User`s guide

5-66
User's Guide
Limiting Access to Hardware Resources
You can functionally limit access to certain hardware elements. Locked elements can no
longer be accessed by the current domain, but are still physically available for access by
other domains. Previously locked elements can be unlocked so that they can be accessed by
the domain.
Notes:
• The domain must be INACTIVE before configuration changes can be made.
• Hardware locking / unlocking is only taken into account at the next domain power ON.
• Hardware components to be functionally included (unlocked) in the domain at the next
domain power ON are marked with a yellow
icon in the Lock Request column in the
Domain Hardware Details page.
• Hardware components to be functionally excluded (locked) from the domain at the next
domain power ON are marked with a red / yellow
icon in the Lock Request column
in the Domain Hardware Details page.
See Viewing Domain Configuration, Resources and Status, on page 3-35.
The following domain hardware elements can be locked / unlocked:
QBB
Each domain must comprise at least one QBB.
CPU
Each QBB must comprise at least one CPU.
If all CPUs are locked from a QBB, the QBB itself is locked.
IOCs
When a domain comprises more than one cell (therefore more than one
IOC), the Master IOC is the one hosting the boot disk. The other IOCs in
the domain are Slave IOCs.
Slave IOCs can be safely locked from a domain, but connected
peripherals will no longer be accessible.
Note:
If the Master IOC is locked, local system disks may no longer be
accessible and the domain may not power up.
IOC HubLinks
All IOC HubLinks can be safely locked from a domain, but connected
peripherals will no longer be accessible.
IOC HubLinks are organized as follows:
HubLink_1 controls PCI Slots 1 & 2
HubLink_2 controls PCI slots 3 & 4
HubLink_3 controls PCI slots 5 & 6
Note:
If Master IOC HubLink_1 is locked, local system disks may no longer be
accessible and the domain may not power up.
PCI Slots
All PCI slots not connected to a boot disk can be safely locked from a
domain, but connected peripherals will no longer be accessible.
Note:
If Master IOC PCI Slots 1, 2 are locked, system disks may no longer be
accessible and the domain may not power up.
Table 37. Hardware locking options
Note:
Slave IOLs can be safely locked from a domain, but connected peripherals will no longer be
accessible.
If the Master IOL is locked, the domain will not power up.