Quantifying the benefits of using EFDs in OLTP environments.
确定在OLTP环境中使用EFD的好处。
Then, a 1.2 TB DB2 9.7 LUW database was created on the Tier 0 storage (EFDs).
然后，在Tier0存储（EFD）中创建一个 1.2TBDB2 9.7LUW数据库。
When used in OLTP environments, EFDs offer the following benefits over traditional HDDS.
在OLTP环境中，使用efd比传统的HDD有以下方面的优点。
One of the databases had its data stored on EFDs; the other had its data stored on similarly configured FC HDDs.
其中一个数据库将数据存储在EFD中；另一个将数据存储在有相似配置的FCHDD上。
As illustrated by the utilization map screenshot in Figure 1, monitoring showed 100% utilization on the EFDs and DA processors.
正如图1使用状况截图所表示的，数据显示EFD和DA处理器的使用率是100%。
Additionally, EMC EFDs safeguard data with full round-trip error correcting code (ECC) data integrity protection and destage power backup.
此外，EMCEFD也使用全双工错误修正码(ECC)数据完整性保护和离线电源备份来保护数据。
As Figure 2 illustrates, approximately 30,000 IOPS were measured on the front end, which is an excellent number considering only eight (8) EFDs were used.
图2显示，前端测得的IOPS值约为30,000，这是只使用8个EFD能达到的非常高的结果了。
The testing that is described demonstrated that EFDs provide a substantial improvement (approximately 9X) in I/O performance when used in an OLTP database environment.
所讨论的这个测试说明了EFD用在一个OLTP数据库环境时能大大提高I/O性能（约为9倍）。
Using innovative techniques and components, EMC's EFDs have been optimized for writes and longevity, The result is a significant improvement in EFDs write times, as compared to HDDs.
通过使用创新性技术和组件，EMC的EFD进行了写操作和使用寿命优化。这样EFD的写操作响应时间相对于HDD有了很大的改进。
Because workloads with high Symmetrix cache read-hit rates are serviced at memory access speed, storing the data needed on EFDs may not result in a significant increase in performance.
因为具有高symmetrix缓存读中率的工作负载都是以内存访问速度实现的，所以在EFD中存储所需要的数据可能不会对性能有大的改进。
Because workloads with high Symmetrix cache read-hit rates are serviced at memory access speed, storing the data needed on EFDs may not result in a significant increase in performance.
因为具有高symmetrix缓存读中率的工作负载都是以内存访问速度实现的，所以在EFD中存储所需要的数据可能不会对性能有大的改进。
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