IBM System x3650 M4 25Backplanes and enablement kitsAll standard models, except models C4x and C5x, ship with eight 2.5" Slim-SFF SAS/SATA hot-swaphard drive bays. Models C4x and C5x ship with six 3.5" SAS/SATA hot-swap hard drive bays.The following table shows the internal storage expansion options that are available for x3650 M4 server.Table 7. Internal storage expansion options (Part 1)PartnumberFeaturecodeName and description Maximumsupported6 Gb SAS/SATA69Y5319 A1JY x3650 M4 Plus 8x 2.5" HS HDD Assembly Kit with ExpanderFor models with eight 2.5-inch hot-swap bays, adds eight more bays for atotal of 16 2.5-inch hot-swap HDD bays.This option includes a SAS expander card that is mounted on an HDDbackplane, and it does not consume a PCIe slot.Includes internal cables.100D9490 A39W x3650 M4 Plus 8 2.5" HS HDD Assembly Option KitFor models with eight 2.5-inch hot-swap bays, adds eight more bays for atotal of 16 2.5-inch hot-swap HDD bays.Does not include a SAS expander.Requires a second RAID adapter for the second set of eight drives.Includes internal cables.100D9493 A39Z x3650 M4 8 2.5" Plus 16 1.8" SSD Assembly Option KitFor models with eight 2.5-inch hot-swap bays, adds 16 1.8-inch SSDbays for a total of 24 bays.Requires two SSD controllers for the 16 SSDs.Includes internal cables.1None* A39X x3650 M4 Hot-Swap 16/32 HDD Assembly KitFor CTO only. First set of 16 1.8-inch SSD bays.100D9492 A39Y x3650 M4 16 Plus 16 1.8" SSD Assembly Option KitFor CTO only. Second set of 16 1.8-inch SSD bays.Use with feature A39X to configure a total of 32 1.8-inch SSD bays.1None* A3A0 x3650 M4 2.5" Simple Swap KitFor CTO onlySupports eight simple-swap drivesNo support for 16 simple-swap drives169Y5320 A1L6 x3650 M4 Tape Enablement KitAdds support for an internal tape drive (DDS5, DDS6, or RDX).This option includes two USB cables (one for DDS tape and one for RDXtape).The tape drive is ordered separately.1