Support for solid-state disks (SSDs)
支持固态磁盘（solid-state disks，SSDs）
SSDs shine really bright when random I/Os are being executed.
但在执行随机I/O 操作时，SSD的确更胜一筹。
Think about which tasks SSDs enable you to accomplish differently.
考虑SSD能让您出色完成哪些任务。
So, what's the best way to determine which DB2 tables or indexes to place on SSDs?
那么，确定将哪些db2表或索引放在SSD上的最佳方式是什么？
In many cases, organizations will be able to place all of their databases on SSDs.
在很多情况下，组织可以把所有数据库放在SSD。
So is the open-source database Microsoft's real target with SSDS?
那么，开源数据库是不是微软在SSDS方面的真正目标？
Tablespaces that have a lower sequentiality ratio also are better candidates for SSDs.
具有较低连续率的表空间也比较适合放在SSD上。
Figure 2: Identifying high-use data can help maximize the performance benefits of SSDS.
图2：挑出高使用率数据有助于将SSD带来的性能好处最大化。
But although SSD costs are declining every quarter, SSDs are still more expensive than HDDs.
但是，虽然SSD的成本每个季度都在递减，但是SSD仍然比HDD昂贵。
We then tested several scenarios after migrating portions of the database application to SSDs.
然后，我们将数据库应用程序的一部分迁移到SSD，对一系列的场景进行测试。
All existing data is moved underneath the cover from regular disk drives to SSDs automatically.
所有现有数据都在后台从常规硬盘驱动器自动移动到SSD。
Silent operation - SSDs are completely silent when they are running, HDDs are most definitely not
工作静音——SSD运行时完全静音，硬盘驱动器则绝对不可能。
CHGLFM will move all the secondary indexes associated with a join logical file on or off of SSDs.
CHGLFM将把与连接逻辑文件有关的所有二级索引移入或移出ssd。
Figure 1 below shows this differences between regular disk drives and SSDs in terms of performance.
图1展示了常规硬盘驱动器与SSD之间的性能差异。
When you consider the purchase of SSDs for your enterprise-class storage array, think beyond speeds and feeds.
当您考虑为企业级存储阵列购买SSD时，不仅要考虑速度和容量。
The SSDs will sometimes fail as well, and the company is working on ways to ensure a foolproof wipe of stored data.
不过固态硬盘有时候也会出现故障，该公司正在寻求一种确保万无一失的清除硬盘数据的方式。
The easiest approach would be simply to replace all regular disk drives with SSDs and move over all objects and data.
最简单的方法是用SSD替换所有常规硬盘驱动器并移动所有对象和数据。
A potential course of action here is to reduce the size of the buffer pools supporting the table Spaces resident on SSDs.
这里，可能的动作是减小支持驻留在SSD上的表空间的缓冲池大小。
IBM I has all the characteristics and information to be able to identify and move certain most frequently used objects to SSDs.
IBMi拥有所有相关特征和信息，能够识别那些使用频率最高的对象并将其移动到SSD。
Use of SSDs drives are substantially faster than traditional disks and thus can provide performance benefits to most applications.
使用SSD硬盘要比使用传统磁盘快许多，因此可以为大多数应用程序提供性能增益。
Other graphs can be selected to show the total number of I/Os performed per second which will also indicate the improvement from SSDs.
还可以选择其他曲线图来显示每秒执行的I/O总量，这也能体现通过 SSD 实现的改进。
These dramatic improvements have made SSDs prime candidates for use in performance-sensitive or mission-critical database applications.
如此急剧的进步使得SSD成为性能敏感或关键任务数据库应用程序的首选。
Sequential access, as exhibited by data warehouse activities, does not produce as great a performance improvement with SSDs as does random access.
在数据仓库活动所用到的顺序存取中，SSD的性能提升没有随机访问那么大。
PCMARK 8 Storage measures the performance of SSDs, HDDs and hybrid drives in your system. The results are not influenced by CPU or GPU performance.
PCMARK8存储测试衡量你系统里的固态硬盘，机械硬盘和混合硬盘性能，测试结果不受到CPU或者GPU性能的影响。
From this data, you use the equations in Figure 3 to calculate four metrics that help determine which tablespaces are better candidates to place on SSDS.
根据该数据，可以使用图3中的公式计算4个指标，这些指标将帮助确定哪些表空间更适合放在SSD上。
Recently, the density of SSDs has tremendously improved; 200 GB and larger drives already are available, and capacity is expected to double during the next six months.
最近，SSD的密度已经大大提高；已经出现200GB以上的驱动器，并且在未来6个月内容量有望再次翻番。
The initial support for SSDs in V5R4 allowed users to specify a media preference at creation or altered later with a change command as shown in the following examples.
V 5 R 4中首次提供的SSD支持允许用户在创建时指定媒介首选项，或稍后使用如下所示的命令进行修改。
The initial support for SSDs in V5R4 allowed users to specify a media preference at creation or altered later with a change command as shown in the following examples.
V 5 R 4中首次提供的SSD支持允许用户在创建时指定媒介首选项，或稍后使用如下所示的命令进行修改。
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