IBM ServeRAID M5100 Series 512MB Flash RAID 5 Upgrade (46C9027) is a flash-backed cache upgrade designed for IBM ServeRAID M5016/M5100 Series RAID controllers. It provides 512MB of flash-backed cache capacity to support RAID 5 functionality and improve storage controller performance and data protection. IBM's official service-parts documentation identifies 46C9027 specifically as the ServeRAID M5100 Series 512 MB Flash (RAID 5 upgrade), while 81Y4485 is the separate 512MB cache upgrade.
- Part Number: 46C9027
- Manufacturer: IBM
- Product Type: RAID Controller Flash / Cache Upgrade
- Product Family: ServeRAID M5100 Series
- Flash Capacity: 512MB
- Function: RAID 5 Upgrade
- Memory Type: Flash Memory
- Application: Enterprise Server RAID / Storage Controller
- Compatible Controllers: IBM ServeRAID M5016 / M5100 Series
- Compatible Systems: IBM System x servers supporting ServeRAID M5100 Series controllers, including System x3500 M4 and x3650 M4 configurations
- Installation: ServeRAID controller upgrade module
- Related 512MB Cache Part: 81Y4485
- Related 1GB Flash Upgrade: 46C9029
- Condition: OEM Replacement Part
