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Sun x4500 Thumper: Mapping logical drives to physical

November 16th, 2008

The Sun x4500 has 48 disk slots, numbered 0 to 47. However on Solaris, drives are named according to their controller/target location. I was wondering how you work out how to go from the logical naming, to the physical one.

Well the answer lays on the x4500 Tools & Drivers CD. On it is a nifty package named "SUNWhd-1.07.pkg", which plonks a utility called "hd" at "/opt/SUNWhd/hd/bin/hd". Running spits out the serial numbers of the disks, their temperature, and at the end, it finally spits out some ASCII art depicting the layout:

---------------------SunFireX4500------Rear----------------------------

36:   37:   38:   39:   40:   41:   42:   43:   44:   45:   46:   47:
c4t3  c4t7  c3t3  c3t7  c6t3  c6t7  c5t3  c5t7  c1t3  c1t7  c0t3  c0t7
^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++
24:   25:   26:   27:   28:   29:   30:   31:   32:   33:   34:   35:
c4t2  c4t6  c3t2  c3t6  c6t2  c6t6  c5t2  c5t6  c1t2  c1t6  c0t2  c0t6
^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++
12:   13:   14:   15:   16:   17:   18:   19:   20:   21:   22:   23:
c4t1  c4t5  c3t1  c3t5  c6t1  c6t5  c5t1  c5t5  c1t1  c1t5  c0t1  c0t5
^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++
 0:    1:    2:    3:    4:    5:    6:    7:    8:    9:   10:   11:
c4t0  c4t4  c3t0  c3t4  c6t0  c6t4  c5t0  c5t4  c1t0  c1t4  c0t0  c0t4
^b+   ^b+   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++   ^++
-------*-----------*-SunFireX4500--*---Front-----*-----------*----------

Rather funky, and useful!

Entry Filed under: Solaris,Sun Hardware,ZFS