items tagged with zfs

My ZFS NAS is dead and status
Written By: Administrator
Section: PC and Hardware
Category: Storage
2006-09-10 13:09:03

I've made many errors when building my NAS server, and
this force me to forget using SUN Zeta File System, at least
for this year...In fact I have decide to build a NAS before
even knowing the existence of ZFS, and bought following
hardware components:

1 Promise Supertrak EX8350 with 8 SATA2 3GB port (RAID6)
The cheapest integrated mainboard available: NFORCE4 IGP
AMD64 3000+

NAS @ HOME part 7 Opensolaris ZFS raidZ install and benchmark
Written By: Administrator
Section: PC and Hardware
Category: Storage
2006-05-23 23:22:29
Putting OpenSolaris in a NAS server

OpenSolaris is an open source project created by Sun Microsystems to build a developer community around the Solaris Operating System technology
OpenSolaris express is the official distribution and can be download HERE but I will use a fork of that code.
Read More About NAS @ HOME Part 7 Opensolaris ZFS RaidZ Install And Benchmark...

soon ZFS under Linux
Written By: Administrator
Section: PC and Hardware
Category: Storage
2006-06-18 20:36:11
I am still testing my NAS system (seven 300Gb disks) and while testing OpenSolaris (under Belenix), and Googling I found that page:

This blog is about the Google Summer of Code project "ZFS filesystem for FUSE/Linux"

For all of You that do not know what FUSE is, FUSE is the Filesystem in Userspace Linux kernel module. This module allows nonprivileged users to create their own filesystems without writing any kernel code.

While ZFS has many features which can benefit all kinds of users - from the simple end-user to the biggest enterprise systems:

Provable integrity - it checksums all data (and meta-data), which makes it possible to detect hardware errors (hard disk corruption, flaky IDE cables..).
Atomic updates - means that the on-disk state is consistent at all times, there's no need to perform a lengthy filesystem check after forced reboots/power failures.
Instantaneous snapshots and clones - it makes it possible to have hourly, daily and weekly backups efficiently, as well as experiment with new system configurations without any risks.
Built-in compression, encryption
Highly scalable
Pooled storage model - creating filesystems is as easy as creating a new directory. You can efficiently have thousands of filesystems, each with it's own quotas and reservations, and different properties (compression algorithm, checksum algorithm, etc..).
Built-in stripes (RAID-0), mirrors (RAID-1) and RAID-Z (it's like software RAID-5, but more efficient due to ZFS's copy-on-write transactional model).
Variable sector sizes, adaptive endianness etc...

In fact this is a sponsored Google summer of code project. Note that Apple is also currently porting ZFS under OS-X. That could mean that ZFS could be mainstream in a future not far away than 2 years.

Google SoC Application Proposal (PDF)
Deadline: August 21st, 2006

And I expect to test RAID-Z...For those interested by RAID-Z raw performances, You can read this highly technical blog entry: WHEN TO (AND NOT TO) USE RAID-Z

Sun expect to have a stable ZFS version by June 2006.

Still playing with ZFS pool under Nexenta
Written By: Administrator
Section: PC and Hardware
Category: Storage
2006-08-11 22:50:05
Before putting my monster NAS online (pictures will follow soon), I am playing a lot with NEXENTA under VMWARE player.

I've found that excellent PDF (THE LAST WORD IN FILE SYSTEMS) which explain why ZFS may be the Saint Graal of file system, while if you want to learn how to administrate pool, I recommend YouThe ZFS admin guide

Here is my first try, with 7 simulated disks (this example use files and not real devices even if I have 7 real disks sitting next to me ;-)), next steps will be to export the pool as NFS share, plug some disks out, activate encryption, crontab snapshots and remote ssh backup of some vital data.

Read More About Still Playing With ZFS Pool Under Nexenta...

ZFS: too good to be true
Written By: Administrator
Section: PC and Hardware
Category: Storage
2006-06-25 22:20:38
ZFS has so much promise that it sound to good to be true! I will make an extensive try of it soon.

From ZFS: Threat or Menace? Pt. I

.... In a storage industry where the hardware cost to protect data keeps rising, ZFS represents a software solution to the problem of wobbly disks and data corruption. Thus it is a threat to hardened disk array model of very expensive engineering on the outside to protect the soft underbelly of ever-cheaper disks on the inside...
and part 2 is also here

And I also found some benchmarks against EXT3, ResierFS, UFS

will publish soon a lot of ZFS howton as well.

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