PowerEdge offers a variety of memory options to meet your workloads requirements. Memory plays a key role in your overall performance along with your processor, accelerator and storage choices.
Intel® Optane™ Persistent Memory is a unique technology that bridges a gap between ‘memory’ and ‘storage’. Like RAM it sits within the PC memory hierarchy. By placing commonly used data and programs closer to the processor, Intel® Optane™ Persistent Memory allows the systems to access this information more quickly and improve overall system responsiveness. Intel® Optane™ Persistent Memory is designed to work in conjunction with DRAM not replace DRAM. These two memory technologies complement each other within the system. If all DIMM slots are being used, 50% of the DIMM slots will have DRAM and 50% of the DIMM slots will have Intel® Optane™ Persistent Memory.
Because of Memory Mode, Intel® Optane™ Persistent Memory can be used with almost any workload. In memory mode, the DRAM is used as a cache layer and the Intel® Optane™ Persistent Memory appears as the system memory. Any application can be used with a supported operating system. This allows a server to have a large memory footprint at a very compelling cost point. Because any application can be used, virtualization is a great use case for memory mode. Intel® Optane™ Persistent Memory is not persistent in Memory Mode.
Optimizer Mode is the default standard option for mirroring there are no special configurations.
Full Memory Mirroring allows two memory regions to be created, and a write transaction occurs in both locations to back up the data. When data is read back, if the primary copy has an ECC failure that cannot be corrected, the secondary copy is used. Full Memory Mirroring reduces capacity by half.
Each write transition is executed in two locations. Full Memory Mirroring is ideal for environments with low tolerance for memory failure & mission-critical operations. While write performance will be reduced this approach ensures a redundant copy of the data is maintained.
FRM Mode is exclusively supported in a VMware environment. It represents a variant of full memory mirroring, wherein only a portion is mirrored. Typically, a kernel is placed within this mirrored portion, providing the benefits of resiliency and the consequences of mirroring. This can be a beneficial alternative to full memory mirroring when only critical software needs the additional redundancy since it costs less than mirroring all system memory. There are no additional benefits or drawbacks.
Depending upon configuration, Idle CXL Latency is up to 300ns.
Dell advises against customers installing or removing CXL AIC or DIMMs from their systems. This process can be complex and may require specialized knowledge and tools to ensure it is done correctly and safely. To avoid potential damage to the system or voiding the warranty, it is recommended to contact the Dell support team for assistance.
