Intel SR1GZ CM8063601454907 ユーザーズマニュアル
製品コード
CM8063601454907
Reliability, Availability, Serviceability, and Manageability
52
Intel
®
Xeon
®
Processor E7-2800/4800/8800 v2 Product Family
Datasheet Volume Two: Functional Description, February 2014
7.1.1
Error Sources
In general two kinds of errors could occur in a system - Hard Errors or Soft Errors. Hard
Errors are caused by various sources of electrical noise or by electrical marginality of
the physical links and power supplies. Hard errors generally manifest as ‘stuck-lane’ or
‘stuck-bit’.
Errors are caused by various sources of electrical noise or by electrical marginality of
the physical links and power supplies. Hard errors generally manifest as ‘stuck-lane’ or
‘stuck-bit’.
Note:
Within the silicon, often “Hard Errors” are defined as permanent circuit level faults.
Such hard errors are usually associated with manufacturing defects or marginality that
can be screened out by the silicon testing process.
While Hard errors are easy to comprehend, Soft errors requires additional explanation.
7.1.1.1
Soft Errors
VLSI circuits are in general susceptible to Soft Errors. Soft Errors are random false logic
values that are caused by the outside environment. Soft Errors could occur in any good
part in a system.
values that are caused by the outside environment. Soft Errors could occur in any good
part in a system.
Unless indicated specifically, this chapter uses term “Errors” to represent both soft
errors and hard errors.
errors and hard errors.
7.1.2
Error Classification
Processor detected errors can be classified as
Some of detected errors can be easily corrected using built-in features such as ECC in
iMC modules and these types of errors are called “Corrected Errors” (CE). Uncorrected
non-data errors such as DDR3 address/control parity errors are considered as fatal
errors. The other remaining detected errors are uncorrected data errors (UC errors).
When Intel Xeon processor E7 v2 product family is configured in “Legacy IA-32 MCA”
iMC modules and these types of errors are called “Corrected Errors” (CE). Uncorrected
non-data errors such as DDR3 address/control parity errors are considered as fatal
errors. The other remaining detected errors are uncorrected data errors (UC errors).
When Intel Xeon processor E7 v2 product family is configured in “Legacy IA-32 MCA”
Figure 7-1. Error Classification