Shingled magnetic recording disk drive with minimization of the effect of far track erasure on adjacent data bands
    1.
    发明授权
    Shingled magnetic recording disk drive with minimization of the effect of far track erasure on adjacent data bands 有权
    具有最小化远距离擦除对相邻数据带的影响的嵌入式磁记录磁盘驱动器

    公开(公告)号:US08537481B1

    公开(公告)日:2013-09-17

    申请号:US13423177

    申请日:2012-03-17

    IPC分类号: G11B27/36

    摘要: A shingled magnetic recording (SMR) hard disk drive (HDD) essentially eliminates the effect of far track erasure (FTE) in the boundary regions of annular data bands caused by writing in the boundary regions of adjacent annular data bands. The extent of the FTE effect is determined for each track within a range of tracks of the track being written. Based on the relative FTE effect for all the tracks in the range, a count increment (CI) table or a cumulative count increment (CCI) table is maintained for all the tracks in the range. For every writing to a track in a boundary region, a count for each track in an adjacent boundary region, or a cumulative count for the adjacent boundary region, is increased. When the count reaches a predetermined threshold the data is read from that band and rewritten to the same band.

    摘要翻译: 磁带录音(SMR)硬盘驱动器(HDD)基本上消除了在相邻环形数据频带的边界区域中写入引起的环形数据频带的边界区域中的远跟踪擦除(FTE)的影响。 对正在写入的轨道的轨道范围内的每个轨道确定FTE效果的程度。 基于该范围内所有轨道的相对FTE效应,对该范围内的所有轨道维持计数增量(CI)表或累积计数增量(CCI)表。 对于对边界区域中的轨迹的每次写入,相邻边界区域中的每个轨道的计数或相邻边界区域的累积计数增加。 当计数达到预定阈值时,从该频带读取数据并重写到相同的频带。

    SHINGLED MAGNETIC RECORDING DISK DRIVE WITH MINIMIZATION OF THE EFFECT OF FAR TRACK ERASURE ON ADJACENT DATA BANDS
    3.
    发明申请
    SHINGLED MAGNETIC RECORDING DISK DRIVE WITH MINIMIZATION OF THE EFFECT OF FAR TRACK ERASURE ON ADJACENT DATA BANDS 有权
    最小化跟踪擦除对相邻数据库的影响的摇摆磁记录盘驱动器

    公开(公告)号:US20130242426A1

    公开(公告)日:2013-09-19

    申请号:US13423177

    申请日:2012-03-17

    IPC分类号: G11B27/36

    摘要: A shingled magnetic recording (SMR) hard disk drive (HDD) essentially eliminates the effect of far track erasure (FTE) in the boundary regions of annular data bands caused by writing in the boundary regions of adjacent annular data bands. The extent of the FTE effect is determined for each track within a range of tracks of the track being written. Based on the relative FTE effect for all the tracks in the range, a count increment (CI) table or a cumulative count increment (CCI) table is maintained for all the tracks in the range. For every writing to a track in a boundary region, a count for each track in an adjacent boundary region, or a cumulative count for the adjacent boundary region, is increased. When the count reaches a predetermined threshold the data is read from that band and rewritten to the same band.

    摘要翻译: 磁带录音(SMR)硬盘驱动器(HDD)基本上消除了在相邻环形数据频带的边界区域中写入引起的环形数据频带的边界区域中的远跟踪擦除(FTE)的影响。 对正在写入的轨道的轨道范围内的每个轨道确定FTE效果的程度。 基于该范围内所有轨道的相对FTE效应,对该范围内的所有轨道维持计数增量(CI)表或累积计数增量(CCI)表。 对于对边界区域中的轨迹的每次写入,相邻边界区域中的每个轨道的计数或相邻边界区域的累积计数增加。 当计数达到预定阈值时,从该频带读取数据并重写到相同的频带。

    Shingled magnetic recording disk drive with compensation for the effect of far track erasure (FTE) on adjacent data bands
    5.
    发明授权
    Shingled magnetic recording disk drive with compensation for the effect of far track erasure (FTE) on adjacent data bands 有权
    带有磁带记录磁盘驱动器,可补偿相邻数据带上的远距离擦除(FTE)的影响

    公开(公告)号:US08593748B1

    公开(公告)日:2013-11-26

    申请号:US13487310

    申请日:2012-06-04

    IPC分类号: G11B27/36 G11B5/09 G11B19/04

    CPC分类号: G11B5/09 G11B19/045

    摘要: A shingled magnetic recording (SMR) disk drive has concentric shingled data tracks having data sectors with physical block addresses (PBAs), with the tracks being arranged in annular bands separated by annular inter-band gaps. The disk drive also has an on-disk extended cache region and may have writable inter-band cache (IBC) tracks in the inter-band gaps. A count is maintained in memory for each band and each IBC, and the count is incremented for each writing to a band or an IBC. When a count for a band or IBC reaches a predetermined threshold, the data is read from the tracks in the boundary region of the adjacent band that are within the range of the FTE and that data is then written to the extended cache. The FTE-affected tracks are then invalidated, meaning that PBAs can no longer be assigned to the data sectors in those tracks.

    摘要翻译: 具有带状磁记录(SMR)磁盘驱动器具有带有具有物理块地址(PBA)的数据扇区的同心带状数据轨道,轨道被布置在环形带间隔开的环形带中。 磁盘驱动器还具有磁盘扩展高速缓存区域,并且可能在带间隙中具有可写入的带间高速缓存(IBC)轨迹。 对于每个频带和每个IBC,在存储器中保持计数,并且对于每个写入频带或IBC,计数递增。 当频带或IBC的计数达到预定阈值时,从在FTE范围内的相邻频带的边界区域中的轨道读取数据,然后将数据写入扩展高速缓存。 然后,受FTE影响的轨道无效,这意味着PBA不能再分配给这些轨道中的数据扇区。

    SHINGLED MAGNETIC RECORDING DISK DRIVE WITH COMPENSATION FOR THE EFFECT OF FAR TRACK ERASURE (FTE) ON ADJACENT DATA BANDS
    6.
    发明申请
    SHINGLED MAGNETIC RECORDING DISK DRIVE WITH COMPENSATION FOR THE EFFECT OF FAR TRACK ERASURE (FTE) ON ADJACENT DATA BANDS 有权
    振动磁记录盘驱动器,用于补偿灰尘跟踪(FTE)对相邻数据库的影响

    公开(公告)号:US20130321948A1

    公开(公告)日:2013-12-05

    申请号:US13487310

    申请日:2012-06-04

    IPC分类号: G11B21/02

    CPC分类号: G11B5/09 G11B19/045

    摘要: A shingled magnetic recording (SMR) disk drive has concentric shingled data tracks having data sectors with physical block addresses (PBAs), with the tracks being arranged in annular bands separated by annular inter-band gaps. The disk drive also has an on-disk extended cache region and may have writable inter-band cache (IBC) tracks in the inter-band gaps. A count is maintained in memory for each band and each IBC, and the count is incremented for each writing to a band or an IBC. When a count for a band or IBC reaches a predetermined threshold, the data is read from the tracks in the boundary region of the adjacent band that are within the range of the FTE and that data is then written to the extended cache. The FTE-affected tracks are then invalidated, meaning that PBAs can no longer be assigned to the data sectors in those tracks.

    摘要翻译: 具有带状磁记录(SMR)磁盘驱动器具有带有具有物理块地址(PBA)的数据扇区的同心带状数据轨道,轨道被布置在环形带间隔开的环形带中。 磁盘驱动器还具有磁盘扩展高速缓存区域,并且可能在带间隙中具有可写入的带间高速缓存(IBC)轨迹。 对于每个频带和每个IBC,在存储器中保持计数,并且对于每个写入频带或IBC,计数递增。 当频带或IBC的计数达到预定阈值时,从在FTE范围内的相邻频带的边界区域中的轨道读取数据,然后将数据写入扩展高速缓存。 然后,受FTE影响的轨道无效,这意味着PBA不能再分配给这些轨道中的数据扇区。

    Method and apparatus for obtaining diagnostic data for a device attached to a computer system
    7.
    发明授权
    Method and apparatus for obtaining diagnostic data for a device attached to a computer system 有权
    用于获得连接到计算机系统的装置的诊断数据的方法和装置

    公开(公告)号:US07069479B2

    公开(公告)日:2006-06-27

    申请号:US10289969

    申请日:2002-11-07

    IPC分类号: G60F11/00

    CPC分类号: G06F11/3485 G06F11/3636

    摘要: A peripheral device (which is preferably a disk drive) can automatically collect trace data upon detecting certain error conditions. The peripheral device has the ability to selectively alter the range of state data collected in a trace depending on the error type. Preferably, the device includes a programmable processor executing a control program. A set of trace switches, each enabling a corresponding set of trace points, can be independently set by the control program. An error trace identification table identifies, for each error type, a corresponding set of trace switches. If an error is encountered, the trace switches corresponding to the error type are determined from the table, and the switches are set accordingly. In another invention aspect, a set of trap switches in the device can be set to trap on the occurrence of a specific error type, thereby supporting a more detailed error analysis.

    摘要翻译: 外围设备(其优选地是磁盘驱动器)可以在检测到某些错误条件时自动收集跟踪数据。 外围设备具有根据错误类型选择性地改变跟踪中收集的状态数据的范围的能力。 优选地,该设备包括执行控制程序的可编程处理器。 可以由控制程序独立设置一组跟踪开关,每个跟踪开关启用相应的一组跟踪点。 错误跟踪标识表为每个错误类型标识相应的一组跟踪开关。 如果遇到错误,则从表中确定对应于错误类型的跟踪开关,并相应地设置开关。 在另一个发明方面,设备中的一组陷阱开关可以被设置为捕获特定错误类型的发生,从而支持更详细的错误分析。

    Methods and apparatus for improving data integrity for small computer system interface (SCSI) devices
    10.
    发明授权
    Methods and apparatus for improving data integrity for small computer system interface (SCSI) devices 失效
    改进小型计算机系统接口(SCSI)设备数据完整性的方法和设备

    公开(公告)号:US07343430B2

    公开(公告)日:2008-03-11

    申请号:US10834451

    申请日:2004-04-29

    IPC分类号: G06F3/00

    CPC分类号: G06F13/423

    摘要: A SCSI ID of a SCSI initiator device that has won an arbitration is identified on a SCSI bus and stored in a register at a SCSI device. Subsequently, a SCSI ID of a selected SCSI target device which was selected by the SCSI initiator device is identified on the SCSI bus and compared with the SCSI ID in the register. If the SCSI ID of the selected SCSI target device and the SCSI ID stored in the register are different, a SCSI command from the SCSI initiator device is processed by the selected SCSI target device. If the SCSI ID of the selected SCSI target device and the SCSI ID stored in the register are the same, the selected SCSI target device refrains from processing the SCSI command from the SCSI initiator device.

    摘要翻译: 已经获得仲裁的SCSI启动器设备的SCSI ID在SCSI总线上标识并存储在SCSI设备的寄存器中。 随后,在SCSI总线上标识由SCSI启动器设备选择的所选SCSI目标设备的SCSI ID,并与寄存器中的SCSI ID进行比较。 如果所选SCSI目标设备的SCSI ID和寄存器中存储的SCSI ID不同,则SCSI启动器设备的SCSI命令由所选的SCSI目标设备进行处理。 如果所选SCSI目标设备的SCSI ID和存储在寄存器中的SCSI ID相同,则所选的SCSI目标设备将禁止从SCSI启动器设备处理SCSI命令。