Storage and Power


As we mentioned earlier, the V40z’s six hot swappable Ultra320 storage bays utilize LSI’s 53C1020 SCSI controller to connect up to six LVD SCSI devices. The sixth expansion slot in the front of the server can be used for a floppy drive/DVD/CD drive combo, as illustrated in our configuration below.

During the original release of the V40z, the LSI 53C1020 did not support 292GB hard drives. In the most recent BIOS upgrades, the V40z fully supports these sizes, which gives the machine a storage capability of just over 1.7TB. All six of the SCSI devices have activity and fault LEDs routed to the front of the machine and via the SMBus to the Service Processor. Even in the event of a stale kernel, we can tell if a hard drive has gone faulty via one of the various remote connections to the SP. The hard drive states are also viewable via the front panel LCD console.


Power on our Sun V40z comes from two, redundant 760W power supplies – both hot swappable. A metal arm swings out from the back of each power supply, unlocking the unit for removal.

Click to enlarge.

The entire power supply housing comes apart from the main chassis of the case via a small locking device that connects the PSU bay to the hard drive. Another proprietary Sun interface carries power from the housing to the motherboard without any wires. With the enormous concerns for air flow inside the chassis, the removal of as much wiring as possible is an absolute must.

Click to enlarge.

Click to enlarge.

Under the power supply, we have room for a seventh horizontal 66MHz PCI expansion slot that connects via a vertical riser. Given the condition that we mentioned on the chipset page, this PCI slot should probably go unused.

As we also mentioned earlier, both of these power supplies are directly managed by the Service Processor. As a result, when plugging in the system, the Service Processor boots up automatically its own operating system to oversee the functionality of the rest of the computer. This intelligent design allows for us to view the exact details of power draw and operating temperature.

System Management: Another Linux Success Thermals, Acoustic


View All Comments

  • dougSF30 - Tuesday, February 22, 2005 - link

    Typo page 1: "In January, Sun sent us a V40z demonstration unit that was complete with four Opteron 250s and 8GB of PC2700."

    It should be "four Opteron 850's"

    Also, page 3: "The older 130nm "CG" stepping on Opteron 8xx only allows for PC2700 memory"

    This is not true, generally. I don't know about the v40z, but CG Opterons can use PC3200 no problem.

    See here, for example:

  • Ardan - Tuesday, February 22, 2005 - link

    I agree with #16. Fantastic work, Kristopher! I have a family member that works for a division of Lockheed-Martin and they are dealing with Sun more and more now and he enjoys your articles when I show them to him. He said a few weeks ago that he shows some of these articles to co-workers because of the thorough evaluations and it is helping them to decide whether or not to outfit their systems with Serial ATA drives (for Destroyers) and now with Opteron systems from Sun.

    Good work! ;)
  • tfranzese - Tuesday, February 22, 2005 - link

    Excellent work Kris. Reply
  • KristopherKubicki - Tuesday, February 22, 2005 - link

    Something is wrong with the DB graphs: i am fixing it now.

  • Googer - Tuesday, February 22, 2005 - link Reply
  • Googer - Tuesday, February 22, 2005 - link

    This server is aperantly made by N Reply
  • Googer - Tuesday, February 22, 2005 - link

    OOPS, this is suppost to go where the blank post is.

    To the author or whom it may concern: A bad link is located on page 3 and reads:

    two Samsung 1GB PC2700 – link to Samsung.jpg>
  • Googer - Tuesday, February 22, 2005 - link

  • Googer - Tuesday, February 22, 2005 - link

    I want Game Benchmarks too! (just for fun though) Reply
  • nourdmrolNMT1 - Tuesday, February 22, 2005 - link

    database benchmarks arent workin here either.


Log in

Don't have an account? Sign up now