What is single device data correction?
(SDDC) Algorithm. The x4 SDDC is an ECC algorithm designed to recover from a single DRAM chip failure of the data signals. x4 SDDC can be configured to correct errors in x4 chips or to correct in x8 chips. Data or data pin errors in the same chip are correctable.
What is RAS Intel?
New Reliability, Availability, and Serviceability (RAS) Features in the Intel® Xeon® Processor Family.
What is Adddc memory?
Adaptive Double DRAM Device Correction (ADDDC) or Adaptive Double Device Data Correction (ADDDC) ADDDC Sparing—System reliability is optimized by holding memory in reserve so that it can be used in case other DIMMs fail. This mode provides some memory redundancy, but does not provide as much redundancy as mirroring.
How do I enable Adddc sparing?
Workaround
- Enter F1 Setup and set Operating mode to “Custom Mode”
- Set Memory Page Policy to “Closed”
- Set Memory ADDDC Sparing to “Enable”
What is RAS software?
A RAS includes specialized server software used for remote connectivity. This software is designed to provide authentication, connectivity and resource access services to connecting users. A RAS is deployed within an organization and directly connected with the organizaton’s internal network and systems.
What is RAS feature?
Reliability, Availability, and Serviceability Features. Reliability, availability, and serviceability (RAS) are aspects of a system’s design that affect its ability to operate continuously and to minimize the time necessary to service the system.
What is Adddc setting?
When Adaptive Double DRAM Device Correction (ADDDC) is enabled, failing DRAMs are dynamically mapped out. When set to Enabled it can have some impact to system performance under certain workloads. This feature is applicable for x4 DIMMs only. This option is set to Enabled by default.
What is post package repair?
Post Package Repair (PPR) – The second “self-healing’ memory enhancement, results in repairing a failing memory location on a DIMM by disabling the location/address at the hardware layer enabling a spare memory row to be used instead.
What is memory RAS feature?
Reliability, availability and serviceability (RAS) is a computer hardware engineering term referring to the elimination of hardware failures to ensure maximum system uptime. The memory RAS features in Lenovo® ThinkSystem™ servers include Error Correcting Code (ECC), spare memory banks, page retirement and mirroring.
What is VPN and RAS?
• Communications Costs ¬ Using SmartGate VPN, remote users place a local call to their Internet Service Provider (ISP) then connect to the organizational LAN via the Internet. Using RAS, remote users place a long-distance or toll call to the organization«s modem banks in order to connect to the LAN.
What is RAS command?
A remote access service (RAS) is any combination of hardware and software to enable the remote access tools or information that typically reside on a network of IT devices.
What are the different types of servers explain?
There are many types of servers, including web servers, mail servers, and virtual servers. An individual system can provide resources and use them from another system at the same time. This means that a device could be both a server and a client at the same time.
What is double device data correction (DDD)?
Double Device Data Correction refers to the ability of the error correction code to correct errors resulting from the failure of two DRAM devices. In lockstep mode, Intel Xeon processor E7 v2 product family’s ECC ha rdware can correct errors in two x4 DRAM devices provided the failures are separated in time.
What is single device data correction (ECC)?
Single Device Data Correction refers to the ability of the error correction code to correct errors resulting from the failure of a single DRAM device. In independent channel mode, Intel Xeon processor E7 v2 product family’s ECC hardware can correct errors in a single x4 DRAM device.
What is x4 SDDC in Intel® E7500 chipset?
The Intel® E7500 Chipset MCH use the x4 SDDC implementation that allows the memory system to detect and correct 1 to 4-bit internal data and data pin failures within one DDR memory device and detect up to 8-bit internal data and data pin failures within two DDR memory devices.
Is the information in this document provided in Conne ction with Intel®products?
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