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    • 2. 发明授权
    • Dynamic storage allocation with virtually provisioned devices
    • 动态存储分配与虚拟设备
    • US08972694B1
    • 2015-03-03
    • US13429622
    • 2012-03-26
    • Sean DolanAlex VeprinskyOwen MartinMarik MarshakHui WangXiaomei Liu
    • Sean DolanAlex VeprinskyOwen MartinMarik MarshakHui WangXiaomei Liu
    • G06F12/00G06F13/00G06F13/28
    • G06F13/28G06F3/0608G06F3/0665G06F3/0685G06F12/0646
    • A write operation writes first data to a target logical address range included in a first logical address range of a virtually provisioned device. It is determined that physical storage is not allocated for the target logical address range. First processing is performed to allocate a first portion of physical storage having a first corresponding logical address subrange that includes the target logical address range. The first portion is allocated from a physical device included in a first storage tier. The first processing includes selecting the first storage tier from multiple storage tiers in accordance with selection criteria including metrics characterizing an expected workload or level of activity for the first corresponding logical address subrange of the virtually provisioned device. Mapping information is updated to indicate that the first corresponding logical address subrange of the virtually provisioned device maps to the first portion of physical storage.
    • 写入操作将第一数据写入包含在虚拟设备的第一逻辑地址范围内的目标逻辑地址范围。 确定没有为目标逻辑地址范围分配物理存储。 执行第一处理以分配具有包括目标逻辑地址范围的第一对应逻辑地址子范围的物理存储器的第一部分。 第一部分从包括在第一存储层中的物理设备分配。 第一处理包括根据选择标准来选择来自多个存储层的第一存储层,所述选择标准包括表征虚拟提供设备的第一对应逻辑地址子范围的预期工作负载或活动级别的度量。 更新映射信息以指示虚拟供应设备的第一对应逻辑地址子范围映射到物理存储的第一部分。
    • 4. 发明授权
    • Data storage system modeling
    • 数据存储系统建模
    • US08688878B1
    • 2014-04-01
    • US13538245
    • 2012-06-29
    • Sean C. DolanHui WangMarik MarshakXiaomei LiuOwen MartinAlexandr VeprinskyAhmet Kirac
    • Sean C. DolanHui WangMarik MarshakXiaomei LiuOwen MartinAlexandr VeprinskyAhmet Kirac
    • G06F7/00
    • G06F3/0685G06F3/061G06F3/0649G06F3/0653
    • Described is data storage system modeling. Received at a first data storage system is information representing a workload for I/O operations directed to a logical devices having storage provisioned on physical devices of a second data storage system. Information representing the workload may be obtained by performing discovery processing to discover performance characteristics of the physical devices of the second data storage system. Discovery processing may include receiving, at the first data storage system, I/O operations from a client directed to the set of one or more logical devices having storage provisioned on the physical devices of the second data storage system. The I/O operations are then issued to the second data storage system. In response, performance data is obtained at the first data storage system representing the workload for the plurality of I/O operations. Performance of the second data storage system is modeled in accordance with the workload.
    • 描述的是数据存储系统建模。 在第一数据存储系统中接收的是表示针对具有存储在第二数据存储系统的物理设备上的存储器的逻辑设备的I / O操作的工作负载的信息。 可以通过执行发现处理来发现第二数据存储系统的物理设备的性能特征来获得表示工作负载的信息。 发现处理可以包括在第一数据存储系统处从客户端接收指向在第二数据存储系统的物理设备上具有存储的一个或多个逻辑设备的集合的I / O操作。 然后将I / O操作发给第二数据存储系统。 作为响应,在表示多个I / O操作的工作负荷的第一数据存储系统处获得性能数据。 根据工作量对第二个数据存储系统的性能进行建模。
    • 8. 发明授权
    • Techniques for automated data compression and decompression
    • 自动数据压缩和解压缩技术
    • US08862837B1
    • 2014-10-14
    • US13429669
    • 2012-03-26
    • Marik MarshakAlex VeprinskyAmnon NaamadSean Dolan
    • Marik MarshakAlex VeprinskyAmnon NaamadSean Dolan
    • G06F12/00G06F13/00G06F13/28
    • G06F12/0868
    • Described are techniques for automated compression and/or decompression of data. Idle counters are received for data portions which indicate a level of inactivity with respect to idle criteria for the data portions. Compression criteria is received specifying conditions for determining whether a data portion is a candidate for data compression. The compression criteria includes a time compression threshold indicating a minimum amount of time that a data portion has been deemed idle with respect to said idle criteria. A data portion that qualifies as a candidate for data compression has an associated idle counter indicating an inactivity level that is greater than the time compression threshold. Processing determines whether a first data portion is a candidate for data compression in accordance with the compression criteria. If the first data portion is determined as a candidate for data compression, compression processing is performed for the first data portion.
    • 描述了用于数据的自动压缩和/或解压缩的技术。 对于数据部分接收空闲计数器,这些数据部分指示关于数据部分的空闲标准的不活动级别。 接收压缩标准,指定用于确定数据部分是否是用于数据压缩的候选者的条件。 压缩标准包括指示数据部分相对于所述空闲标准被视为空闲的最小时间量的时间压缩阈值。 限定为数据压缩的候选者的数据部分具有指示大于时间压缩阈值的不活动级别的相关联的空闲计数器。 处理根据压缩标准确定第一数据部分是否是用于数据压缩的候选。 如果第一数据部分被确定为用于数据压缩的候选者,则对第一数据部分进行压缩处理。