Instruction Manual

Glossary 171
Related term: Not Secured
Secure Disk Group
Indicates that a disk group comprised of security-capable physical disks
is secured.
Secure Migration
The process of moving a set of secured disks to a different controller.
Security Enabled/Disabled
Indicates wether a security capable component is secured.
Security Key
A key to lock or unlock access to a security-enabled component. This key is
not utilized in the actual encryption of the data.
Self Encrypting Disk (SED)
Hardware-based encryption incorporated in a security-capable physical disk.
Single Bit ECC Errors
ECC stands for error correcting code. ECC errors are errors that occur in the
memory, which can corrupt cached data so that it has to be discarded. Single-bit
ECC errors can be handled by the firmware and do not disrupt normal
operation. A notification is sent if the number of single-bit errors exceeds a
threshold value.
SMART
The self-monitoring analysis and reporting technology (SMART) feature
monitors the internal performance of all motors, heads, and disk electronics to
detect predictable disk failures.
SMP
Serial Management Protocol. SMP communicates topology management
information directly with an attached SAS expander device. Each PHY on the
controller can function as an SMP initiator.
PERC7.2_UG.book Page 171 Thursday, March 3, 2011 2:14 PM