00AJ040 Lenovo S3500 80GB SATA 1.8in MLC Enterprise Value SSD

Lenovo part 00AJ040 is the S3500 80GB SATA 1.8" MLC Enterprise Value SSD for System x, feature code A4KV. It holds 80GB in a 1.8-inch form factor, supplied without a drive tray; Lenovo notes it can be hot-swap or non-hot-swap depending on the server.

The S3500 line uses Intel 20 nm MLC NAND behind a 6 Gbps SATA interface. Lenovo lists AES 256-bit encryption, full end-to-end data path protection, enhanced power loss data protection, thermal throttling and S.M.A.R.T. support, with typical power of 5 W per drive and an MTBF of 2,000,000 hours.

Lenovo's specification table gives 00AJ040 an endurance of 45 TB written, 70,000 read and 7,000 write IOPS on 4 KB blocks, and 340 MBps sequential read with 100 MBps sequential write on 128 KB blocks.

Enterprise Value drives trade write endurance for cost. Lenovo's worked example: the 240GB S3500 rated at 140 TB written must stay under 77 GB of writes per day to last five years, or 128 GB per day for three years. Past its TBW figure a drive eventually reaches end of life and switches to read-only mode.

Server support in the Lenovo guide: the x3650 M4 and x3650 M4 HD, the x3750 M4 (8722 and 8752), the x3690 X5 and x3850 X5/x3950 X5, and the dx360 M4 and nx360 M4 dense servers, plus Flex System x220, x222, x240, x240 M5 and x440 compute nodes and the HX5 blade. Lenovo's Configuration and Options Guide of 17 January 2017 also lists it for the x3750 M4 (8753), marked with an asterisk as withdrawn.

Fit check: 00AJ040 needs a 1.8-inch SSD or eXFlash bay in a listed server; check feature code A4KV on configuration records. Neighbouring options are 00AJ045 and 00AJ050.