Continuing my adventures with micro servers I started using the ODROID-U3 from HardKernel.
I purchased these units from CorpShadow.
This board is about the size of a credit card, but one inch thick.
It uses a Samsung Exynos quad core processor with 2GB RAM.
The preloaded eMMC cards ship with Ubuntu LTS.
The power supply is 5V@2A (roughly 10 watts max).

At the office I have a couple 1U servers running VMware ESXi that host DNS and inbound email gateways. These ODROID-U3’s would be perfect replacements. I can drop in four of each and still have lower power consumption and heat generation while also expanding the redundancy.

I am preparing a repository for the compiled packages I have made for updated software since the bundled packages are outdated.
I have packages for:

  • Firebird 2.1.7
  • Postfix 2.11.5
  • ldb 1.1.20 (ldb-tools, libldb1, python-ldb)
  • ntdb 1.0-7 (libntdb1, ntdb-tools, python-ntdb)
  • talloc 2.1.2 (libtalloc2, python-talloc)
  • tdb 1.3.5 (libtdb1, python-tdb, tdb-tools)
  • tevent 0.9.24 (libtevent0)

I am working on packages for:

  • Samba 4.1.17, 4.1.18, 4.2.1

Other packages I am considering:

  • OpenLDAP: 2.4.31 available, 2.4.40 latest

I am targeting the following services for using an ODROID-U3 micro server:

  • Public DNS
  • Private DNS/DHCP
  • Inbound email gateway
  • LDAP “slaves”
  • Private NTP
  • Private Blacklist (for email and firewall)

One thing I really like about these machines: less than 30 seconds from power on to full availability.
This sure makes a reboot during business hours a lot less of a hassle.

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