Summary: here is how we hope to stand up an initial OAM server at NPS.
Background:
- NPS has purchased dedicated new server hardware for an OAM restart.
specs: 22TB disk storage, 10 GB memory, 2 CPU at 2GHz
- NPS also has high-bandwidth public access to serve it from
- we hope to give make application-admin access to select members
of the OAM community, as needed, to help us configure and
administer the server
- mailing list discussions indicated that ZFS file system is essential
to reach goal performance levels
- OpenSolaris is the operating system that supports ZFS
- NPS must get all of our servers certified via security requirements
published by U.S. Defense Information Systems Agency (DISA)
- We have passed through the certification process for Linux CentOS
but not OpenSolaris. getting certified is a bit time-consuming.
Don McGregor reports:
====================
OpenSolaris is no longer being supported by Oracle, the successor to Sun. Since
much of the
work on OpenSolaris was being performed by paid Sun employees, this makes the
long and
medium term viability of OpenSolaris questionable.
ZFS is one of a class of high performance filesystems that is apparently needed
for Open
Aerial Map due to the large number of files involved; conventional filesystems
such
as ext3 fall down. There are two filesystems that can likely hold the full
release
of all files: ZFS and BTRFS.
ZFS's license is engineered to be Linux-hostile, but a port operation is
underway that
allows ZFS to be run as an aftermarket add-on. The open release is probably a
few
months away. BTRFS is still in pre-release is is likely to be more than a year
out.
====================
Development summary:
- OpenSolaris is not being supported by Oracle
- Another beta ZFS is being built for Linux by KnowledgeQuest (details above)
but it is not clear how long it will take before that is stable
- We would really like to get this box online and get started
- A path to full backup from this server to NPS mass storage archive
is being worked out and should be available in a few weeks
Recommendations:
- convert existing box to Linux CentOS with regular file system
- complete security checklist and get certified for public access
- put server online, install GeoServer etc. version 1.7 or 2.0?
- start working on OAM
- backup image files and switch to ZFS someday when it becomes
available on Linux
Comments/questions welcome.
all the best, Don
--
Don Brutzman Naval Postgraduate School, Code USW/Br [email protected]
Watkins 270 MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149
X3D, virtual worlds, underwater robots http://faculty.nps.edu/brutzman
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