Microsemi
Microsemi 2294900-R SmartRAID 3151-4i RAID controller
Low-profile RAID card adds four 12 Gb/s SAS/SATA ports via PCIe 3.0 x8 with 1 GB DDR4 cache and flash-backed protection
- Part2294900-R
- Form FactorMD2 - Low Profile
- TypeSATA / SAS
- Internal Connectors1 x SFF-8643 mini-SAS HD
- InterfacePCI-Express 3.0 x8
- Transfer RateUp to 12Gb/s
- 12 Gb/s transfer rate via PCIe 3.0 x8 interface
- 1 GB DDR4 cache at 2100 MHz with flash backup
- Four internal ports through one SFF-8643 connector
- Low-profile MD2 form factor fits 2.54 x 6.60 in slots
- Broad OS support including Windows, Linux, VMware and Solaris
Low-profile 12Gb/s RAID controller
The Microsemi SmartRAID 3151-4i is a low-profile MD2 adapter that adds four internal SAS or SATA ports through a single SFF-8643 mini-SAS HD connector. It targets server and workstation builders who need hardware RAID with 1GB of DDR4 cache backed by a tethered capacitor module.
PCIe 3.0 x8 interface limits
The card operates on a PCI-Express 3.0 x8 link, so peak throughput cannot exceed the bus ceiling of roughly 8GB/s regardless of the 12Gb/s SAS rating. Systems limited to PCIe 2.0 or fewer lanes will see proportionally lower bandwidth.
1GB cache and 12Gb/s headroom
The 1GB DDR4 cache at 2100MHz absorbs burst write traffic and enables maxCache 4.0 acceleration with solid-state drives. Four ports share the 12Gb/s aggregate limit, so heavy multi-drive workloads will saturate the controller before individual drives reach their rated speed.
Punti di forza
- 12 Gb/s transfer rate via PCIe 3.0 x8 interface
- 1 GB DDR4 cache at 2100 MHz with flash backup
- Four internal ports through one SFF-8643 connector
- Low-profile MD2 form factor fits 2.54 x 6.60 in slots
- Broad OS support including Windows, Linux, VMware and Solaris
Caratteristiche tecniche
| Brand | Microsemi |
|---|---|
| Model | 3151-4i |
| Part | 2294900-R |
| Form Factor | MD2 - Low Profile |
| Type | SATA / SAS |
| Internal Connectors | 1 x SFF-8643 mini-SAS HD |
| Interface | PCI-Express 3.0 x8 |
| Transfer Rate | Up to 12Gb/s |
| Cache Memory | 1GB DDR4 / 2100 MHz |
| Operating Systems Supported | Microsoft Windows Red Hat Linux SUSE Linux Debian Linux Ubuntu Linux Solaris FreeBSD VMware ESXi Citrix XenServer |
| Dimensions | 2.54" x 6.60" (H x L) |
| Features | Ideal for enabling 12 Gbps storage capabilities in performance-hungry server and workstation platforms, without compromising proven Microsemi reliability Provides high I/O transaction and high bandwidth processing solutions that reduce energy consumption and maintenance costs Accelerates storage with up to 4GB of highspeed DRAM cache with integrated cache protection (SmartRAID 315x SKUs only) |
| Package Contents | SmartRAID 3151-4i adapter Additional low profile vented bracket |
| Peso di spedizione | 0.91 kg |
| Dimensioni del pacco | 381 × 267 × 38 mm |
Domande su questo articolo
Should I choose the 3151-4i or the 3154-8i8e model for my server?
The 3151-4i provides four internal ports via one SFF-8643 connector on a PCIe 3.0 x8 interface, while the 3154-8i8e offers additional external connectivity not present on this adapter.
What does the 12Gb/s transfer rate deliver inside a live system?
Each attached SAS or SATA drive can run at up to 12Gb/s, giving high bandwidth and IOPS when paired with 12Gb/s SSDs and the onboard 1GB DDR4 cache running at 2100 MHz.
How does the PCIe 3.0 x8 interface limit real-world throughput?
The x8 Gen 3 link caps total controller throughput at roughly 64Gb/s, so the four 12Gb/s ports can operate simultaneously without saturating the bus.
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