Side access panel solenoid lock (HP Z420 Workstation only)
The side access panel solenoid locks the side access panel to the chassis. The solenoid is controlled by a local or remote signal.
To lock the solenoid, set a password for the solenoid lock in the Computer Setup (F10) Utility. To unlock the solenoid, remove the solenoid lock password in the Computer Setup (F10) Utility.
The solenoid lock FailSafe Key (available from HP) is is a device for manually disabling the solenoid lock. You will need the FailSafe Key in case of forgotten password, power loss, or computer malfunction.
Cable lock (optional)
To prevent theft, you can attach a keyed cable lock to the rear chassis panel. This cable lock attaches to the chassis and secures it to the work area.
Fault notification and recovery
Fault notification and recovery features combine innovative hardware and software technology to prevent the loss of critical data and minimize unplanned downtime.
If the computer is connected to a network that is managed by HP CMS, the computer sends a fault notice to the network management application. With HP CMS, you can also remotely schedule diagnostics to run on managed PCs and create a summary report of failed tests.
Drive Protection System
The Drive Protection System (DPS) is a diagnostic tool built into hard disk drives and is installed in select HP computers. The DPS helps diagnose problems that might result in unwarranted hard disk drive replacement.
When HP computers are built, each installed hard disk drive is tested using the DPS, and a permanent record of key information is written onto each drive. Every time the DPS is run, test results are written to the hard disk drive. The service provider can use this information to help diagnose conditions that required you to run the DPS software.
ECC fault prediction
When the computer encounters an excessive number of error checking and correcting (ECC) memory errors, it displays a local alert message. This message contains information about the errant DIMM, enabling you to take action before you experience noncorrectable memory errors. ECC DIMMs are standard on this computer.
Thermal sensors
Several thermal sensors in the HP workstation regulate computer fans to maintain an acceptable, efficient chassis temperature.
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