This section applies only to users of multiplex capability. The Main IQ Store of a multiplex database should occupy raw disks on a shared disk subsystem, typically a fiber channel disk array. Make sure that raw disks are available with enough space to store all persistent data in the IQ database.
Be sure to configure your shared disk subsystem so that
all systems where multiplex servers will reside can access the same
physical disks as local drives. This access must not use remote
drive mapping.
On Windows systems, raw device access is restricted to user accounts with Administrator privilege. To run the IQ servers using an account that lacks Administrator privilege, you must enable new device access permissions for that account after each system reboot. Use the rawaccedit utility to set permissions for devices for the current session. (Set up read/write access for the write server and read access for the query server(s).) You must run rawaccedit again after each reboot by a user with Administrator privilege for the machine.
Setting up the raw device
on Windows:
Type the following at the Command Prompt:
rawaccedit
The ASIQ Raw Device Access window opens. This window lists current devices and users.
In the dialog boxes below the display, type the name of the user and the device to which you wish to grant access. You can use Alt+N to tab to the User’s Name box and Alt+D to tab to the Raw Device Name box.
To specify a raw device that is not partitioned, simply type the physical drive number. Unpartitioned disks on a Windows system are named \\.\PhysicalDriveN, where N is a number starting with 0 and increasing as needed. To find the physical drive numbers, run Programs | Accessories | System Tools | System Information.
To specify a raw partition, use the letter assigned to that partition.
Click Add (Alt+A). The user name and device name appear in the top box.
Check the user name and device name display and correct any errors in spelling or device name specification format.
Click Update ACL and Exit (Alt+U).
Device access permissions remain until Windows is rebooted. After a reboot, the Administrator must run rawaccedit again to install the permissions.
To remove user access to a raw device, highlight the entry in the main window and click Remove. The rights are not revoked until the next reboot.
