Features
SSD capacity	480 GB
SSD form factor	3.5"
Interface	Serial ATA III
Memory type	V-NAND TLC
Component for	Server/workstation
Data transfer rate	6 Gbit/s
Read speed	480 MB/s
Write speed	320 MB/s
Random read (4KB)	81000 IOPS
Random write (4KB)	28000 IOPS
Uncorrectable Bit Error Rate (UBER)	< 1 per 10^17 bits read
Mean time between failures (MTBF)	2000000 h
Drive writes per day (DWPD)	1
Certification	UL TUV FCC CE Mark C-Tick Mark BSMI (Taiwan) KCC (Korea EMI)
NVMe
Hardware encryption
S.M.A.R.T. support
ECC
Hot-swap
H/W PLP function
Operational conditions
Operating temperature (T-T)	0 - 70 °C
Storage temperature (T-T)	-40 - 85 °C
Operating relative humidity (H-H)	5 - 95%
Operating shock	1500 G
Non-operating shock	20 G
Maximum operating altitude	3050 m
Other features
Sequential reading	480 MB/s
Sequential writing speed	460 MB/s
Sequential read/write
Weight & dimensions
Width	70 mm
Depth	100 mm
Height	7 mm

The Lenovo SSD with manufacturer number 4XB7A90879 is a 8,9 cm ( 3,5 inch ) disk drive with a storage capacity of 480 GB, specifically designed for use in servers and workstations. The device is based on V-NAND TLC memory chip technology and features a Serial ATA III interface, enabling a maximum data transfer rate of 6 Gbit/s. It is a Read Intensive model, optimized for applications with primarily read access, where write load is limited. The SSD is designed for use in professional IT environments where high reliability and continuous availability are required.

Applications
This drive is primarily intended for server and workstation systems, where it can be used as a primary or secondary storage resource. The Read Intensive design makes it particularly suitable for applications that involve frequent reading but infrequent writing, such as databases, web servers, or virtual machines. Support for Hot-Swap allows the drive to be replaced during operation, which is advantageous in high-availability environments.

Functions and Features in Detail
The SSD achieves a sequential read speed of 480 MB/s and a write speed of 320 MB/s, ensuring efficient data processing. For random access (4KB), the values are 81,000 IOPS for reading and 28,000 IOPS for writing, indicating good performance with small, fragmented data blocks. Hardware encryption provides high protection for sensitive data, with encryption performed directly within the drive and not dependent on the system level. S.M.A.R.T. support enables monitoring of the drive's condition to detect potential failures early.

Technology Explained Simply
The use of V-NAND TLC memory chip technology means that the memory cells are arranged in a vertical structure, enabling higher density and efficiency. TLC (Triple Level Cell) stores three bits per cell, resulting in higher capacity, although with fewer write cycles compared to MLC or SLC. Hardware encryption is performed via an integrated encryption chip that encrypts data during writing and decrypts it during reading, without requiring CPU or software involvement. The Hot-Swap function allows the drive to be replaced without restarting the system, which is important for critical applications. The H/W PLP function (Hardware Power Loss Protection) protects against data loss in case of sudden power failure by using an internal buffer to complete the last write operations.

Compatibility and Accessories
The drive is designed as a Vendor Agnostic SSD, meaning it is not bound to a specific server manufacturer and can therefore be used in various server platforms. Compatibility with servers and workstations is ensured by the standard SATA III interface and the 8,9 cm ( 3,5 inch ) form factor. It is suitable for use in rack servers and tower systems that have corresponding drive bays.

Mounting and Installation
Installation is performed in a 8,9 cm ( 3,5 inch ) drive bay, with physical dimensions (70 mm width, 100 mm depth, 7 mm height) matching the standard for this form factor. Mounting is done via integrated mounting holes, compatible with standard screws for 8,9 cm ( 3,5 inch ) drives. Power supply is provided via the standard SATA power connector, connected using the SATA power cable.

Operational Advantages
The SSD offers high reliability with an MTBF (Mean Time Between Failures) of 2,000,000 hours, indicating a long service life. The Uncorrectable Bit Error Rate (UBER) is < 1 per 10^17 bits read, ensuring data integrity. The operating temperature of 0 to 70 °C and storage temperature of -40 to 85 °C make the drive suitable for a wide range of environments. The shock resistance of 1500 G during operation and 20 G when not in operation ensures high mechanical robustness. The certifications UL, TUV, FCC, CE Mark, C-Tick Mark, BSMI (Taiwan), KCC (Korea EMI) confirm compliance with international safety and emission standards.