Maxtor 4W030H2, Руководство по эксплуатации продукта

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PRODUCT DESCRIPTION
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Product Product Product Features
Features
Features Features Features
Functional / Interface Functional / Interface Functional / Interface Functional / Interface Functional / Interface
Maxtor hard drives contain all necessary mechanical and electronic parts to interpret control signals and
commands from an AT-compatible host computer. See Section 3 Product Specifications, for complete
drive specifications.
Zone Density Recording Zone Density Recording Zone Density Recording Zone Density Recording Zone Density Recording
The disk capacity is increased with bit density management – common with Zone Density Recording.
Each disk surface is divided into 16 circumferential zones. All tracks within a given zone contain a
constant number of data sectors. The number of data sectors per track varies in different zones; the
outermost zone contains the largest number of data sectors and the innermost contains the fewest.
Read / Write Multiple Mode Read / Write Multiple Mode Read / Write Multiple Mode Read / Write Multiple Mode Read / Write Multiple Mode
This mode is implemented per ANSI ATA/ATAPI-5 specification. Read/Write Multiple allows the
host to transfer a set number of sectors without an interrupt request between them, reducing transfer
process overhead and improving host performance.
UltraDMA - Mode 5 UltraDMA - Mode 5
UltraDMA - Mode 5 UltraDMA - Mode 5 UltraDMA - Mode 5
Maxtor hard drives fully comply with the new ANSI Ultra DMA protocol, which greatly improves
overall AT interface performance by significantly improving burst and sustained data throughput.
Multi-word DMA (EISA Type B) - Mode 2 Multi-word DMA (EISA Type B) - Mode 2
Multi-word DMA (EISA Type B) - Mode 2 Multi-word DMA (EISA Type B) - Mode 2 Multi-word DMA (EISA Type B) - Mode 2
Supports multi-word Direct Memory Access (DMA) EISA Type B mode transfers.
Sector Address Translation Sector Address Translation Sector Address Translation Sector Address Translation Sector Address Translation
All Maxtor hard drives feature a universal translate mode. In an AT/EISA-class system, the drive may
be configured to any specified combination of cylinders, heads and sectors (within the range of the
drive's formatted capacity). Maxtor hard drives power-up in a translate mode:
MOD ELS CYL H D SPT MAX L BA C APAC IT Y
4W1 00H6 19 4 158 16 63 19 5 711 264 10 0 GB
4W0 80H6 15 8 816 16 63 16 0 086 528 80 GB
4W0 60H4 119 150 16 63 12 0 103 200 60 GB
4W0 40H3 79 408 16 63 80 043 2 64 40 GB
4W0 30H2 59 554 16 63 60 030 4 32 30 GB
Logical Block Addressing Logical Block Addressing Logical Block Addressing Logical Block Addressing Logical Block Addressing
The Logical Block Address (LBA) mode can only be utilized in systems that support this form of translation.
The cylinder, head and sector geometry of the drive, as presented to the host, differs from the actual physical
geometry. The host AT computer may access a drive of set parameters: number of cylinders, heads and sectors
per track, plus cylinder, head and sector addresses. However, the drive can’t use these host parameters directly
because of zoned recording techniques. The drive translates the host parameters to a set of logical internal
addresses for data access.
The host drive geometry parameters are mapped into an LBA based on this formula:
LBA = (HSCA - 1) + HHDA x HSPT + HNHD x HSPT x HCYA (1)
= (HSCA - 1) + HSPT x (HHDA + HNHD x HCYA) (2)
where HSCA = Host Sector Address, HHDA = Host Head Address
HCYA = Host Cylinder Address, HNHD = Host Number of Heads
HSPT = Host Sectors per Track
The LBA is checked for violating the drive capacity. If it does not, the LBA is converted to physical drive
cylinder, head and sector values. The physical address is then used to access or store the data on the disk
and for other drive related operations.