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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

Atributo	Especificação
Modelo	Dell PERC 12 série, H965i Front Internal
Mode	Tri-Mode: SAS / Sata / NVMe (direct connect) in one controller
Internal ports	16 portas (front)
Interface	SAS4, 22.5/24 Gbps per lane-class
Cache	8 GB DDR4-3200, with battery backup unit (BBU) opção
Níveis de RAID	0, 1, 5, 6, 10, 50, 60; não RAID / HBA mode supported
Características	Migração de nível de RAID, hot spare, fast rebuild, self-encrypting drive support
Interface do host	PCIe Gen4
Compatibilidade	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 (Frente PERC H965i) e R670.

Dell PERC H965i PCIe RAID controller — MINUTO H965i: PCIe Gen4 tri-mode controller with 8GB cache – one card for SAS, SATA and NVMe.

RAID Levels and Operational Features

ATAQUE 0/1/5/6/10/50/60 covers performance and parity layouts; não RAID (HBA) mode passes disks through for software-defined storage.
Migração de nível de RAID 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

Servidor	Controller fit
R670 / R960 / R760	Frente PERC H965i (16-porta, modo triplo)
R7715	PERC H365i / H965i / H975i (per config)
External storage	Min H965E (external, with HBA355e/HBA465e options)

Pair the H965i with the Boss-N1 boot module to keep OS boot off the data controller entirely.

Buying FAQ

Does it handle NVMe? Sim – tri-mode covers SAS, SATA and NVMe direct-attach.
Cache protection? 8GB DDR4-3200 with BBU battery backup option.
Níveis de RAID? 0, 1, 5, 6, 10, 50, 60 plus non-RAID mode.
Portas? 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.

Dell PERC H965i front controller with battery backup unit — Front controller kit with battery backup unit (G1RWV): cache is safe through power loss.

Detalhe: on 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.