Z4A2321 Memtech, Z4A2321 Datasheet - Page 26

• Manufacturer Part Number: Z4A2321
• Description: Solid State Drives - SSD 32GB DRIVE IND TEMP
• Manufacturer: Memtech

Specifications of Z4A2321

• Product Category: Solid State Drives - SSD
• Product: SATA Flash Drives
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C

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ATA (IDE) Bus Modes
Zeus SSDs support the following ATA operating modes:
Endurance
The useful life of flash media is limited by the number of write/erase operations that can be performed
on the media. To extend the useful life of the SSD, special wear-leveling and bad-block mapping
algorithms are integrated in the firmware.
Wear-Leveling
The dynamic wear-leveling algorithm integrated in the firmware guarantees that erase/write cycles
are evenly distributed across all of the flash memory block locations. Wear-leveling eliminates
repeated writes to the same physical flash memory location, thereby preventing blocks from
premature wear.
Bad-Block Management
The bad-block mapping algorithm replaces bad blocks with new ones from available spares. Two
percent (2%) of the flash memory is held in reserve (spare block) for bad block replacement. Bad
blocks in the media are flagged when detected. The next time an attempt is made to access a flagged
block, it is immediately replaced by a spare block. The bad block mapping function enables data to
be automatically transferred from a bad sector to an available spare block.
Notes:
Data Retention
Data stored on a Zeus SSD will remain valid for ten (10) years without requiring power support. The
unit can be stored under certain environmental conditions for extended periods without any
occurrence of data degradation.
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STEC Inc. scans for bad blocks during the manufacturing process at the initial installation
of the flash components. Bad blocks are mapped and identified during the manufacturing
process.
The maximum amount of available user space will not be less than 97% of the total flash
capacity, i.e., the reserved space will not exceed more than 3% of the total drive volume
PIO Modes 0 - 4
DMA Modes 0 - 2
Ultra DMA Modes 0 - 5
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ERFORMANCE
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HARACTERISTICS
Zeus 2.5-Inch ATA Solid State Drive