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    • 4. 发明申请
    • Data Protection for Variable Length Records by Utilizing High Performance Block Storage Metadata
    • 通过利用高性能块存储元数据对可变长度记录进行数据保护
    • US20090259456A1
    • 2009-10-15
    • US12100237
    • 2008-04-09
    • Stefan AmannGerhard BanzhafKenneth Wayne BoydKenneth Day, IIIJeffrey William PalmHelmut H. WeberHarry Morris Yudenfriend
    • Stefan AmannGerhard BanzhafKenneth Wayne BoydKenneth Day, IIIJeffrey William PalmHelmut H. WeberHarry Morris Yudenfriend
    • G06F9/455
    • G06F11/1076G06F11/1004
    • An enhanced mechanism for providing data protection for variable length records utilizes high performance block storage metadata. In an embodiment, an emulated record that emulates a variable length record, such as a Count-Key-Data (CKD) record or an Extended-Count-Key-Data (ECKD) record, is generated by a Host Bus Adapter (HBA) of a mainframe system. The emulated record comprises a sequence of extended fixed-length blocks, each of which includes a data block and a footer. A confluence of the footers defines a high performance block storage metadata unit associated with the emulated record and includes a checksum that covers all data blocks and all footers of the entire emulated record. In one embodiment, the checksum is checked during transit of the emulated record between a HBA and a storage subsystem (e.g., by the HBA when the emulated record is received from the storage subsystem, and/or by a switch in the data transfer path), during a hardening step when writing the emulated record to a disk, and/or during a verification step when reading the emulated record from the disk.
    • 用于为可变长度记录提供数据保护的增强机制利用高性能块存储元数据。 在一个实施例中,仿真诸如计数密钥数据(CKD)记录或扩展计数密钥数据(ECKD)记录的可变长度记录的仿真记录由主机总线适配器(HBA)生成, 的大型机系统。 仿真记录包括一系列扩展的固定长度块,每个块包括数据块和页脚。 页脚的汇合定义了与仿真记录相关联的高性能块存储元数据单元,并且包括覆盖整个模拟记录的所有数据块和所有页脚的校验和。 在一个实施例中,在仿真记录在HBA和存储子系统之间(例如,当从存储子系统接收到仿真记录和/或通过数据传输路径中的交换机通过HBA)传送期间检查校验和, 在将仿真记录写入磁盘的硬化步骤期间和/或在从盘读取仿真记录时的验证步骤期间。
    • 5. 发明授权
    • Simultaneous mixed protection modes over a virtualized host adapter
    • 在虚拟化主机适配器上同时进行混合保护模式
    • US08561203B2
    • 2013-10-15
    • US13149127
    • 2011-05-31
    • Stefan AmannGerhard BanzhafRalph FriedrichRaymond M. HiggsGeorge P. Kuch
    • Stefan AmannGerhard BanzhafRalph FriedrichRaymond M. HiggsGeorge P. Kuch
    • G06F21/00
    • G06F21/64
    • A method for supporting simultaneous mixed protection modes for a write operation. The method includes receiving a write request that includes write data, and is received from one of a plurality of requestors. At least one of the requestors does not support data integrity protection. It is determined if data integrity protection is required for the write operation. It is additionally determined if the data integrity protection is supported by the requestor. Once the determination is made, the data integrity protection value is calculated if data integrity protection is required and is not supported by the requestor. The write data is encoded with the data integrity protection value prior to being written. If the requestor supports data integrity protection, then data integrity protection values are applied to the write data prior to writing the data to the external storage.
    • 一种用于支持写入操作的同时混合保护模式的方法。 该方法包括接收包括写数据的写请求,并从多个请求者之一接收。 至少有一个请求者不支持数据完整性保护。 确定写入操作是否需要数据完整性保护。 另外确定请求者是否支持数据完整性保护。 一旦作出确定,如果需要数据完整性保护并且请求者不支持,则计算数据完整性保护值。 写入数据在写入之前用数据完整性保护值进行编码。 如果请求者支持数据完整性保护,则在将数据写入外部存储器之前,将数据完整性保护值应用于写入数据。
    • 9. 发明申请
    • SIMULTANEOUS MIXED PROTECTION MODES OVER A VIRTUALIZED HOST ADAPTER
    • 虚拟主机适配器同时兼容的混合保护模式
    • US20120311716A1
    • 2012-12-06
    • US13149127
    • 2011-05-31
    • Stefan AmannGerhard BanzhafRalph FriedrichRaymond M. HiggsGeorge P. Kuch
    • Stefan AmannGerhard BanzhafRalph FriedrichRaymond M. HiggsGeorge P. Kuch
    • G06F21/00
    • G06F21/64
    • A method for supporting simultaneous mixed protection modes for a write operation. The method includes receiving a write request that includes write data, and is received from one of a plurality of requestors. At least one of the requestors does not support data integrity protection. It is determined if data integrity protection is required for the write operation. It is additionally determined if the data integrity protection is supported by the requestor. Once the determination is made, the data integrity protection value is calculated if data integrity protection is required and is not supported by the requestor. The write data is encoded with the data integrity protection value prior to being written. If the requestor supports data integrity protection, then data integrity protection values are applied to the write data prior to writing the data to the external storage.
    • 一种用于支持写入操作的同时混合保护模式的方法。 该方法包括接收包括写数据的写请求,并从多个请求者之一接收。 至少有一个请求者不支持数据完整性保护。 确定写入操作是否需要数据完整性保护。 另外确定请求者是否支持数据完整性保护。 一旦作出确定,如果需要数据完整性保护并且请求者不支持,则计算数据完整性保护值。 写入数据在写入之前用数据完整性保护值进行编码。 如果请求者支持数据完整性保护,则在将数据写入外部存储器之前,将数据完整性保护值应用于写入数据。