在Win2000中如何改变LTO设备的参数

产品：LTO3581/3582/3583/3584
主机平台：Intel-based servers
操作系统：Windows 2000
其他软件版本：N/A

    如果在Win2000中需要改变默认的参数如压缩、块大小，可以使用
NTUtil工具。NTUTIL工具提供了一系列的SET命令用来修改LTO设备
的参数。可以被修改的参数包括：

参数 值域 默认值
------- ---------- --------
压缩 0=关；1=开 0=off
块大小 数字 0=variable
块 NA NA

    具体的方法如下：
1）确定Win2000中要修改的设备

    进入NTUTIL选择88：List registered devices.
将显示如：
1.1)SCSI连接的显示将是：
enter selection: 88
Device found: Changer0 @"Scsi Port 3\Scsi Bus 1\Target Id 0\Logical Unit Id 1"
Device found: Tape0 @"Scsi Port 3\Scsi Bus 1\Target Id 0\Logical Unit Id 2"
Device found: Tape1 @"Scsi Port 3\Scsi Bus 1\Target Id 0\Logical Unit Id 4"
Total elapsed time in seconds = 0.00
Return to continue:

1.2)光纤连接的显示将是：
enter selection: 88
Device found: Tape0 @"Scsi Port 7\Scsi Bus 0\Target Id 0\Logical Unit Id 0"
Device found: Changer0 @"Scsi Port 7\Scsi Bus 0\Target Id 0\Logical Unit Id 1"
Device found: Tape1 @"Scsi Port 7\Scsi Bus 0\Target Id 1\Logical Unit Id 0"
Device found: Tape2 @"Scsi Port 7\Scsi Bus 0\Target Id 2\Logical Unit Id 0"
Total elapsed time in seconds = 0.00
Return to continue:

我们可以找到相应的驱动器设备如Tape0。

2）参数：
显示并设置参数的方法:

2.1)选择指定的驱动器设备：
进入NTUTIL；
选择1-set device special file/输入设备名tape0
-------------------------------------------------------------------------
enter selection: 1
Enter device special file (tape path) name or return for no change: tape0
Total elapsed time in seconds = 7.00
Return to continue:
-------------------------------------------------------------------------

2.2)打开指定的驱动器设备：
选择20-open
-------------------------------------------------------------------------
enter selection: 20
Enter open mode (1) RW (2) RO: 1
special file (\\.\tape2) will be opened
analyze() called with rc 7 err 0 (ERROR_SUCCESS) data 0
Total elapsed time in seconds = 2.00
Return to continue:
-------------------------------------------------------------------------

2.3)查看并修改参数：
选择44: set dev parms (compression)修改压缩参数
-------------------------------------------------------------------------
enter selection: 44
Compression off = 0, on = 1: 1
execute set_device_parameters compression = ON
analyze() called with rc 0 err 0 (ERROR_SUCCESS) data 0
Total elapsed time in seconds = 4.00
Return to continue:
-------------------------------------------------------------------------
选择43: set media parms(block size)块大小，默认的0。

这种修改是永久生效的。