien Fleuriot ml at my.gd
Sat Jan 1 15:11:50 UTC 2011


This is a home machine so I am afraid I won't have backups in place, if
only because I just won't have another machine with as much disk space.


The data is nothing critically important anyway, movies, music mostly.


My objective here is getting more used to ZFS and seeing how performance
gets.

I remember getting rather average performance on v14 but Jean-Yves
reported good performance boosts from upgrading to v15.

Will try this out when the disks arrive :)


Thanks for the pointers guys.

On 12/30/10 6:49 PM, Ronald Klop wrote:
> On Thu, 30 Dec 2010 12:40:00 +0100, Damien Fleuriot <ml at my.gd> wrote:
> 
>> Hello list,
>>
>>
>>
>> I currently have a ZFS zraid1 with 4x 1.5TB drives.
>> The system is a zfs-only FreeBSD 8.1 with zfs version 14.
>>
>> I am concerned that in the event a drive fails, I won't be able to
>> repair the disks in time before another actually fails.
>>
>>
>>
>>
>> I wish to reinstall the OS on a dedicated drive (possibly SSD, doesn't
>> matter, likely UFS) and dedicate the 1.5tb disks to storage only.
>>
>> I have ordered 5x new drives and would like to create a new zraid2
>> mirrored pool.
>>
>> Then I plan on moving data from pool1 to pool2, removing drives from
>> pool1 and adding them to pool2.
>>
>>
>>
>> My questions are as follows:
>>
>> With a total of 9x 1.5TB drives, should I be using zraid3 instead of
>> zraid2 ? I will not be able to add any more drives so unnecessary parity
>> drives = less storage room.
>>
>> What are the steps for properly removing my drives from the zraid1 pool
>> and inserting them in the zraid2 pool ?
>>
>>
>> Regards,
>>
>>
>> dfl
> 
> Make sure you have spare drives so you can swap in a new one quickly and
> have off-line backups in case disaster strikes. Extra backups are always
> nice. Disks are not the only parts which can break and damage your data.
> 
> Ronald.
> _______________________________________________
> freebsd-stable at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-stable
> To unsubscribe, send any mail to "freebsd-stable-unsubscribe at freebsd.org"


More information about the freebsd-stable mailing list