I'm somewhat new to upkeeping  an OSF site, so if this is a really 
basic (read simple/lame) question, I promise to get better!
But here goes.
I have an OSF ver. 3.2.g system on which disks keep crashing  (under a 
load), and also a TLZ06 tape drive.   The message that I see under uerf 
follow this question. 
The basic question is "What is a CAM SCSI error 199" and "What do I 
do about it"   "Is this my problem with drives failing"
All responses are appreciated
TIA
snip ....
********************************* ENTRY     1.
********************************
----- EVENT INFORMATION -----
EVENT CLASS                             OPERATIONAL EVENT
OS EVENT TYPE                  300.     SYSTEM STARTUP
SEQUENCE NUMBER                  0.
OPERATING SYSTEM                        DEC OSF/1
OCCURRED/LOGGED ON                      Sun Apr  6 08:48:45 1997
OCCURRED ON SYSTEM                      hobbes
SYSTEM ID                 x00020007     CPU TYPE:  DEC 3000
SYSTYPE                   x00000000
MESSAGE                                 LK401 keyboard, language
English
                                         _(American)
                                        Alpha boot: available memory
                                        from
                                         _0x9f2000 to 0xc000000
                                        Digital UNIX V3.2G (Rev. 62);
                                        Sat Feb
                                         _1 09:51:33 CST 1997
                                        physical memory = 192.00
                                        megabytes.
                                        using 729 buffers containing
                                        5.69
                                         _megabytes of memory
                                        tc0 at nexus
                                        tcds0 at tc0 slot 4
                                        scsi0 at tcds0 slot 0
                                        rz0 at scsi0 bus 0 target 0
                                        lun 0 (DEC
                                         _    RZ26L    (C) DEC 440C)
                                        rz1 at scsi0 bus 0 target 1
                                        lun 0 (DEC
                                         _    RZ26L    (C) DEC 440C)
                                        rz2 at scsi0 bus 0 target 2
                                        lun 0 (DEC
                                         _    RZ26L    (C) DEC 440C)
                                        rz3 at scsi0 bus 0 target 3
                                        lun 0 (DEC
                                         _    RZ26L    (C) DEC 440C)
                                        rz4 at scsi0 bus 0 target 4
                                        lun 0 (DEC
                                         _    RZ26L    (C) DEC 440C)
                                        rz6 at scsi0 bus 0 target 6
                                        lun 0 (DEC
                                         _    RRD43   (C) DEC  0064)
                                        tz5 at scsi0 bus 0 target 5
                                        lun 0 (DEC
                                         _    TLZ06     (C)DEC 0491)
                                        ln0: DEC LANCE Module Name:
                                        PMAD-BA ln0 at tc0 slot 5 ln0:
                                        DEC LANCE Ethernet Interface,
                                         _hardware address:
                                         08-00-2B-39-7E-4D
                                        scc0 at tc0 slot 5
                                        bba0 at tc0 slot 5
                                        fb0 at tc0 slot 6
                                         1280X1024
                                        tza0 at tc0 slot 0
                                        tza0 firmware version: DEC TZA
                                         _SPO/A.14
                                        scsi1 at tza0
                                        rz9 at scsi1 bus 1 target 1
                                        lun 0 (DEC
                                         _    RZ28M    (C) DEC 0568)
                                        rz10 at scsi1 bus 1 target 2
                                        lun 0
                                         _(DEC     RZ28M    (C) DEC
                                         0568)
                                        DEC 3000 - M300X system
                                        Firmware revision: 6.0
                                        PALcode: OSF version 1.35
                                        lvm0: configured. lvm1:
                                        configured. dli: configured
                                        SuperLAT. Copyright 1993
                                        Meridian
                                         _Technology Corp. All rights
                                         _reserved.
********************************* ENTRY     2.
********************************
----- EVENT INFORMATION -----
EVENT CLASS                             OPERATIONAL EVENT
OS EVENT TYPE                  301.     SYSTEM SHUTDOWN
SEQUENCE NUMBER                 14.
OPERATING SYSTEM                        DEC OSF/1
OCCURRED/LOGGED ON                      Sun Apr  6 08:47:28 1997
OCCURRED ON SYSTEM                      hobbes
SYSTEM ID                 x00020007     CPU TYPE:  DEC 3000
SYSTYPE                   x00000000
MESSAGE                                 System rebooted by root
********************************* ENTRY     3.
********************************
----- EVENT INFORMATION -----
EVENT CLASS                             ERROR EVENT
OS EVENT TYPE                  199.     CAM SCSI
SEQUENCE NUMBER                 13.
OPERATING SYSTEM                        DEC OSF/1
OCCURRED/LOGGED ON                      Sun Apr  6 05:59:34 1997
OCCURRED ON SYSTEM                      hobbes
SYSTEM ID                 x00020007     CPU TYPE:  DEC 3000
SYSTYPE                   x00000000
----- UNIT INFORMATION -----
CLASS                         x0000     DISK
SUBSYSTEM                     x0000     DISK
BUS #                         x0000
                              x0008     LUN x0
                                        TARGET x1
********************************* ENTRY     4.
**************************
----- EVENT INFORMATION -----
B
EVENT CLASS                             ERROR EVENT
OS EVENT TYPE                  199.     CAM SCSI
SEQUENCE NUMBER                 12.
OPERATING SYSTEM                        DEC OSF/1
OCCURRED/LOGGED ON                      Sun Apr  6 05:59:34 1997
OCCURRED ON SYSTEM                      hobbes
SYSTEM ID                 x00020007     CPU TYPE:  DEC 3000
SYSTYPE                   x00000000
----- UNIT INFORMATION -----
CLASS                         x0022     DEC SIM
SUBSYSTEM                     x0000     DISK
BUS #                         x0000
                              x0008     LUN x0
                                        TARGET x1
********************************* ENTRY     5.
********************************
----- EVENT INFORMATION -----
EVENT CLASS                             ERROR EVENT
OS EVENT TYPE                  199.     CAM SCSI
SEQUENCE NUMBER                 11.
OPERATING SYSTEM                        DEC OSF/1
OCCURRED/LOGGED ON                      Sun Apr  6 05:59:34 1997
OCCURRED ON SYSTEM                      hobbes
SYSTEM ID                 x00020007     CPU TYPE:  DEC 3000
SYSTYPE                   x00000000
snip .....................................
Thanks
------------------------------------
Ken McCoy
Arkansas Public School Computer Net.
Received on Sun Apr 06 1997 - 19:28:17 NZST