The ThinkSystem S4520 Read Intensive SATA SSDs are advanced 6Gb SATA solid-state drives that use 144-layer Intel 3D NAND TLC Flash Memory technology to provide an affordable solution with industry leading performance. Additional Warranty Information: One-year, customer-replaceable unit (CRU) limited warranty Product Type: Solid State Drive Device Supported: Server Storage Capacity: 960 GB Product Type: Solid State Drive Compatibility: Lenovo ThinkSystem Servers: ST50 V2 (7D8K / 7D8J) Device Supported: Server Storage Capacity: 960 GB Hot Swappable: No Manufacturer Part Number: 4XB7A77456 Limited Warranty: 1 Year Drive Type: Internal Form Factor: 3.5 Drive Type: Internal Form Factor: 3.5 Manufacturer: Lenovo Group Limited Product Name: ThinkSystem ST50 V2 3.5 S4520 960GB Read Intensive SATA 6Gb NHS SSD Brand Name: Lenovo Product Series: S4520 Brand Name: Lenovo Height: 0.3 Width: 2.8 Depth: 3.9 Wireless LAN: No Encryption Standard: 256-bit AES Product Family: S4520 Drive Interface: SATA Drive Interface Standard: SATA/600 Endurance Type: Read Intensive Rugged: Yes Environmentally Friendly: Yes Environmental Certification: EU WEEE Environmental Certification: EU RoHS Wireless LAN: No Encryption Standard: 256-bit AES Maximum Read Transfer Rate: 550 MB/s Maximum Write Transfer Rate: 510 MB/s Drive Interface: SATA Drive Interface Standard: SATA/600 Random 4KB Read: 90000IOPS Random 4KB Write: 43000IOPS Endurance (DWPD): 3 Endurance (TBW): 5427.20 TB Endurance Type: Read Intensive Rugged: Yes