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abhijitm00
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Backups not running - I/O errors

Hi,

I have a Sunfire v20z running Windows Server 2003 Sp2 connected to a Storedge L8 Auto Tape Loader with a single drive in it. Backup software used is Legato Networker 7.2. We had a power failure some time ago and after that backups have not been working. Initially I used to get a symmpi error in the system log, so I changed the SCSI card, SCSI cable on the server and also changed the tape drive. The error went away but backups are still not working. I do not get any error on Windows now but Legato gives me I/O errors after backing up somewhere between 30MB and 60MB. No backups work although I can mount, unmount etc from the tape drive and also using the software. So there seems to be a connection between the two but it does not allow backups to run for long. Also RSM is not controlling the tape drive.

I have tried changing tapes, relabeling, cleaning the drive but its no use. The app logs for Networker do not show anything besides I/O errors. Any suggestions are welcome. TIA
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abhijitm00

8/22/2022 - Mon
abhijitm00

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Oh I have updated the drivers for the LSI U320 SCSI card as well. Thanks
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Naga Bhanu Kiran Kota

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abhijitm00

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I will try that. Is there a place where I can see if the speed settings are correct for the tape drive or the software? It seems to be writing too fast. THanks.
abhijitm00

ASKER
Hey just tried the repair but that did not work.
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William Peck
Naga Bhanu Kiran Kota

Hi,

try to open hklm/software/legato and see if there is reference to the tape engine and it should have buffer settings you can reduce that.

bhanu
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themusiclover

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abhijitm00

ASKER
hi bhanukir7, there is no reference to the tape engine in the registry. Is there anywhere else I can look for it?
abhijitm00

ASKER
hi musiclover, thanks for the post. I ran the ltt software from HP and everything looks good connectionwise. I have attached the log below:
InstallCheck done for HP Ultrium 2-SCSI
 
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Drive Connectivity Test :

Drive Connectivity test passed.                                                            
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
System Configuration Test :

HBA Model : LSI Logic PCI-X Ultra320 SCSI Host Adapter                    Please check www.hp.com/go/connect for HBA compatibility.
This HBA has a dedicated IRQ channel configured.                              
There is 1 device connected to the HBA.                                              
This drive has a recommended driver installed.                                  
                                                                                                               
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Drive Performance Test :

Drive Performance test passed.                                                            Drive, cable, and HBA performance is optimal.
Measured native transfer rate is 61MB/S, 100% of the maximum        
                                                                                                               
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

I will check the multiple LUN situation tomorrow when I can logon physically to the machine and check the BIOS. How can I change or check to see what mode it is in (seq or random)?
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