Device Overview
1.2 Device Specifications
1.2.1 Specifications summary
Table 1.1 shows the specifications of the disk drives.
Table 1.1 Specifications (1/2)
MHX2300BT MHX2250BT
Format Capacity (*1, *2) 300 GB 250 GB
Number of Sectors (User) 586,072,368 488,397,168
Bytes per Sector 512 bytes
Rotational Speed 4,200 rpm ± 1%
Average Latency 7.14 ms
Positioning time (read and seek)
• Minimum (Track-Track)
• Average
• Maximum (Full)
1.5 ms (typ.)
Read: 12 ms (typ.)
22 ms (typ.)
Start time 3.5 sec (typ.)
Interface Compliant with ATA/ATAPI-8, Serial ATA Revision 2.5 Gen1i
Data Transfer Rate (*2)
• To/From Media
• To/From Host
60.8MB/s Max.
1.5 Gbps (150 MB/s) (Gen1i)
Data Buffer Size (*3) 8 MB (8,388,608 bytes)
Physical Dimensions
(Height × Width × Depth)
12.5 mm × 100.0 mm × 70.0 mm (*4)
Weight 135 g (Max.)
*1: Capacity under the LBA mode.
*2: 1 GB is equal to 1,000,000,000 bytes and 1 MB is equal to 1,000,000 bytes.
*3: 1 MB is equal to 1,048,576 bytes.
*4: The value of Depth (=100.0 mm) does not include PCBA (Printed Circuit Board Assembly).
For details, see Section 3.1.
Table 1.1 lists the formatted capacity, number of logical cylinders, number of
heads, and number of sectors of every model for which the CHS mode has been
selected using the BIOS setup utility on the host.
1-4 C141-E254
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