SYMPTOMS
In “properties” of a tape drive in (sample) “Networker Console” the “Volume block size” is 64KB the value normally used for a LTO drive is 128KB.
CAUSE
The Microsoft default driver for “LSI Logic PCI-X Ultra 320 SCSI Host Adapter” card don’t manage “volume block size” greater than 64KB by default.
RESOLUTION
Set values of registry key to “255 (00FF)” to allow maximum and let the TAPE Driver driver manage the size automatically.
Use registry editor to add folowing keys :
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\symmpi\Parameters]
"BusType"=dword:00000001
"MaximumSGList "=dword:000000ff
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\symmpi\Parameters\Device]
"DriverParameter"="PlaceHolder=0;"
"MaximumSGList"=dword:000000ff
"NumberOfRequests"=dword:000000ff
"CreateInitiatorLU"=dword:00000001