Should I enable ZFS compression?
If you’re storing video, audio, and images only on your ZFS pool/file system, compression may not give you many benefits. But if you’re storing text files and other compressible files (i.e., Word Document, Executable Binaries/Programs), then enabling compression on your ZFS pool/file system is worth it.
How does LZ4 compression work?
The LZ4 algorithm represents the data as a series of sequences. Each sequence begins with a one-byte token that is broken into two 4-bit fields. The first field represents the number of literal bytes that are to be copied to the output.
What is Ashift in ZFS?
ZFS has a property which allows you to manually set the sector size, called ashift . Somewhat confusingly, ashift is actually the binary exponent which represents sector size—for example, setting ashift=9 means your sector size will be 2^9, or 512 bytes.
Should I use LZ4?
We recommend LZ4 compression for nearly any conceivable use-case; the performance penalty when it encounters incompressible data is very small, and the performance gain for typical data is significant.
What is ZFS scrubbing?
The scrub examines all data in the specified pools to verify that it checksums correctly. For replicated (mirror, raidz, or draid) devices, ZFS automatically repairs any damage discovered during the scrub.
Does Synology use ZFS?
Synology is on BTRFS, Qnap has ZFS…. but their software has the worst security record.
What’s the best compression algorithm?
As outlined, there are often drastic compromises between speed and size. The fastest algorithm, lz4, results in lower compression ratios; xz, which has the highest compression ratio, suffers from a slow compression speed.
What is xz compression?
xz is a new general-purpose, command line data compression utility, similar to gzip and bzip2. It can be used to compress or decompress a file according to the selected operation mode. It supports various formats to compress or decompress files.
What’s so good about ZFS?
Huge Storage potential When ZFS was created, it was designed to be the last word in file systems. At a time when most file systems where 64-bit, the ZFS creators decided to jump right to 128-bit to future proof it. This means that ZFS “offers 16 billion billion times the capacity of 32- or 64-bit systems”.
Does XFS support compression?
XFS was ported to the Linux kernel in 2001; as of June 2014, XFS is supported by most Linux distributions; Red Hat Enterprise Linux uses it as default filesystem….XFS.
| Structures | |
|---|---|
| Transparent compression | No |
| Transparent encryption | No (provided at the block device level) |
| Data deduplication | Experimental, Linux only |
| Other |