2778 IBM 9406 21P3735 PCI X RAID Disk Controller

2778 IBM 9406 21P3735 PCI X RAID Disk Controller

IBM ServeRAID / SAS RAID Controller — hardware RAID for IBM System x / Lenovo ThinkSystem SAS/SATA storage.

Specifications

• Part Number: 2778
• Brand: IBM
• Family: ServeRAID legacy (M5014/M5015/M5025/M5110/M5210/M5225) / post-Lenovo RAID 530/730/930
• Cache: See PN (None / 256MB / 512MB / 1GB / 2GB / 4GB / 8GB DDR3/4)
• RAID Levels: 0, 1, 5, 6, 10, 50, 60 (level support varies by model)
• Interface: PCIe Gen2/Gen3 x8 — see PN
• Form Factor: Standard PCIe adapter / on-board / mezzanine — see PN
• Cache Protection: BBU (Battery Backup Unit) or flash-backed M-series cache — battery PN sold separately

Compatibility

IBM ServeRAID is System x generation-paired by backplane connector + cache module + mezzanine slot. Post-2014 Lenovo-branded RAID adapters retain compatibility through the M5/V1 generation chassis.

• ServeRAID M5014/M5015 (Gen2 8i/8e): System x M2/M3/M4 — 6Gb SAS
• ServeRAID M5025 (Gen3 16e external): external storage shelf attach
• ServeRAID M5110 (Gen3 8i internal): System x M4 — 6Gb SAS with FastPath/MegaRAID
• ServeRAID M5210/M5225 (Gen3 12Gb 8i/16e): System x M5 — 12Gb SAS
• Lenovo RAID 530/730/930 (post-2014): ThinkSystem SR — see Lenovo RAID compatibility

Use Cases

Hardware RAID for legacy System x boot/data tier. ServeRAID FastPath for read-cache acceleration on read-heavy workloads. BBU/flash-backed write cache for DB2/Oracle/MS SQL transaction-log integrity during power loss. Online RAID-level migration + hot-spare on supported models.

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