Accusys ExaRAID A16U-IS - Manual (Page 32)

Accusys A16R/A16U-IS
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H. Set PathGuard on Windows 2003 Server
PathGuard is the bundled multi-path IO solution for Windows 2003, 2003
R2 32bit / 64bit, platforms, and it is based on Microsoft Multipath I/O
(MPIO) framework. PathGuard consists of MPIO drivers and a web-based
path manager GUI that allows you to manage MPIO configurations for
multiple host computers.
The MPIO drivers include standard drivers from Microsoft and DSM
(Device Specific Module) provided by the RAID system supplier.
The following steps are required for enabling PathGuard MPIO:
1. Complete the hardware and software setup at RAID systems.
2. Install the PathGuard package to the host computer. Register the
vendor name and model name of your RAID system to the PathGuard
(optional).
3. Install the PathGuard MPIO driver.
4. Reboot the host computer.
5. Launch PathGuard GUI to set multi-path policies.
Windows MPIO framework requires rebooting the host computer when
enabling the MPIO driver on the host computer, such that the regular disk
device drivers will be replaced by the MPIO disk drivers.
Windows can properly detect multi-path disks only during MPIO driver
installation, so reconfiguration (like adding/removing paths or LUNs)
requires you to reinstall the PathGuard MPIO driver and reboot the host
computer.
You might need also to manually rescan the physical drives (use
Computer Management > Storage > Disk Management) When multi-path
disks are not properly detected.