Need Help with ZFS Pool! Expanding Mirror VDEV with a Single Drive Hey everyone, I'm currently facing a bit of a conundrum with my ZFS pool setup, and I'm hoping that some of you knowledgeable folks out there can lend a hand I have a ZFS pool with a mirror VDEV configuration (2 x 4TB), and I'm looking to expand it by adding a single drive (1 x 6TB) Here are
Some differences between RAIDZ and mirrors, and why we use . . . - TrueNAS ZFS is a complicated, powerful system Unfortunately, it isn't actually magic, and there's a lot of opportunity for disappointment if you don't understand what's going on RAIDZ (including Z2, Z3) is good for storing large sequential files ZFS will allocate long, contiguous stretches of disk
System Configuration | TrueNAS Documentation Hub Mirroring the Boot Pool: Provides information on how to mirror the boot pool on TrueNAS CORE Managing Enclosures: Provides information about hardware and expansion shelves on TrueNAS CORE Configuring the System Email: Provides information on how to set up system email on TrueNAS CORE
Recovering Data from Corrupted (?) ZFS Mirror Pool - TrueNAS Got that configured with 2x18TB drives in a Mirror pool, all configured and running through TrueNAS Scale These were Seagate EXOS drives After some configuration and testing, I felt that I was ready to move my data from the Ubuntu VM ZFS Pool over to the TrueNAS ZFS Pool
SOLVED - Change stripe vdev layout to mirror - TrueNAS After confirming going from stripe to mirror was possible I went ahead and built my system with two storage pools An "main" pool with 2 x 8TB drives for bulk storage and a "fast" pool with SSD's At the time of building the "fast" pool I only had access to a single 750GB SSD Knowing that I could extend the pool later, I configured it as a stripe
Mirroring the Boot Pool | TrueNAS Documentation Hub Adding a second storage device to the boot pool changes the configuration to a Mirror This allows one of the devices to fail and the system still boots If one of the two devices were to fail, that device is easily detached and replaced When adding a second device to create a mirrored boot pool, consider these caveats: Capacity: The new device must have at least the same capacity as the