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买 RAID 卡前先避开三个坑
坑一：”RAID 卡只管硬盘，管不了 NVMe。” 传统 RAID 卡只能接管 SAS/SATA；而现代服务器的引导盘、热数据盘全是 NVMe。Dell PERC H965i 是三模（Tri-Mode）控制器——同一块卡同时接管 SAS、SATA 和 NVMe 直连设备，一个控制器管住整台服务器的存储栈，不再需要为 NVMe 另买一张 HBA。
坑二：”缓存越大越好，别管掉电保护。” 没有掉电保护的缓存是数据炸弹：突然断电时缓存里的数据全部丢失。H965i 的 8GB DDR4-3200 缓存配套电池备份单元（BBU），断电时把缓存内容刷入闪存——缓存越大越需要这个保护，这也是它带 BBU 版本贵得有道理的原因。
坑三：”端口越多越专业。” 端口数要匹配盘位拓扑：16 个内部端口刚好覆盖 16-24 盘位机箱的 SAS/NVMe 直连，再多就是浪费。按服务器盘位选卡，不按广告数字选。
Core Specifications
| 属性 | 仕様 |
|---|---|
| モデル | Dell PERC 12 シリーズ, H965i Front Internal |
| Mode | Tri-Mode: SAS / SATA / NVMe (direct connect) in one controller |
| Internal ports | 16 ポート (フロント) |
| インタフェース | SAS4, 22.5/24 Gbps per lane-class |
| キャッシュ | 8 GB DDR4-3200, with battery backup unit (BBU) オプション |
| RAIDレベル | 0, 1, 5, 6, 10, 50, 60; 非 RAID / HBA mode supported |
| 特徴 | RAID レベルの移行, hot spare, fast rebuild, self-encrypting drive support |
| ホストインターフェース | PCIe Gen4 |
| 互換性 | PowerEdge R760 / R670 / R960 / R7715 and current rack family |
Why Tri-Mode Changes the Storage Stack
Before tri-mode, a database node typically needed a RAID controller for SAS drives plus an NVMe HBA or direct-attach slots for flash – two cards, two drivers, two failure domains. With the H965i, one card presents SAS/SATA arrays and NVMe devices to the OS, and the PERC firmware handles RAID on the SAS/SATA side while NVMe passes through at native latency. That is the exact architecture Dell validates in the PowerEdge R960 (フロント PERC H965i) と R670.
RAID Levels and Operational Features
- レイド 0/1/5/6/10/50/60 covers performance and parity layouts; 非 RAID (HBA) mode passes disks through for software-defined storage.
- RAID レベルの移行 lets you expand from RAID 1 to RAID 5/10 without rebuilding from scratch.
- Hot spare and fast rebuild cut rebuild windows on large arrays.
- Self-encrypting drive support keeps at-rest encryption on the drive layer.
- Battery backup flushes cached writes to flash on power loss – data-safe caching.
Which Card for Which Chassis
| サーバ | Controller fit |
|---|---|
| R670 / R960 / R760 | フロント PERC H965i (16-ポート, トライモード) |
| R7715 | PERC H365i / H965i / H975i (per config) |
| External storage | MIN H965e (external, with HBA355e/HBA465e options) |
Pair the H965i with the ボス-N1 boot module to keep OS boot off the data controller entirely.
Buying FAQ
- Does it handle NVMe? はい – tri-mode covers SAS, SATA and NVMe direct-attach.
- Cache protection? 8GB DDR4-3200 with BBU battery backup option.
- RAIDレベル? 0, 1, 5, 6, 10, 50, 60 plus non-RAID mode.
- ポート? 16 internal ports – sized for 16-24 bay chassis.
- Fits my server? Standard for current PowerEdge rack family (R760/R670/R960/R7715).
Upgrading or rebuilding storage? As an authorized Dell partner we supply PERC controllers, BOSS-N1 boot modules and compatibility-checked builds with factory-direct pricing, 3-year warranty and global shipping – contact us for a RAID configuration review.
Detail: の上 25+ bay or mixed SAS/NVMe builds, confirm port topology with our team – the 16-port H965i covers most rack layouts, and H965e handles external enclosures.
