By Michael W Lucas
21st-Century information Storage
ZFS, the short, versatile, self-healing filesystem, revolutionized information garage. Leveraging ZFS adjustments every thing approximately handling FreeBSD systems.
With FreeBSD Mastery: ZFS, you’ll research to:
Whether you’re a long term FreeBSD administrator or a brand new person, FreeBSD Mastery: ZFS can help you simplify storage.
Master ZFS with FreeBSD Mastery: ZFS.
Read Online or Download FreeBSD Mastery: ZFS PDF
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Additional info for FreeBSD Mastery: ZFS
This usually involves either opening a case or pulling individual drives out of a disk array. This is tedious, unpleasant, and most often interrupts service. If you prepare during installation, you can zero right in on a failed disk舒even a disk at a remote facility. Jude runs a lot of very dense storage arrays in locations all over the world, and uses this scheme to keep hard drive maintenance from overwhelming him. Come up with a naming and numbering scheme for your storage arrays. Many storage arrays have a standard naming scheme, often printed on the equipment.
Sun sold high-end servers. ” ZFS’ built-in error correction compensates for most but not all memory-induced errors. The generic arguments in favor of ECC RAM are still valid, of course. A machine with non-ECC memory can suffer memory corruption, and it’s possible for some of those errors to get to disk. That would happen regardless of the filesystem you’re using, however, and ZFS checksums offer a hope of identifying the problem. If you’re running a high-availability service, you want ECC for all of the usual reasons.
Filesystem designers had these ideas 30 years ago, but the hardware of the time couldn’t perform this amount of error checking with reasonable performance. The creators of ZFS looked at current hardware as well as where hardware was going, and decided that ZFS would take full advantage of emerging hardware. The result is a filesystem that’s not only more reliable than traditional filesystems, but often faster. Today, it seems that traditional filesystems were written with a “good enough for now” philosophy.