Hello,
First, is 4 x 4TB in raidz1 is risky or should i use raidz2 or use 2 vdev of 2 x 4TB (mirror) ?
All new 4TB will be in a new pool.
I already have 2 vdev of 4 x 3TB in a pool. Some drive will die soon, so i want to transfer the important data in the meantime and restore all data from backup later.
Second, if an URE happen, do i lost only the file related to the sector, or i lost all the drive ?
Thanks
iharobike
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it will taken offline by the end of march 2021!
I like to aks Users and Admins to rewrite/take over important post from here into the new fresh main forum!
Its not possible for us to export from here and import it to the main forum!
Vdev configuration and URE (Unrecoverable Read Error)
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iharobike
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b0ssman
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Re: Vdev configuration and URE (Unrecoverable Read Error)
on raidz1 (raid5)
http://www.zdnet.com/article/why-raid-5 ... g-in-2009/
raidz2 is better than 2 mirrors
in case of ure in zfs you loose only the files affected if the ure is not in something important like the file table.
do you have ecc memory?
http://www.zdnet.com/article/why-raid-5 ... g-in-2009/
raidz2 is better than 2 mirrors
in case of ure in zfs you loose only the files affected if the ure is not in something important like the file table.
do you have ecc memory?
Nas4Free 11.1.0.4.4517. Supermicro X10SLL-F, 16gb ECC, i3 4130, IBM M1015 with IT firmware. 4x 3tb WD Red, 4x 2TB Samsung F4, both GEOM AES 256 encrypted.