ECC memory

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ECC memory

(Error-Correcting Code memory) A memory system that tests for and corrects errors automatically, very often without the operating system being aware of it, let alone the user. As data are written into memory, ECC circuitry generates checksums from the binary sequences in the bytes and stores them in an additional seven bits of memory for 32-bit data paths or eight bits for 64-bit paths. When data are retrieved from memory, the checksum is recomputed to determine if any of the data bits have been corrupted. Such systems can typically detect and automatically correct errors of one bit per word and can detect, but not correct, errors greater than one bit. See EOS memory, chipkill, checksum and parity checking.

               Errors      Errors               It Can      It CanMemory Type    Detect      Correct

  Non-parity     Nothing     Nothing

  Parity         1 bit       Nothing

  ECC            1-2 bits    1 bit
References in periodicals archive ?
The TVS-ECx80U-SAS-RP series is powered by a quad-core Intel Xeon E3 v3 processor with 16GB DDR3 or 8GB DDR3 ECC RAM to deliver high performance up to 3,800+ MB/s throughput and 268,100+ IOPS, supports 10GbE-ready network connectivity, and features pre-installed 256GB mSATA modules for caching to improve the overall workflow of IOPS-demanding applications.
3GHz Processor, 8GB DDR3 ECC RAM, and a 10G PCIe card, the new 10G NAS provide lightning fast, persistent throughput speeds.
equipped with 4GB ECC RAM, which is expandable to 32GB.
0GHz PowerPC G5 processor with 512MB of PC3200 ECC RAM, a single 80GB Apple Drive Module with expandability for up to 750GB, dual Gigabit Ethernet on-board, FireWire 800 and USB 2.
0 GHz PowerPC G5 processors with 1GB of PC3200 ECC RAM, a single 80GB Apple Drive Module with expandability for up to 750GB, dual Gigabit Ethernet on-board, FireWire 800 and USB 2.
Although the AP200 is one of the most affordable workstations available, it offers many high-performance features, including a 350-400 MHz Intel Pentium II processor, 64-384 MB of 100 MHz ECC RAM, a choice of Ultra ATA or Wide-Ultra SCSI hard drive s (up to 9.
2004) benchmark test performed by Dell Labs in March and April 2006 on a PowerEdge 2850 configured with 2 GB DDR2 ECC RAM, two 3.
4GHz processor, 4GB DDR3 ECC RAM and with 10GbE-readiness and SSD caching options (including up to two internal mSATA slots), these models are capable of providing up to 3,700 MB/s throughput and 410,000 IOPS to boost the workflow of IOPS-demanding applications such as virtualization and data center deployment.
Starting at $80,000 for a base system with eight 550 MHz Pentium III Xeon processors (1 MB cache each) and 1 GB of ECC RAM, the Penguin 8500 delivers performance comparable to high-end RISC-based systems at a far lower price and with an open and reliable operating system.
Future-ready: The RS18016xs+ natively supports 6Gb/s SAS/SATA III technologies and can be upgraded with up to 32GB ECC RAM and 10GbE capabilities to ensure maximum compatibility and return on investment.
But it's ultimately our product that sets us apart, with cutting edge servers having at minimum 8 core Intel Xeon CPUs, 8GB+ DDR3 ECC RAM, multiple drives with hardware RAID10 for fast performance and redundancy.
Dubbed the Blackfoot 2500, this state-of-the-art machine can support dual Intel Pentium III processors, up to 2 gigabytes of ECC RAM, and 186 gigabytes of SCSI-3 hot-swappable storage driven by a high-performance RAID controller.