00AJ005 Lenovo S3500 240GB SATA 2.5in MLC Enterprise Value SSD

Option 00AJ005, feature code A4KN, is the S3500 240GB SATA 2.5" MLC HS Enterprise Value SSD for System x. The drive is 240GB in the 2.5-inch format and ships mounted on a 2.5-inch hot-swap tray. In the Configuration and Options Guide its SBB is 00AJ007.

Inside is Intel 20 nm MLC flash on a 6 Gbps SATA link. The guide credits the drives with 256-bit AES encryption, end-to-end data path protection and enhanced protection against power loss, and gives 5 W typical power, 2,000,000 hours MTBF and fewer than 1 in 10^17 bits read as the data reliability figure.

Rated figures for this capacity: 140 TB total bytes written, 75,000 random read IOPS, 7,500 random write IOPS, 500 MBps sequential read and 260 MBps sequential write.

The guide explains that Enterprise Value and Enterprise SSDs read at similar IOPS but differ in endurance and write IOPS. TBW is the total data Lenovo rates the drive to write; after passing it, the drive reaches end of life at some point and goes read-only, so write volume should be planned against the rating.

Servers that list this drive in the Lenovo guide: the x3100 M4, x3250 M4, x3300 M4, x3500 M4, x3530 M4, x3550 M4, x3650 M4 and x3650 M4 HD, x3690 X5, x3750 M4 and x3850 X5/x3950 X5, plus BladeCenter HS22, HS23 and HS23E and Flex System x220, x240 and x440. Lenovo's Configuration and Options Guide of 17 January 2017 also lists it for the x3100 M5 (5457) and x3750 M4 (8753).

Fit check: the replacement must be a 2.5-inch hot-swap bay drive for a listed server; 00AJ005 carries feature code A4KN. Family members with pages: 00AJ000 and 00AJ015.