SUMMARY: Fast Data Access Protection

From: Michael Pavlov (misha@etsd.ml.com)
Date: Fri Jul 17 1998 - 11:48:40 CDT


After I discovered that machine will boot not only from internal disk,
but also with only 1 CPU.
I decided to change the motherboard one more time.

That did the trick.

Original Problem:

ok boot -sv
Rebooting with command: boot -sv
Boot device: /sbus@1f,0/QLGC,isp@2,10000/sd@0,0 File and args: -sv
Size: 259384+60532+93528 Bytes
cpu0: SUNW,UltraSPARC (upaid 0 impl 0x10 ver 0x40 clock 168 MHz)
cpu1: SUNW,UltraSPARC (upaid 1 impl 0x10 ver 0x40 clock 168 MHz)
SunOS Release 5.5.1 Version Generic_103640-08 [UNIX(R) System V Release 4.0]
Copyright (c) 1983-1996, Sun Microsystems, Inc.
mem = 262144K (0x10000000)
avail mem = 259391488
Ethernet address = 8:0:20:7f:16:69
root nexus = Sun Ultra 2 UPA/SBus (2 X UltraSPARC 168MHz)
sbus0 at root: UPA 0x1f 0x0 ...
QLGC,isp0 at sbus0: SBus0 slot 0x2 offset 0x10000 SBus level 3 sparc9 ipl 5
isp0: Firmware Version: v1.24, Customer: 15, Product: 0
QLGC,isp1 at sbus0: SBus0 slot 0x3 offset 0x10000 SBus level 3 sparc9 ipl 5
isp1: Firmware Version: v1.24, Customer: 15, Product: 0
Fast Data Access Protection
{0} ok

> Machine has 2 wide differential controllers conected to 20 slots Clarion
> RAID unit and boots from one of 3 LUNs.
> It has no problems booting from internal disk (we keep one just for cases like this).
>
> This server was online for about 1 year.
> We have about 50 more servers like this with exactly same h/w config.
>
> I swaped m/b and SCSI host adapters already.
>
> thnx

-- 
      _  _  _	Michael Pavlov
   O /O /O /	DDTS/Sales & Trading
_/\_/\_/\_/	Merrill Lynch, New York
  / \/ \/ \	voice:	(212)236-2062
_/ _/\_/\_ \_	alpha:	(888)MERRIL0




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