iRODS Size

[Salman]

Hi,

We are planning to install a production server of iRODS and I was
wondering if someone has an estimation of the practical storage size
we need to locate for iRODS components (including iCAT) and PostgreSQL
installation.

Thanks,
Salman

[schr...@diceresearch.org]

Hello,

How much disk space is needed for the ICAT depends on how many of the
various types of iRODS-ICAT items are created, in particular, how many
data-objects and collections you have. Also, if you use a lot of
user-defined-metadata, that will take some more space too. There are
also tables for users, resources, and other things, but those usually
remain small.

I have a few Postgres ICAT databases still available that I used for
some testing a while ago. This won't be completely accurate but
should give you some idea of how the database grows (Postgres, in this
example).

My largest test ICAT has about 14.39M files and 253K collections, and
the Postgres data area for it takes about 12G (in a subdirectory of
~/pg/pgsql/data/base/). Another test ICAT has about 2M files, 250K
files, and uses, I believe, about 3.4G. Another is ~1.89M files, 199
(not K, just 199) collections and uses about 755M. And another is 506
files, 250K collections and uses 721 M. I may have these last two
turned around (721M and 755M) because I'm just estimating which ICAT
corresponds to which subdirectory under ~/pg/pgsql/data/base/; but it
should be under a Gig.

The other major use of disk space, of course, is the actual storage
for your data-objects. There is also a little space needed for the
irods and Postgres binaries and log files, perhaps a hundred MB or so.
I have log files of several hundred MB but that's because I have a
larger collection of some olds ones and had enabled additional
logging.

- Wayne -

--
"iRODS community is contagious - don't you know enthusiasm is
contagious".

iROD-Chat web page: http://groups.google.com/group/iROD-Chat

[Salman Al-Ansari]

Thanks Wayne for your informative response.

Regards,
Salman

--
Salman