A Little History on Legacy Disks - SCSI and IDE format 3.5"
Capacity: 1 GB IDE
wide temp, -40 to +85C
Operating System- DOS, XP, NT, LInux, VXWorks, Novus. The OS has implications for a controllers wear leveling mathematics and file management. Testing OK in lab, failure in field.
Static vs. DynamicWear Leveling with different types of error correction.
Block Size Management - if data blocks are to small - there is a possibility for wear leveling failure.
Temperature - are all the compoents on the SSD Wide Temp? Were they tested in an enviromental chamber.
Housing - Metal vs. Plastic - issues with rugged testing
Power UP / Power Down - Cache issues with Data - what happen when and if. This is a typical issue rotating drives and drive failure.
MTBF - True MTBF True MTBF is usually around 15-29 years depending on environment. If wear leveling fails to initiate - then you have failure in several months.
Altitude - rotating drives commonly fail over 10,000 ft altitude.
SSD Controller incompatible with Popular Chips like NVidia. Specifications say - SATA II, reality - the SSD controller may not work with common server chips like NVidia.
Large Database Acceleration . If dealing with 300,000,000 small files, we have seen rotating disk farms "chatter" with 80%+ usage while searching for small files. Actual throughput at the rotating disk in one application was under 1 MB/sec. SSD's could increase this 3x, 8x depending on chipset, controller and software implementation.
Rotational Latency & Disk Fragementation - leads to slower actual transfer speed over time. Therefore, even a slower SSD Controller could be the test solution.
MTBF of 114 years for rotating disks is correct - based on 1000 drives, ignoring the no-start ones, 30 Degree C, no change, 25 % usage, replace every 5 years.
Interfaces - If you find out
IDE - DOS, IDE XP
IDE 2.5" has a 40 Pin connector with power in that connector.
IDE 3.5" has a 44 Pin connector with 4 power pins.
SCSI which block size 256, 512, 1024, ....
SCSI 50 Pin Narrow 8 bit , 68 Pin Wide SCSI 16 Bit
SCSI Termination
SATA I, SATA II,
FC - Typica SSD pricing is very high for FC.
Tomshardware Reference
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