在DS6800上分配给Windows的磁盘为什么不能被Windows认到？

存储设备：
DS6800 1750-511
主机操作系统：
Windows 2000
Windows 2003
已经安装了SDD
使用的HBA卡：
Qlogic，和其它不支持四位LUN地址的光纤接口卡。
在SAN Switch上已经做了正确的Zoning。
 
在DS6800上分配给Windows的磁盘不能被Windows操作系统认到。现象是：
    1.通过设备管理器看不见IBM 1750500 SCSI Disk Device。
    2.在磁盘管理器里看不见新增加的磁盘。
    3. 如果在主机上安装了诊断工具FAStT MSJ，可以发现FAStT MSJ可以认到磁盘。
    4. 安装Qlogic卡的主机在启动时按Alt+Q进入HBA卡的设置，扫描设备时也看不到DS6800的磁盘。
 
在DS6800上进行逻辑设置时，有两个地方要设置：

    1. 使用命令mkvolgrp来创建卷组，需要用参数-type来指定卷组的类型。
例如：
mkvolgrp -type scsimap256 -volume 0011,0112 x345_volgrp_1

-type ficonesconmask | scsimask | scsimap256 | os400mask |
essnetcs
(Optional). Specifies the type of the volume group.

ficonesconmask
Creates a FICON/ESCON mask volume group.

scsimask (default)
Creates a SCSI mask volume group. This option is available
if the host adapter supports four-byte LUN addresses.

scsimap256
Creates a SCSI map 256 volume group.

os400mask
Creates an OS400 mask volume group. The IBM iSeries host
system typically uses fixed block volumes of 520-byte
logical block size. This option is available only if the
host adapter supports four-byte LUN addresses.

essnetcs Creates an ESSNet Copy Services volume group. If this volume
group is specified, only the logical volumes in this volume
group are eligible to be controlled by Copy Services
operations that are initiated through the ESSNet. If this
volume group is not specified, any logical volume is
eligible to be controlled by Copy Services operations that
are initiated through the ESSNet. The ESSNet Copy Services
volume group can contain up to 64K count key data volumes,
fixed block volumes of 512-byte logical block size, or fixed
block volumes of 520-byte logical block size.

    2. 在做存储容量和主机的映射时，需要设置主机的类型为Intel - Windows 2000 或者Intel - Windows 2003.
例如：
mkhostconnect -wwname 10000000C94447D7 -profile "Intel - Windows 2000" -volgrp V1 ERP_DEV_fcs1
mkhostconnect -wwname 10000000C94447D8 -profile "Intel - Windows 2003" -volgrp V1 ERP_DEV_fcs1

备注：
     用命令lshosttype 来看哪些主机可以使用SCSI-map256，哪些主机可以使用SCSImask。

dscli> lshosttype -type scsimap256
Date/Time: 5 May 2005 5:43:39 IBM DSCLI Version: 5.0.3.5
HostType Profile AddrDiscovery LBS
=====================================================
AMDLinuxRHEL AMD - Linux RHEL LUNPolling 512
AMDLinuxSuse AMD - Linux Suse LUNPolling 512
AppleOSX Apple - OSX LUNPolling 512
Fujitsu Fujitsu - Solaris LUNPolling 512
HpTru64 HP - Tru64 LUNPolling 512
HpVms HP - Open VMS LUNPolling 512
LinuxDT Intel - Linux Desktop LUNPolling 512
LinuxRF Intel - Linux Red Flag LUNPolling 512
LinuxRHEL Intel - Linux RHEL LUNPolling 512
LinuxSuse Intel - Linux Suse LUNPolling 512
Novell Novell LUNPolling 512
SGI SGI - IRIX LUNPolling 512
SanFsLinux - Linux/SanFS LUNPolling 512
Sun SUN - Solaris LUNPolling 512
VMWare VMWare LUNPolling 512
Win2000 Intel - Windows 2000 LUNPolling 512
Win2003 Intel - Windows 2003 LUNPolling 512
zLinux IBM zSeries - zLinux LUNPolling 512

dscli> lshosttype -type scsimask
Date/Time: 5 May 2005 5:43:24 IBM DSCLI Version: 5.0.3.5
HostType Profile AddrDiscovery LBS
==================================================
Hp HP - HP/UX reportLUN 512
SVC San Volume Controller reportLUN 512
SanFsAIX IBM pSeries - AIX/SanFS reportLUN 512
pLinux IBM pSeries - pLinux reportLUN 512
pSeries IBM pSeries - AIX reportLUN 512