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Posts Tagged ‘raidz’

Part III: Zeus rebuilt and configured!

November 21st, 2009 1 comment

I’ve spent the last month working with the newly built zeus server which is now powered by OpenSolaris (2009.06).

Here’s my final hardware specifications:

  • CPU: AMD Athlon X2 5050e – 2.6Ghz (45W TDP, AMD-V)
  • Motherboard: Gigabyte GA-MA790X-UD4P ( AMD 790X Chipset )
  • RAM: 2x Corsair TWIN2X4096-6400C5 (4Gb kit x 2 = 8Gb)
  • Graphics: ASUS 9400GT PCI-Express
  • Hard Disks:
    • rpool – 2x WD740ADFD – 74Gb 10K RPM, 16Mb Cache (mirror’d)
    • tank – 6x WD1002FBYS – 1TB, 7200RPM, 32Mb Cache (raidz)
    • base – 2x WD7500AAKS – 750Gb, 7200RPM, 16Mb (mirror’d)
  • Addon cards:
    • SATA – Silicon Image, Inc. SiI 3132 Serial ATA Raid II Controller
    • NICs – 2x Intel Corporation 82545GM Gigabit Ethernet Controller (e1000g)

I’ve finally managed to get the GA-MA790X-UD4P on the OpenSolaris HCL list – woo! Unfortunately the onboard NIC will not work in the 2009.06 release even though it is detected:

Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller

Maybe in a future release. Make sure you update the BIOS as OpenSolaris may have an issue with the USB controller being ‘mis-configured’ otherwise.

Just for kicks I went to Jaycar and bought myself a power usage meter to measure the watts used by the new boxen (see a review of the Mains Power Meter on DansData).

Old Zeus

  • Idle: 380W
  • Load: 413W

New Zeus

  • Idle: 232W
  • Load: 270W

Nice, with an Intel Atom based server it could go _a lot_ lower, but I’m happy with this.

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ZFS gets deduplication

November 3rd, 2009 No comments

ZFS now has deduplication support which is as easy as just setting a property on the file system.

$ zfs set dedup=on tank/src

Read Jeff Bonwick’s (the supremo source for ZFS) article as it covers everything you’d ever want to know about what deduplication is and the various strategies behind it. Can’t wait for it to be implemented in OpenSolaris 2010.02 its already been integrated into the ON source base.

Whilst on the subject of ZFS, there was a very good article posted on OSNews recently regarding the lack of fsck for ZFS, it gives you a very good overview of ZFS, what COW really implies, how it differs from journaling filesystems found in Linux and ofcourse regarding fsck.

And to compliment it all, a deeper look at the RAID-Z on disk format in ZFS. Light reading for Melbourne Cup Day!

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