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Backup Exec I/O Device Errors

Posted on 2006-05-11
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Medium Priority
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Last Modified: 2012-01-19
Recently I have installed Veritas Backup Exec (10.0 Rev 5520) onto an IBM xSeries 236 (Windows 2003 Standard Server), and installed an Ultrium 1 tape device (FRU 39M5635), which had previously been used in a xSeries 235 (Windows 2000 Standard). The tape drive is using the onboard SCSI interface/controller (Controller 1 / SCSI Channel 1). The HDD's use Controller 1 / SCSI Channel 2 and are configured as RAID1 2x 73GB(Array A), RAID 5 3x 140GB(Array B), plus a 140GB hotspare


Since the reconfiguration, there have been numerous Backup Exec and Event Viewer device errors, as listed below:


Backup Exec Job Errors:

Job Log for Daily

Job Information
Job server: S001
Job name: Daily
Job started: 11 May 2006 at 12:59:19
Job type: Backup
Job Log: BEX_S001_00072.xml

Drive and media mount requested: 11/05/2006 12:59:19
V-79-57344-33039 - Error - Mount failed.
User canceled a Physical Volume Library operation.

Job Completion Status
Job ended: 11 May 2006 at 13:08:01
Completed status: Canceled
The job was canceled by user RACKLINE\_serviceDA.

Errors
Click an error below to locate it in the job log
V-79-57344-33039 - Error - Mount failed.
User canceled a Physical Volume Library operation.

 
Job ended: 11 May 2006 at 12:40:18
Completed status: Failed
Final error: 0xe00084eb - The storage device was reset.
Final error category: Backup Device Errors

For additional information regarding this error refer to link V-79-57344-34027
 
Errors
Click an error below to locate it in the job log
VerifyStorage device "HP 2" reported an error on a request to read data from media.
Error reported:
The I/O bus was reset.
V-79-57344-34027 - The storage device was reset.

 




Windows Event Viewer (Application):

Source: Backup Exec
Category: None
Event ID: 34113
Backup Exec Alert: Job Failed
(Server: "S001") (Job: "Eject Drive 00004") Eject Drive 00004 -- The job failed with the following error: The request could not be performed because of an I/O device error.
 
 For more information, click the following link:
http://eventlookup.veritas.com/eventlookup/EventLookup.jhtm

Source: Backup Exec
Category: Device
Event ID: 33152
Adamm Mover Error: Unload Rewind Failure!
Error = ERROR_IO_DEVICE
Drive = "HP 2"
    {46DD4729-DF6F-4033-B4F0-400779D29D63}
Media = ""
    {00000000-0000-0000-0000-000000000000}
Read Mode: SingleBlock(0), ScsiPass(0)
Write Mode: SingleBlock(0), ScsiPass(0)



Source: Backup Exec
Category: Device
Event ID: 33152
Adamm Mover Error: Unload Rewind Retry!
Error = ERROR_IO_DEVICE
Drive = "HP 2"
    {46DD4729-DF6F-4033-B4F0-400779D29D63}
Media = ""
    {00000000-0000-0000-0000-000000000000}
Read Mode: SingleBlock(0), ScsiPass(0)
Write Mode: SingleBlock(0), ScsiPass(0)


Source: Backup Exec
Category: Device
Event ID: 33152
Adamm Mover Error: GetDriveInfo Failure!
Error = ERROR_INVALID_HANDLE
Drive = "HP 2"
    {46DD4729-DF6F-4033-B4F0-400779D29D63}
Media = ""
    {00000000-0000-0000-0000-000000000000}
Read Mode: SingleBlock(0), ScsiPass(0)
Write Mode: SingleBlock(0), ScsiPass(0)


Source: Backup Exec
Category: None
Event ID: 57665
Storage device "HP 2" reported an error on a request to read data from media.

Error reported:
The I/O bus was reset.

 For more information, click the following link:
http://eventlookup.veritas.com/eventlookup/EventLookup.jhtml


Also, the Veritas Tape Drive properties are as follows:
Compression is enable
Block Size: 64K
Buffer Size: 64K
Buffer Count: 10
High Water Count: 0

Read Single Block Mode: not ticked
Write Single Block Mode: ticked
Read SCSI Pass-through mode: not ticked
Write SCSI Pass-through mode: ticked


I suspect that I am going to need to attach the tape drive to it's own SCSI controller, but I want to cover all angles before I go down this route...I dont want to purchase a new card and find myself in the same position.

If anyone could help, I would be very grateful


thanks in advance

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Comment
Question by:solutions-expert
6 Comments
 
LVL 2

Expert Comment

by:chris_bol
ID: 16659351
I used to work for IBM and had to implement some 236 servers with internal tape drives.  The problem that we found was inserting the 7K RAID card into the onboard slot actually takes over all teh SCSI bus and converts it to RAID.  We had a bit more luck in that we were able to back up , but restores never worked.  After speaking to IBM product specialists all the advice I got back was to install a separate SCSI card for the tape drive, I'm sure you are aware it isn't good practice to have a tape drive on a RAID controller.  Your best bet is to buy a cheap SCSI card (you don't need one with onboard BIOS) and cable your tape drive to this
0
 
LVL 5

Expert Comment

by:myfootsmells
ID: 16660794
Is your tape drive terminated properly?  All my tape drives are on a RAID controller and they work fine, but I've noticed that when it's attached to it's on SCSI card, it helps tremendously.

Also, I/O errors and tape errors can be caused by drives that haven't been cleaned in awhile.

myfootsmells
0
 
LVL 8

Expert Comment

by:b0fh
ID: 16661796
1.)  Double-check for proper termination & conflicting device IDs.

2.)  Clean drive & try another tape.

3.)  In Backup Exec, select the option to install Backup Exec device drivers for devices that don't already have drivers installed.  Alternately, replace existing drivers with either BE drivers or with latest from the device manufacturer.

4.)  Try another SCSI card.


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LVL 2

Expert Comment

by:Kalti
ID: 16667563
chris_bol, and your own fears are absolutely correct here, i look after many customers, many IBM servers, all the same story, it is now standard practice for us to quote a 100 dollar SCSI Card with our tape drives... They just do not like being on the same controller as a RAID array, even on a seperate channel.

Veritas / IBM / anyone who has had this problem before will to tell you the same thing. :)
0
 

Author Comment

by:solutions-expert
ID: 16890218
Apologies for the delay in closing this question.

Shortly after posting the question, I spoke to IBM, who recommended I install an Ultra SCSI320 (13N2249). This resolved most issues. However, the occassional spurious error appeared relating to 'bad restore or backup'. After scouring the veritas knowledgebase I conducted a long erase on all tapes previously used. The combined actions have resolved all issues.

This case can now be closed as I have answered most of my own questions. However, chris_bol did re-enforce my concerns.
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