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Can ZFS use different sized drives?
1: there is no problem changing anything. The pool should be importable regardless of the CPU, mainboard or anything similar. 2: ZFS works best with devices of the same size. Moreover, as you want redundancy, devices larger than the smallest one would have their extra size wasted.
Can you use RAID with different drive sizes?
You can always mix drive sizes in RAID. And in plain RAID you always get the smallest common size from all drives. So in your case, each drive use 4TB. If you added one 1TB drive, all the drives would act as 1TB drives.
Do VDEVs have to be the same size?
All disks in a pool should be of the same size (outside log and cache devices) and all striped vdevs should have the same organization. Yes and Yes. You can add multiple VDEVs to a pool, they need not be similar. You can add multiple pools to a system, each consisting of whatever VDEVs.
Can you use different size hard drives in Freenas?
Mixing disks of different sizes in a VDEV is not allowed.
Do RAID 5 disks need to be the same size?
Do all drives have to be the same model and capacity for a RAID 5 array? The short answer is No, the drives don’t have to be exactly the same. The longer explanation is that for compatibility reasons, we usually recommend using the same model.
Do all NAS drives have to be the same size?
They will all be the same size as the smallest drive so half of those 8TB drive will not be used in a system with a single 4TB. If you used SPAN, it doesn’t matter as all the drive sizes will be tallied together. But depending on which NAS you have and which RAID set up you went with depends what will happen.
Is Unraid a hypervisor?
Unraid runs as a virtualization host, leveraging a hypervisor to partition resources to virtualized guests in a secure and isolated manner. VMs can be assigned a wider array of resources than Docker containers but still offer isolated access.
Can a RaidZ be bigger than a ZFS pool?
1: there is no problem changing anything. The pool should be importable regardless of the CPU, mainboard or anything similar. 2: ZFS works best with devices of the same size. Moreover, as you want redundancy, devices larger than the smallest one would have their extra size wasted. Finally, you cannot add a device (eg: the 4 TB disk) to a RAIDZ.
Can a 2TB disk be used as a ZFS partition?
“The devices can be individual slices on a preformatted disk, or they can be entire disks that ZFS formats as a single large slice.” So yes, you could create two 1-TB partitions on those 2TB drives, use them for RAID-Z vdev and the remaining space for non-redundant storage.
How to create RAID using different disk sizes?
If you want to create a raid with zfs using different disk sizes you need to use “zpool create (name of your pool) raidz1 -f sdb sdc sdd” the -f arqument force zfs to use different sizes example 500gb 1tb 250gb hd
What kind of RAID card do I need for ZFS?
Just make sure your HBA (Host Bus Adapter) isn’t doing something like encrypting your data at the hardware level. ZFS works best with a HBA like an LSI 9211-8i or an IBM m1015 cross-flashed to use the 9211-8i firmware, not a full blow “hardware” RAID card.