@8F93.ADF IBM PS/2 ServerGuard

srvgrd10.exe IBM PS/2 ServerGuard Adapter Option v1.0

193-297 IBM PS/2 ServerGuard
194-184 IBM PS/2 ServerGuard  (Re-announcement)

MASS/2 Monitor (remote monitor 8600 RMP or PS/2 ServerGuard. Win3.x, OS2, NW)

ServerGuard Front
ServerGuard Back
Power Planes Vcc, Vbb, and Vbat
ServerGuard Functions
   PCMCIA Slot Use
ServerGuard under OS/2
Battery Pack
Power Control Box
   Power Control Cable Pinout
   Power Control Box LED Status Indicators
0275xx Series Errors
POST/Config Errors with SG Installed
False 027564 Errors
ADF Sections

ServerGuard Front P/N 61G3628, FCC ID ANO70G7365 [P] (photo by Alexander Paterakis)

The ServerGuard Adapter is a standard IBM Type-3 Micro Channel card size (3.475" x 11.500").
The PCB has 10 layers (3 voltage, 1 ground, 6 signal planes).

BH3 Backup Battery, CR2032
C Catches for battery pack
J1 Header for Remote Maintenance Port
J4 Power plug for 7.2v NiCad
J6 No idea
J7 No idea
J9 No idea
J10 No idea
J20 Power Control Cable Header
PCMCIA Slots Type II
Riser Header to PCMCIA slots
SP1 No idea
U1, U13 NS LM34
U2 CP Clare LQ54B00
U5 32.768 KHz osc
U6 Power Trends PT6101N
U7 NS LM2931 AT 5.0
U8 64F3777
U9 40.0000 MHz osc
U11 64F3776
U12 Sony CXK581001M-85LL
U100 Dallas DS1210S NVRAM controller

Note: Some field failures have been isolated to the connector for the Power Control Cable being inverted in its socket (J20) on the ServerGuard Adapter. This is a keyed rectangular connector, but it may be plugged inverted if forced. This situation may damage either the power control module, the Adapter, or both. 

J6, J7 and J9, J10
   Guessing big time here. Possibly both pairs are headers to connect to a system power switch and the System Board power connector on a 7546? 

3 Volt Battery
   The 3v CR2032 is used to maintain power to the NVRAM and the real time clock. Average battery life is estimated at 10 years. 

Temperature Sensors
   U1 and U13 provide input to the A-D converter for monitoring the internal temperature of the system. The two sensors are used to compute an average temperature within the system.

   The sensors increase the output 10mV per degree F. The ADC represents each 10mV increment as one bit value and measures a temperature range from -26F to 230F. (Ed. Boiling water is only 212F!) 

   I see now why IBM is not an industry leader now. To quote "The ServerGuard Adapter /A has two jumpers: a password-override jumper and a manufacturing jumper". 

Password Override Jumper   [SP1?]
   The Password-override jumper is used to reset the administrative password in case the password is forgotten or the NVRAM area becomes corrupted (if the battery fails).

   The administrative password protects functions such as changing passwords, changing power controls, setting error thresholds, and updating code in flash memory.

   When the jumper is on pins 2-3, it is in the normal operating position. To override the admin password, jumper pins 1-2. Restore the jumper to 2-3 to protect the new password. 

Ed. Now what the hell? Which jumper is what? 

PT6101N 1 A, 12-Pin SIP Integrated Switching Regulator, +5 V datasheet

Power Indicator LEDs
When all LEDs are off, the adapter is in the sleep mode. 

CR1 When blinking (about once every 5 sec) adapter is working normally.
CR2 State of Vcc power plane. When lit, the system power supply is On.
CR3 State of Vbb power plane. When lit, power input for the Vbb power plane is present.

ServerGuard Back "DELIVERY BOYS"

U30 TI 406AAL (82G3495)
U38, U39 TI ADC0808FN CMOS
U40 Sony CXK581001M-85LL
U42 Sony CXK5864BM-70LL
U44 Not sure. Solder pads.
U45 Dallas DS1284Q Watchdog timekeeper
U49 06H3190
U51 71G0267
U52 06H2691
U58 32.0000 KHz or MHz?
U60 80C186XL20

U45 Time of Day Clock The adapter uses a real-time clock with a back-up battery as an alternate voltage source. This clock is used to maintain an independent time-of-day source, and it uses the alarm to schedule system power events. Whenever the system power or battery pack (7.2v) is off, the clock uses the back-up battery (3.0v)

U44 Mystery Anyone with a component mounted on these solder pads? See POST Errors

IBM PS/2 ServerGuard Features

Flash Memory 512KB

Power Planes
  The ServerGuard has three separate power planes, Vcc, Vbb, and Vbat. 

Vcc Power Plane
   This plane is powered by +5v dc from system power supply and contains all system-interface logic on the adapter. If the system is powered on, the adapter is active.

   Each time the system +5v goes below 2.5v, an internal interrupt (AD_INT3) is generated to alert the adapter microprocessor that power has been removed. 

Vbb Power Plane
   This is powered from a voltage regulator that receives it's input from the system +12v dc supply when system is on. When system is powered down, the Vbb Power Plane is powered from the 7.2v dc battery pack.

   It provides power for most of the computational logic on adapter (microprocessor, memory, and ADC). When the battery is the power source, Vbb voltage can be turned off with the power-kill bit; this bit has no effect when the system +12v is present.

   When power to Vbb is removed, the adapter is in sleep mode. The adapter is awakened by:
       Incoming call to the modem
       Power-override switch pressed on EPCB
       Scheduled wake-up alarm from RTC 

Battery Voltage Plane (Vbat)
   Powered from a voltage regulator, which receives it's input from the system +12v supply when the system is on or from the 7.2v battery pack when the system is powered off. It contains the logic that controls the power-on state of the system power supply and the input for the Vbb power plane.

   Logic on the Vbat plane is always active and cannot be turned off, as long as the 7.2v battery pack has power.

   The functions on this power plane include the Shutdown, Power-Kill, Suicide, and Low-Power Enable registers, the LED and it's controls, the control logic for the Vbb power plane, and the voltage regulator for the Vbat power plane.

ServerGuard Functions

Is it a PCMCIA Adapter?
  No! Slot A (upper) reserved for modem The modem is dedicated to ServerGuard and is not accessible by computer software. Slot B (lower) reserved 

Modem Specs
   It is a 2400bps, FDX modem with auto-dialing, auto-answering, and sleep mode features. In sleep mode, the modem responds to the ring-indicator signal. When the modem is called, it generates an interrupt to the adapter microprocessor. 

Slot B Mystery
   The tech ref never says Slot B is reserved. It has the same programming information as Slot A. Maybe the ADF can be hacked? 

Supported Systems
The IBM PS/2 ServerGuard Adapter is supported in the following systems:7546-411/640/641, 8580, 8590, 8595, 9577, 9585, 9590 and 9595 

Operating System Requirements
     OS/2.0 with CSD or OS/2 2.1 or higher, NetFinity Manager for OS/2, NetFinity ServerGuard Services and IBM PS/2 ServerGuard Mass/2 Monitor. NetWare support for the ServerGuard will be available for Versions 3.11, 3.12 and 4.0. 

Run from any System on Network
    ServerGuard and NetFinity for OS/2's features are available from the server system, or from any PC on the network.  Using IBM PS/2 ServerGuard MASS/2 Monitor from a remote ASYNC system, the LAN administrator can check and set alarm parameters, display server temperature, server voltages, and power condition.  Additionally the LAN administrator can power on/off or recycle power on the server. 

   Warning parameters for the system can be set with the ServerGuard option. Once set, the system automatically sends warning alerts to users, dials out to remote pagers, or shuts down if operational limits such as temperature or voltages reach unacceptable limits.

       ServerGuard information is displayed graphically, and more detail is available at the click of the mouse. The ServerGuard option makes system operational statistics, such as CPU, memory, and disk capacity utilization, available in real time. NetFinity for OS/2 displays a record of the last 10 seconds to 10 days (user selectable) for each statistic. The statistics can be stored to disk for long-term storage and analyses.

    ServerGuard records all critical events in a non-volatile (NVRAM) log, easily accessed for review. Because the ServerGuard is battery-backed, the log can always be accessed even if the server is not operating. 

The ServerGuard allows reboot and power on/off control of the server system.
LAN Access to configuration information
     Server power control and system reset capabilities controlled automatically or by real-time commands
     Alerts triggered by thresholds that can be preset by the user
     The ability to direct alerts to pagers, LANs, remote or local systems
     A battery backup designed to allow communications with the ServerGuard card during server power outages or when the administrator has powered the server down
     Levels of security and password protection
     Comprehensive error logging
     Remote (LAN) console/remote ASYNC access capabilities
     Remote (LAN) file transfer to and from the server
     Remote (LAN) entry of operating system commands for execution
     Compliance with emerging LAN management standards and protocols 

ServerGuard Functions
 When the computer power goes down, the ServerGuard Adapter:
    Continues running
    Time-stamps and logs the error 
    Dials out through modem, LAN, or local server port to alert designated person of the failure 

Monitoring and Controlling Resources
           Internal computer  temperature
           Computer voltages (+5V dc, +12V dc, -12V dc )
           Condition of the battery
           Performance and errors for
             -  Input and output devices
             -  Operating system (for standalone computers )
             -  Network operating system ( for computers on a network )
            Computer power on and off 

Sleep Mode
   Must be such a thing. No idea right now. Looks to be a power saving state.

Running ServerGuard under OS/2
   For anybody who has one, here's what I did to get it working in OS2. Download and install Netfinity 5.06 for OS/2 from IBM's site. Once that's running, download OEP128A.EXE as well. Create the disk, then run the install program. Change the source from c:\netfinity to a: and choose the option to install for local administration and then reboot. When you run Netfinity, you'll see the ServerGuard option and from there you can look at the logfile and set up settings for it. It works without the power supply, but is limited of course. The power supply for the IBM ISA remote management adapter is the same thing and they can be found on ebay. External Power Control Box

Battery Pack P/N 61G3629
      A rechargeable 7.2v Ni-Cad battery pack is used to power the adapter logic when the system is powered off. The EPCB recharges the battery while the adapter is in sleep mode.

   When fully charged, it provides about 50 minutes of power to the adapter, or if the adapter is in sleep mode, it provides about 60 hours of power. When fully discharged, it takes about 24 hours to fully recharge.

   The adapter monitors the battery voltage, and when the voltage reaches a predetermined threshold, it takes the specified action (eg. go to sleep). 

Battery Pack Construction
  Six AA sized NiCad cells, No special size needed. 7.2v, 600mAH total. Individual cells are marked "Japan YA". To remove battery pack- squeeze both catches inward. Pull the pack up , pivoting on the hinges that are on the opposite side of the catches.

ServerGuard Battery Pack Layout
  From the artiste formerly known as Lorenzo Mollicone

(New battery needs 24 hours to charge)

6x Sony Cadnica N-600AAK [1.2v / 600mAh ]
   Standard Charge 14-16 hrs at 60mA
   Quick Charge 4-6 hrs at 180mA

Klixon 3-S
4MM70A-06 Datasheet

Battery Pack Plug: MX 20D [sounds Molex-ish]

Power Control Box P/N 71G6222 (used also with ASMA)

The External Power Control Box (EPCB) controls the AC input into the system power supply. A cable provides a control path from the ServerGuard to the EPCB. The system power cord is plugged into the EPCB, and the EPCB is plugged into an AC source. The ServerGuard then controls the system power by signaling the EPCB to turn power to the system on or off.

The EPCB has a power override switch. When the switch is closed (on), AC power is provided to the system regardless of the ServerGuard controls to the EPCB. When the switch is open, the power to the system is determined by signals from the ServerGuard.

The EPCB has two LEDs. The power-status LED reflects the state of LED1 on the ServerGuard, and the cable-attached LED shows if the control cable from the ServerGuard is connected correctly.

Update: The revised ServerGuard has LEDs 3, 1, 2. LED 2 flashes with Power Status LED on the EPCB.

EPCB Connector
   The cable from EPCB to adapter is a shielded cable that connects digital ground on adapter to digital ground on the EPCB board.

OVRIDE Pin 1 Override-status signal is an output to adapter that indicates state of the power-override switch. A high level indicates the switch is open, low indicates closed.

EXTPWR Pin 2 External-power signal is an output to adapter and is used to recharge 7.2v battery pack.

SHUTEN Pin 3 Shutdown-enable signal is an output to adapter and is grounded in EPCB.

DCON Pin 4 This is an input from adapter that is used with EPCB_CLK to control power-up and power-down state of the system. When SHUTEN is low, this signal is controlled by the shutdown bit.

LEDON Pin 5 This is an input from adapter that controls power-status LED on the EPCB. It is controlled through Adapter Control Register 1.

CARD_DETECT Pin 6 This is an output to adapter that indicates whether EPCB is connected correctly. It is pulled low by EPCB. The state of this signal is indicated in EPCB-status bit.

GOOD_CABLE Pin 7 This is an input from adapter that controls the cable-attached LED on the EPCB. It is lit when the signal is low.

EPCB_CLK Pin 8 This is an input from adapter that clocks the data on DCON. The data is transferred on the rising edge. It is controlled by the EPCB Control register. 

My Power Cord was Bobbitted!
  If someone sliced off your power cord, it uses an 8 pin mini-DIN plug to a 10 position header. Cable is P/N 61G2145.  It isn't a PS/2 plug, though it looks like it without a center polarizing rib. Looks like a Mac Local Talk plug...

Note: My 10 pin header numbering is off. I do know that the "N" is correct. N is pin 7.

Description 10-pin
4 DCON 4
Shield Ground 1

Open 7
Power Control Box LED Indicator Status

State Indicates Action
Power status LED
ON System on and functioning None
Blink SG is monitoring system None
OFF Power off too long / Battery failed. Charge battery. (POB, leave on 24hrs)
Replace battery pack.
Cable attached LED
ON Cable attached No action required
OFF Cable unplugged / bad, PCB unplugged. Attach / replace cable, Plug PCB in.
PCB - Power Control Box
POB - Power On Button

0275xx Errors

The ServerGuard's series of error messages is HERE.

POST or configuration errors with ServerGuard installed

The ServerGuard Adapter causes 66 errors (configuration) during POST or isn't recognized in Configuration. This exposure is limited to POST.

Once the ServerGuard adapter has successfully completed POST, it will function normally, without further exposure to the problem until the system is once again powered on (POST is run again).

Problem Isolation Aids Inspect the ServerGuard card for a component (chip) at location U44. If this module is missing, the adapter is NOT exposed to this problem. The location of U44 is printed on the card, but the lettering is very small. Refer to the following diagram for the location of U44:

Backside of the ServerGuard Adapter

Fix This problem is being corrected in current production. A new version of  the ServerGuard adapter is available under FRU P/N 06H8091. 

Ed. My SG doesn't match the FRU or P/N. The two chips to the right of U44 (above) look to be EPROM, while my SG has flash. I do have a U44 close to that location, but I will have to install the SG to confirm my hunch. 

View Configuration Symptoms
   The chip (U44) caused numerous problems, but the most obvious symptom is trashed configuration and setup.  Look at the MEMORY section of your VIEW CONFIGURATION, are there musical notes instead of a number?  This is a giveaway to a bad ServerGuard card. 

Error Code 027564 may be False
   If error code 027564 is displayed (12 Volts from power supply is bad) when running the ServerGuard adapter diagnostics, but no system failures reported and no other diagnostic failures are experienced, then it is a false error. No hardware or software needs to be replaced. 

166 POST Error With ServerGuard Adapter 
  During POST a 166 error is received indicating the installed ServerGuard Adapter is "busy."
ALL PS/2 Servers with the ServerGuard adapter, FRU P/N06H8091, installed may be affected.

   Do not replace the ServerGuard Adapter. This error may be caused by either inserting or removing the modem from the PCMCIA socket, or connecting/ disconnecting the battery-pack to the adapter while system power is on.

To Correct the Problem:
1. Power off system, remove ServerGuard adapter.
2. Make sure ServerGuard battery-pack is fully charged.
3. Disconnect battery-pack from ServerGuard for a few seconds.
4. Reconnect battery-pack, make sure the 3 LEDs (CR 3, 1, 2) follow this sequence:
   - CR3 comes on first.
   - Seconds later, CR2 blinks 5x in 5 sec interval, stays on for a few seconds and goes off.
   - Seconds later, CR3 goes off.
   - CR1 remains off the whole time.

AdapterID 08F93h   IBM PS/2 ServerGuard

I/O Address Range
  Unique I/O address range which is used to communicate with this adapter
    <8000-800F>, 8400-840F, 8800-880F, 8C00-8C0F, 9000-900F, 9400-940F, 9800-980F, 9C00-9C0F 

DMA Arbitration Level
   DMA channel used to transfer data.
          <Arb 9>, 8, 7, 6,  5,  4,  3,  2, 1,  0,  E, D,  C,  B,  A 

Interrupt Level
         Interrupt level for adapter. Ed. IRQ 14 will give 95 the sh*ts...
   <IRQ 5>, IRQ 14 

     On, adapter releases control of bus as soon as another adapter preempts or requests bus.  Off, adapter holds bus until entire transfer has been completed.
   <On>, Off 

Adapter Serial Port Emulation
      This is commented out. If you want to enable this option, remove the ";" at the front of each line. Serial port emulation makes this adapter look like a SERIAL 1 port to the system. This allows the modem port on this adapter to be used for remote diagnostics in addition to the normal modem functions that would be performed by this adapter. 
   When this function is enabled, SERIAL 1 should NOT be used as a general purpose serial port.  If remote diagnostics is not going to be used, this function should be <Disabled>.
     <SERIAL 1>  IO 03F8h-03FFh Int 4, Disabled 

      This item is not changeable. This adapter requires a Modem card inserted into PCMCIA Slot A in order to operate. Do not remove the Modem PCMCIA card in Slot A.
     Modem card 

         This item is not supported at this time. Currently, this adapter does not support the insertion of a PCMCIA card into slot B. If the support becomes available in the future, a flash update to the  adapter's firmware will be required and will be separately purchasable.

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