The initialization of the split mirror as snapshot performs a crash recovery, rolls back all uncommitted transactions, and makes the database available for any read or write operation.
将分割镜像初始化为快照时，将执行崩溃恢复，回滚所有未提交的事务，并使数据库可以被所有读或写操作访问。
DB2 HADR (High availability Disaster Recovery) configurations can provide both resiliency of availability and some load balancing through use of the secondary mode as a read-only database.
通过使用备用模式(secondary mode)作为只读数据库，DB 2HADR(高可用性灾难恢复)配置可以同时提供具有弹性的可用性和一些负载均衡。
Most optimizations, checkpoint processing (aggregating intermediate results so that recovery actions never need to read the entire log), and "fringe cases" are beyond our scope.
大多数的最优化技术，检查点处理(聚集中间结果以便不需要读整个日志就可以恢复动作)和“边缘案例”超出了我们的范围。
The transaction log is stored as a sequential disk file (or sometimes in a raw partition) and will generally only be written to, not read from, except in the case of rollback or recovery.
事务日志存储为连续的磁盘文件(有时存储在原始分区中)，并且一般只是用于写入而不用于读取，回滚或恢复的情况例外。
However, if you change from read-only to read-write vice-versa since last backup, you have to restore the file and do a media recovery on it.
但如果自最后备份以后将只读更改为读写，或反之亦然，那您就必须恢复文件，并在其上进行媒介恢复。
With the 11.70 defragmenter, extents are merged while the partition is being read and updated, and full crash recovery is provided.
利用 11.70碎片整理程序，可在读取与更新分区时，对区段进行合并，并提供完全故障恢复能力。
Before performing this disaster recovery task, you must read the following important information.
执行此灾难恢复任务之前，必须阅读下列重要信息。
When a recovery is necessary, you can read a restart area and retrieve all the data from the last checkpoint operation.
需要恢复时，可以读取重新开始区域，并检索最后一次检查点操作中的所有数据。
While your PC may not be able to read data from your card, data-recovery software can help you.
而您的电脑可能无法读取数据，从您的信用卡，数据恢复软件可以帮助您。
Safe, reliable, read-only do not write in the recovery process will not cause secondary damage to the source data.
安全可靠，恢复过程中只读不写，不会对源数据造成二次破坏。
The other benefit of read-write snapshot is you can actually start MySQL Server on it and perform recovery, check tables or do whatever else you might need to do to ensure your backup is consistent.
可读写快照的另一个好处是可以启动MySQL服务器，执行恢复、检察数据表或者其他任何要保证备份一致性所需的操作。
The other benefit of read-write snapshot is you can actually start MySQL Server on it and perform recovery, check tables or do whatever else you might need to do to ensure your backup is consistent.
可读写快照的另一个好处是可以启动MySQL服务器，执行恢复、检察数据表或者其他任何要保证备份一致性所需的操作。
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