Techniques for encrypting data on storage devices using an intermediate key
    4.
    发明授权
    Techniques for encrypting data on storage devices using an intermediate key 有权
    使用中间密钥加密存储设备上的数据的技术

    公开(公告)号:US08315394B2

    公开(公告)日:2012-11-20

    申请号:US11923123

    申请日:2007-10-24

    IPC分类号: G06F21/00

    CPC分类号: H04L9/0822 H04L9/0863

    摘要: A data storage device encrypts data stored in non-volatile memory using a bulk encryption key. The data storage device uses a key derivation function to generate an initial encryption key. The data storage device then wraps an intermediate encryption key with the initial encryption key and stores the wrapped intermediate key in the non-volatile memory. The data storage device wraps the bulk encryption key with the intermediate encryption key and stores the wrapped bulk encryption key in the non-volatile memory. The data storage device can unwrap the wrapped intermediate key to generate the intermediate encryption key using the initial encryption key. The data storage device can unwrap the wrapped bulk encryption key to generate the bulk encryption key using the intermediate encryption key. The data storage device decrypts data stored in the non-volatile memory using the bulk encryption key.

    摘要翻译: 数据存储设备使用批量加密密钥对存储在非易失性存储器中的数据进行加密。 数据存储装置使用密钥导出函数来生成初始加密密钥。 然后,数据存储设备将具有初始加密密钥的中间加密密钥包裹起来,并将包裹的中间密钥存储在非易失性存储器中。 数据存储设备将批量加密密钥与中间加密密钥打包,并将包装的批量加密密钥存储在非易失性存储器中。 数据存储设备可以使用初始加密密钥解包包裹的中间密钥以产生中间加密密钥。 数据存储设备可以使用中间加密密钥解开包装的批量加密密钥以生成批量加密密钥。 数据存储装置使用批量加密密钥对存储在非易失性存储器中的数据进行解密。

    Techniques For Encrypting Data On Storage Devices Using An Intermediate Key
    5.
    发明申请
    Techniques For Encrypting Data On Storage Devices Using An Intermediate Key 有权
    使用中间密钥对存储设备上的数据进行加密的技术

    公开(公告)号:US20090110191A1

    公开(公告)日:2009-04-30

    申请号:US11923123

    申请日:2007-10-24

    IPC分类号: H04L9/08

    CPC分类号: H04L9/0822 H04L9/0863

    摘要: A data storage device encrypts data stored in non-volatile memory using a bulk encryption key. The data storage device uses a key derivation function to generate an initial encryption key. The data storage device then wraps an intermediate encryption key with the initial encryption key and stores the wrapped intermediate key in the non-volatile memory. The data storage device wraps the bulk encryption key with the intermediate encryption key and stores the wrapped bulk encryption key in the non-volatile memory. The data storage device can unwrap the wrapped intermediate key to generate the intermediate encryption key using the initial encryption key. The data storage device can unwrap the wrapped bulk encryption key to generate the bulk encryption key using the intermediate encryption key. The data storage device decrypts data stored in the non-volatile memory using the bulk encryption key.

    摘要翻译: 数据存储设备使用批量加密密钥对存储在非易失性存储器中的数据进行加密。 数据存储装置使用密钥导出函数来生成初始加密密钥。 然后,数据存储设备将具有初始加密密钥的中间加密密钥包裹起来,并将包裹的中间密钥存储在非易失性存储器中。 数据存储设备将批量加密密钥与中间加密密钥打包,并将包装的批量加密密钥存储在非易失性存储器中。 数据存储设备可以使用初始加密密钥解包包裹的中间密钥以产生中间加密密钥。 数据存储设备可以使用中间加密密钥解开包装的批量加密密钥以生成批量加密密钥。 数据存储装置使用批量加密密钥对存储在非易失性存储器中的数据进行解密。

    Distributed field self-test for shingled magnetic recording drives
    6.
    发明授权
    Distributed field self-test for shingled magnetic recording drives 有权
    用于带状磁记录驱动器的分布式现场自检

    公开(公告)号:US08599507B2

    公开(公告)日:2013-12-03

    申请号:US13312979

    申请日:2011-12-06

    IPC分类号: G11B27/36 G11B5/09

    CPC分类号: G11B27/36 G11B2220/2516

    摘要: A method is described for allowing disk drives, such as shingle-written magnetic recording (SMR) drives, to be shipped for customer use with portions of the magnetic media being left untested. The testing is then completed by the drive self-testing in the field. The drive is made functional at the factory by fully testing at least one operational set of regions including an I-region, an E-region and a write cache region. The operational set of regions works as a separate self-contained virtual disk drive and can be used immediately. The remaining untested areas on the media can be tested in the field by a background task and/or when the first write command is received that requires a new track or operational set of regions (on-the fly testing).

    摘要翻译: 描述了一种用于允许磁盘驱动器(例如瓦楞纸磁性记录(SMR)驱动器)被运送以供客户使用的方法,部分磁性介质未被测试。 然后通过本领域的驱动自检来完成测试。 通过完全测试至少一个可操作的I区域,E区域和写入缓存区域的区域,驱动器在工厂生效。 区域的操作集合作为独立的独立虚拟磁盘驱动器,可以立即使用。 可以通过后台任务和/或当接收到需要新的轨迹或操作的一组区域(即时测试)的第一个写入命令时,媒体上剩余的未测试区域可以在现场进行测试。

    Distributed Field Self-test for Shingled Magnetic Recording Drives
    7.
    发明申请
    Distributed Field Self-test for Shingled Magnetic Recording Drives 有权
    带状磁记录驱动器的分布式现场自检

    公开(公告)号:US20130142024A1

    公开(公告)日:2013-06-06

    申请号:US13312979

    申请日:2011-12-06

    IPC分类号: G11B27/36

    CPC分类号: G11B27/36 G11B2220/2516

    摘要: A method is described for allowing disk drives, such as shingle-written magnetic recording (SMR) drives, to be shipped for customer use with portions of the magnetic media being left untested. The testing is then completed by the drive self-testing in the field. The drive is made functional at the factory by fully testing at least one operational set of regions including an I-region, an E-region and a write cache region. The operational set of regions works as a separate self-contained virtual disk drive and can be used immediately. The remaining untested areas on the media can be tested in the field by a background task and/or when the first write command is received that requires a new track or operational set of regions (on-the fly testing).

    摘要翻译: 描述了一种用于允许磁盘驱动器(例如瓦楞纸磁性记录(SMR)驱动器)被运送以供客户使用的方法,部分磁性介质未被测试。 然后通过本领域的驱动自检来完成测试。 通过完全测试至少一个可操作的I区域,E区域和写入缓存区域的区域,驱动器在工厂生效。 区域的操作集合作为独立的独立虚拟磁盘驱动器,可以立即使用。 可以通过后台任务和/或当接收到需要新的轨迹或操作的一组区域(即时测试)的第一个写入命令时,媒体上剩余的未测试区域可以在现场进行测试。

    Techniques for implementing virtual storage devices
    8.
    发明授权
    Techniques for implementing virtual storage devices 有权
    实现虚拟存储设备的技术

    公开(公告)号:US07886115B2

    公开(公告)日:2011-02-08

    申请号:US11777850

    申请日:2007-07-13

    IPC分类号: G06F12/00

    摘要: Some embodiments include a storage device with a storage medium having a memory capacity. The storage device also includes virtual storage device firmware that is configured to directly respond to commands from a guest operating system in a virtual machine for accesses to a subset of the memory capacity of the storage medium when a virtual storage device is enabled.

    摘要翻译: 一些实施例包括具有存储容量的存储介质的存储设备。 存储设备还包括虚拟存储设备固件,其被配置为在虚拟机中直接响应来自客户操作系统的命令,以便在启用虚拟存储设备时访问存储介质的存储器容量的子集。

    Disk drive with cache having volatile and nonvolatile memory
    9.
    发明授权
    Disk drive with cache having volatile and nonvolatile memory 有权
    具有缓存的磁盘驱动器具有易失性和非易失性存储器

    公开(公告)号:US07568068B2

    公开(公告)日:2009-07-28

    申请号:US11559346

    申请日:2006-11-13

    IPC分类号: G06F12/00 G06F13/00 G06F13/28

    摘要: A disk drive that includes nonvolatile memory for use when the disk drive is in standby mode also uses the nonvolatile memory, together with a volatile memory, as a cache when the disk drive is in both standby and non-standby mode. Each of the data blocks stored on the disks is also stored in a cache line of either the volatile memory or the nonvolatile memory. Each cache line in both the volatile and nonvolatile memory stores one or more data blocks and an associated tag. The tag contains at least a portion of the logical block address that corresponds to the data block that is stored in the cache line. The volatile memory also has locations allocated to store tags that “shadow” the tags in the nonvolatile memory. By searching the shadow tags in the faster volatile memory, it can be determined if a data block is in the nonvolatile memory without searching the slower nonvolatile memory.

    摘要翻译: 当磁盘驱动器处于待机模式时,包含用于磁盘驱动器处于待机模式的非易失性存储器的磁盘驱动器也将非易失性存储器与易失性存储器一起用作高速缓存。 存储在磁盘上的每个数据块也存储在易失性存储器或非易失性存储器的高速缓存行中。 易失性和非易失性存储器中的每个高速缓存线存储一个或多个数据块和相关联的标签。 标签包含对应于存储在高速缓存行中的数据块的逻辑块地址的至少一部分。 易失性存储器还具有分配用于存储“阴影”非易失性存储器中的标签的标签的位置。 通过在快速易失性存储器中搜索阴影标签,可以确定数据块是否在非易失性存储器中,而不需要搜索较慢的非易失性存储器。