mdadm vs zfs vs btrfs

1. Is ZFS better than Btrfs?
2. Is ZFS the best file system?
3. Is ZFS faster than XFS?
4. What is the best file system for NAS?
5. Is ZFS faster than ext4?
6. Is Btrfs dead?
7. How reliable is ZFS?
8. How much RAM does ZFS need?
9. How good is ZFS?
10. Is XFS still used?
11. How reliable is XFS?
12. Does XFS support compression?

Is ZFS better than Btrfs?

The reality is that, today, ZFS is way better than btrfs in a number of areas, in very concrete ways that make using ZFS a joy and make using btrfs a pain, and make ZFS the only choice for many workloads.

Is ZFS the best file system?

ZFS is the best file system for data you care about, hands down. For ZFS snapshots, you should check out the auto snapshot script. By default you can take a snapshot every 15 minutes and up to monthly snapshots.

Is ZFS faster than XFS?

Resource utilization and performance

If you are using ZFS with all the default values set, then it will use more resources than XFS and perform slightly worse in terms of I/O but, with modern hardware and faster CPUs, this difference is negligible.

What is the best file system for NAS?

While XFS has proven to be a pretty good, fast filesystem (so far no problems) and development effort is going, still would recommend the slower ext4 (if a proper undelete utility is availabe) otherwise ext3 (unless you want your NAS to be a webserver (not recommended!

Is ZFS faster than ext4?

That said, ZFS is doing more, so depending on the workload ext4 will be faster, especially if you have not tuned ZFS. These differences on a desktop will probably not be visible to you, especially if you already have a fast disk.

Is Btrfs dead?

In terms of developer involvement Btrfs is not dead, far from it. It gets new patches, which are not maintenance only, in every new kernel release.

How reliable is ZFS?

ZFS is a highly reliable filesystem which uses checksumming to verify data and metadata integrity with on-the-fly repairs. It uses fletcher4 as the default algorithm for non-deduped data and sha256 for deduped data.

How much RAM does ZFS need?

With ZFS, it's 1 GB per TB of actual disk (since you lose some to parity). See this post about how ZFS works for details. For example, if you have 16 TB in physical disks, you need 16 GB of RAM. Depending on usage requirements, you need 8 GB minimum for ZFS.

How good is ZFS?

ZFS is an awesome file system that offers you way better data integrity protection than other file system + RAID solution combination. But implementing ZFS has a certain 'cost'. You must decide if ZFS is worth it for you.

Is XFS still used?

It can now handle volumes up to 32 Tbytes and file sizes up to 2 Tbytes. It is still used on many flash-based storage systems along with the FAT file system. It lacks the journal system found in ext3 and ext4.

How reliable is XFS?

XFS is very reliable. In fact, it might be more reliable than ext4, although that is debatable. XFS is also the primary file system supported by Redhat.

Does XFS support compression?

There are 3 filesystems that can do transparent compression: NTFS, ZFS, btrfs. ... XFS could really benefit from compression support.