SCF Reference Manual for the Storage Subsystem (G06.28+, H06.05+, J06.03+)

10 Configuring and Managing Virtual Disks
Virtual disks share the object type of DISK with disks (discussed in “Configuring Disks” (page 70)).
A virtual disk is created by configuring one or more disks in a storage pool as part of “Storage
Management Foundation (SMF)” (page 26). For information about disks and their states, see “The
DISK Object” (page 33)and “Object States and Substates of Disks” (page 34). This chapter
describes:
• “Overview of Virtual Disks” (page 143)
“Displaying Configuration Information for Virtual Disks” (page 144)◦
◦ “Displaying Current Status Information” (page 146)
• “Displaying Information” (page 144)
“Displaying Configuration Information” (page 171)◦
◦ “Displaying Current Status Information” (page 146)
• “Configuring a Virtual Disk” (page 147)
“Adding a Virtual Disk” (page 147)◦
◦ “Troubleshooting Problems With Adding a Virtual Disk” (page 148)
◦ “Starting a Virtual Disk” (page 150)
◦ “Example: Adding a Similar Disk Using the LIKE Attribute” (page 148)
◦ “Example Adding a Similar Disk Using the OBEYFORM Attribute” (page 148)
• “Managing a Virtual Disk” (page 150)
“Resetting a Virtual Disk” (page 151)◦
◦ “Stopping a Virtual Disk” (page 151)
◦ “Troubleshooting Problems With Adding a Virtual Disk” (page 148)
Overview of Virtual Disks
To understand virtual disks:
• “How Virtual Disks Relate to Physical Disks” (page 143)
• “Functions of the Virtual Disk Process” (page 144)
• “Location-Independent Naming” (page 144)
How Virtual Disks Relate to Physical Disks
A virtual disk appears to application programs to be a physical disk in most respects. However,
some SCF commands affect only physical disks, not virtual disks, and other commands affect only
virtual disks, not physical disks.
Overview of Virtual Disks 143