Sun has published a usable capacity calculator available for the Sun 7000. It was originally written by Adam Leventhal and the latest update from Ryan Matthews is available here. The calculator connects to a 7000 series appliance (or simulator) to calculate the usable capacity. Unfortunately, not everyone has easy access to a system. This is an online version of the calculator so you do not need to have a system locally. It is nothing fancy.

Enter the parameters on the command line below and the script will pop up a new window with the output from the calculator. If the calculator throws an error, that is what you will get in the window.

Sun Storage 7000 Size Calculator Version 2009.Q2

usage:  <jbod count> [jbod layout] [add ...]

After the jbod count, additional configuration for each JBOD can be specified in the following form:

h    The JBOD is only half populated
t    The JBOD is a 7210 Controller or J4500 Expansion
<n>    The JBOD has <n> logzilla devices

For example, specifying “4 2 h1″ will have 4 JBODs total, the first with two logzilla devices, and the second only a half JBOD with one logzilla.

or, specifying “3 t2 t1 t” will have a 7210 and 2 J4500s, the first with two logzilla devices, the second with one logzilla, and the last without any.

The “add” keyword starts a new jbod count, and models the total available size as if the JBODs were added to the config. Multiple “add” keywords are accepted.

Displays available configurations with raw capacity in TB
(1000^4 = 1,000,000,000,000 bytes) and usable capacity in TiB
(1024^4 = 1,099,511,627,776 bytes).