IBM IC35L020 Hard Drive Specifications - Page 102

Host Protected Area Function, 9.1 Example for operation in LBA mode

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Command Standby Standby Immediate Write Buffer Write DMA (w/o retry) Write DMA (w/retry) Write DMA Queued Write Long (w/o retry) Write Long (w/retry) Write Multiple Write Sector(s) (w/o retry) Write Sector(s) (w/retry) Write Verify Locked Mode Executable Executable Executable Command aborted Command aborted Command aborted Command aborted Command aborted Command aborted Command aborted Command aborted Command aborted Figure 73. Command table for device lock operation (2 of 2) Unlocked Mode Executable Executable Executable Executable Executable Executable Executable Executable Executable Executable Executable Executable Frozen Mode Executable Executable Executable Executable Executable Executable Executable Executable Executable Executable Executable Executable 13.9 Host Protected Area Function The Host Protected Area Function provides a "protected area" which cannot be accessed using conventional methods. This "protected area" is used to contain critical system data such as BIOS or system management information. The contents of the main memory of the entire system may also be dumped into the "protected area" to resume after system power off. The LBA/CYL changed by following command affects the Identify Device Information. The following set of commands are implemented for this function. Read Native Max Address ('F8'h) Set Max Address ('F9'h) 13.9.1 Example for operation (in LBA mode) Assumptions: For better understanding the following example uses actual values such as LBA and size. Since it is just an example, the values may be different. Device characteristics Capacity (native) Maximum LBA (native) Required size for protected area Required blocks for protected area Customer usable device size Customer usable sector count LBA range for protected area 6,498,680,832 byte (6.4GB) 12,692,735 (C1ACFFh) 206,438,400 byte 403,200 (062700h) 6,292,242,432 byte (6.2GB) 12,289,536 (BB8600h) BB8600h to C1ACFFh 1. Shipping of drives from the manufacturer Prior to being shipped from the manufacturer each drive has been tested to have a usable capacity of 6.4 GB besides flagged media defects not visible by system. 2. Preparation of drives by the system manufacturer Special utility software is required to define the size of the protected area and to store the data into it. The sequence is as follows: Deskstar 60 GXP Hard disk drive specification 88

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Executable
Executable
Command aborted
Write Verify
Executable
Executable
Command aborted
Write Sector(s) (w/retry)
Executable
Executable
Command aborted
Write Sector(s) (w/o retry)
Executable
Executable
Command aborted
Write Multiple
Executable
Executable
Command aborted
Write Long (w/retry)
Executable
Executable
Command aborted
Write Long (w/o retry)
Executable
Executable
Command aborted
Write DMA Queued
Executable
Executable
Command aborted
Write DMA (w/retry)
Executable
Executable
Command aborted
Write DMA (w/o retry)
Executable
Executable
Executable
Write Buffer
Executable
Executable
Executable
Standby Immediate
Executable
Executable
Executable
Standby
Frozen Mode
Unlocked Mode
Locked Mode
Command
Figure 73. Command table for device lock operation (2 of 2)
13.9
Host Protected Area Function
The Host Protected Area Function provides a "protected area" which cannot be accessed using
conventional methods. This "protected area" is used to contain critical system data such as BIOS or
system management information. The contents of the main memory of the entire system may also be
dumped into the
"protected area" to resume after system power off.
The LBA/CYL changed by following command affects the Identify Device Information.
The following set of commands are implemented for this function.
Read Native Max Address
('F8'h)
Set Max Address
('F9'h)
13.9.1 Example for operation (in LBA mode)
Assumptions: For better understanding the following example uses actual values such as LBA and size.
Since it is just an example, the values may be different.
Device characteristics
BB8600h to C1ACFFh
LBA range for protected area
12,289,536 (BB8600h)
Customer usable sector count
6,292,242,432 byte (6.2GB)
Customer usable device size
403,200 (062700h)
Required blocks for
protected area
206,438,400 byte
Required size for protected
area
12,692,735 (C1ACFFh)
Maximum LBA (native)
6,498,680,832 byte (6.4GB)
Capacity (native)
1. Shipping of drives from the manufacturer
Prior to being shipped from the manufacturer each drive has been tested to have a usable capacity of
6.4 GB besides flagged media defects not visible by system.
2. Preparation of drives by the system manufacturer
Special utility software is required to define the size of the protected area and to store the data into it. The
sequence is as follows:
Deskstar
60 GXP Hard disk drive specification
88