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🏢U.2 Enterprise SSD

Enterprise & Data CenterFra 3.000-5.000 kr

U.2 (tidligere SFF-8639) er enterprise-grade SSD form factor designet til servers og data centers. Med 2.5" form factor, hot-swap capability og op til 15mm tykkelse leverer U.2 drives massive endurance, høj performance og enterprise features som power loss protection.

Long Description

U.2 NVMe SSDs repræsenterer gold standard for enterprise storage. I modsætning til consumer M.2 drives tilbyder U.2 superior thermal management gennem større chassis, enterprise-grade components med extensive power loss protection, og hot-swap functionality kritisk for servers med 24/7 uptime requirements. U.2 drives bruges primært i data centers, high-performance computing, professional workstations og storage arrays hvor reliability og sustained performance er absolut kritisk. Form factoren tillader densere storage i rack-mounted servers sammenlignet med 3.5" drives, mens den leverer langt bedre cooling og endurance end M.2.

Interface

PCIe NVMe via U.2/SFF-8639 connector

Form Factor

2.5" (typisk 15mm tykkelse)

Speed Range

Read:3.000 - 7.400 MB/s
Write:2.000 - 6.800 MB/s
Iops:Op til 1.500.000+ IOPS random

Capacities

  • •800GB
  • •1.6TB
  • •3.2TB
  • •6.4TB
  • •7.68TB
  • •15.36TB
  • •30.72TB

Advantages

  • •Enterprise-grade reliability - 2-3 million timer MTBF
  • •Massive endurance ratings - typisk 1-10+ DWPD (Drive Writes Per Day)
  • •Power loss protection (PLP) - capacitor backup for in-flight writes
  • •Superior thermal management - større chassis = bedre cooling
  • •Hot-swap capability - skift drives uden at slukke server
  • •Consistent performance - ingen thermal throttling under sustained loads
  • •Advanced error correction (ECC) og data integrity features
  • •5-års warranties standard, nogle 7-10 år
  • •High queue depth performance - optimeret til server workloads
  • •Supports multi-stream og namespace features

Disadvantages

  • •Meget dyre - 3-5x prisen på consumer SSDs per GB
  • •Kræver dedikeret U.2 backplane eller adapter
  • •Overkill til consumer workloads - features du ikke behøver
  • •Typisk ikke tilgængelige i retail - OEM/distribution channels primært
  • •Større physical footprint end M.2
  • •Kun relevant for professional/enterprise use cases
  • •Requires proper server infrastructure

Use Cases

Name:Database Servers
Description:SQL, NoSQL og in-memory databases kræver høj IOPS, low latency og extreme reliability. U.2 drives leverer consistent performance 24/7.
Name:Virtualization Hosts
Description:VMware ESXi, Hyper-V, Proxmox - multiple VMs på én server kræver high queue depth performance og reliability. U.2 excellent til datastore.
Name:Storage Arrays
Description:Enterprise NAS og SAN systemer bruger U.2 drives for high-density storage med enterprise features som power loss protection.
Name:High-Frequency Trading
Description:Financial trading systems hvor microsekunder matters - U.2's low latency og consistency er kritisk.
Name:Content Delivery Networks
Description:CDN edge servers serving massive amounts of content - U.2 drives tilbyder capacity og sustained read performance.
Name:Professional Workstations
Description:Hollywood rendering farms, scientific computing, AI/ML training workstations - når downtime ikke er en option.

Popular Models

Name:Samsung PM9A3
Capacity:960GB - 15.36TB
Speed:Op til 6.900 MB/s læsning
Price:Fra 5.000 kr (1.92TB)
Features:PCIe 4.0, V-NAND TLC, 1 DWPD rating, power loss protection, 5-års garanti. Samsung's mainstream enterprise drive.
Website:https://semiconductor.samsung.com/ssd/datacenter-ssd/pm9a3/ →
Name:Intel D7-P5520
Capacity:1.6TB - 15.36TB
Speed:Op til 7.000 MB/s læsning
Price:Fra 6.000 kr (1.6TB)
Features:PCIe 4.0, Intel 144-layer TLC NAND, 1 DWPD, excellent consistency. Data center workhorse.
Website:https://www.intel.com/content/www/us/en/products/sku/212988/intel-ssd-d7p5520-series-1-6tb-2-5in-pcie-4-0-x4-3d4-tlc/specifications.html →
Name:Micron 7450 PRO
Capacity:960GB - 15.36TB
Speed:Op til 7.000 MB/s læsning
Price:Fra 5.500 kr (1.92TB)
Features:PCIe 4.0, Micron 176-layer TLC, 1-3 DWPD options, adaptive thermal protection, 5-års garanti.
Website:https://www.micron.com/products/ssd/product-lines/7450 →
Name:Kioxia CM6
Capacity:800GB - 30.72TB
Speed:Op til 6.900 MB/s læsning
Price:Fra 4.500 kr (960GB)
Features:PCIe 4.0, BiCS FLASH TLC, mixed-use 3 DWPD rating, excellent value. Toshiba legacy.
Website:https://business.kioxia.com/en-us/ssd/enterprise-ssd/cm6.html →
Name:Western Digital Ultrastar DC SN840
Capacity:800GB - 15.36TB
Speed:Op til 3.500 MB/s læsning (Gen3)
Price:Fra 4.000 kr (1.6TB)
Features:PCIe 3.0, proven reliability, 1-3 DWPD options, 5-års garanti. Workhorse for mixed workloads.
Website:https://www.westerndigital.com/products/internal-drives/data-center-drives/ultrastar-dc-sn840-ssd →
Name:Samsung PM1733
Capacity:800GB - 15.36TB
Speed:Op til 6.800 MB/s læsning
Price:Fra 7.000 kr (1.92TB)
Features:PCIe 4.0, high endurance 3 DWPD, V-NAND MLC option, enterprise-grade. High-performance option.
Website:https://semiconductor.samsung.com/ssd/datacenter-ssd/pm1733/ →

Technical Specs

Connector:U.2 SFF-8639 68-pin
Protocol:NVMe 1.3, 1.4 eller 2.0
Interface:PCIe 3.0 x4 eller PCIe 4.0 x4
Form Factor:2.5" 15mm (også 7mm for visse modeller)
Power:Typisk 15-25W under load, <5W idle
Temperature:0°C til 70°C operating (nogle industrial til 85°C)
Endurance:1 DWPD (read-intensive) til 10+ DWPD (write-intensive)
Mtbf:2-3 million timer
Warranty:5 år standard på enterprise drives

Dwpd Explained

Title:Drive Writes Per Day (DWPD)
Explanation:DWPD angiver hvor mange gange du kan overskrive hele drive capacity per dag over warranty perioden.

Examples

  • →1 DWPD på 1.92TB drive = 1.92TB writes per dag i 5 år
  • →3 DWPD på samme drive = 5.76TB writes per dag
  • →Read-intensive: 0.5-1 DWPD (databases, web servers)
  • →Mixed-use: 1-3 DWPD (virtualization, general purpose)
  • →Write-intensive: 3-10+ DWPD (logging, cache, write-heavy workloads)
Note:Enterprise drives måles i DWPD i stedet for TBW fordi workload varierer

Power Loss Protection

What:Capacitor-backed power loss protection (PLP)
How It Works:Onboard capacitors holder strøm i millisekunder ved power loss, så controller kan flush in-flight writes til NAND.
Importance:Kritisk for data integrity i enterprise environments - forhindrer data corruption ved uventede power failures.
Note:Consumer SSDs mangler typisk PLP - enterprise requirement

Buying Guide

  • •U.2 drives kun relevant hvis du har enterprise server eller professional workstation
  • •Tjek DWPD rating - match til dit workload (read-intensive vs write-intensive)
  • •Samsung PM9A3 og Intel D7-P5520 er industry standards
  • •Micron 7450 excellent value option
  • •Kioxia CM6 hvis du skal have massive capacities (30TB+)
  • •Køb fra authorized distributors - undgå used enterprise drives fra eBay (unknown usage)
  • •Verificer at dit system har U.2 backplane eller køb U.2 til M.2 adapter
  • •Enterprise drives optimized for sustained loads - ikke burst performance

Vs Consumer S S Ds

Reliability:Enterprise: 2-3M timer MTBF vs Consumer: 1.5M timer
Endurance:Enterprise: 1-10 DWPD vs Consumer: 300-600 TBW total
Features:Enterprise: PLP, advanced ECC, telemetry vs Consumer: basic features
Performance:Enterprise: Consistent under load vs Consumer: burst med SLC cache
Price:Enterprise: 3-5x dyrere per GB
Warranty:Enterprise: 5-10 år vs Consumer: 3-5 år
Conclusion:Enterprise overkill til consumer use - men kritisk for business-critical applications

Compatibility

Servers:Dell PowerEdge, HP ProLiant, Supermicro servers med U.2 backplane
Workstations:HP Z-series, Dell Precision, Lenovo ThinkStation med U.2 support
Adapters:U.2 til PCIe x4/x8/x16 adapters available til consumer motherboards
Note:Check server/workstation specs - ikke alle support U.2 hot-swap

Maintenance

  • •Monitor S.M.A.R.T. data via vendor tools (Samsung MagicINFO, Intel DCT)
  • •Check wear indicators monthly - enterprise drives har extensive telemetry
  • •Firmware updates critical - vendors release updates for stability/performance
  • •Temperature monitoring - enterprise drives kan køre hotter end consumer
  • •Backup critical - selv enterprise drives kan fejle

Future Outlook

U.2 bliver gradvist erstattet af E1.S og E3.S form factors i moderne data centers (højere density). Men U.2 forbliver standard i existing infrastructure og vil være relevant i 5+ år endnu.

Notable Achievements

  • •Industry standard for enterprise NVMe siden 2016
  • •Tillader hot-swap i live servers - kritisk for uptime
  • •Intel Optane U.2 drives satte performance records
  • •Samsung PM1733 blandt de hurtigste enterprise drives
  • •Supports capacities op til 30TB+ single drive

When To Use

Køb U.2 drives KUN hvis du bygger/upgraderer enterprise server, storage array eller professional workstation hvor reliability og sustained performance er critical. For consumer gaming/content creation, stick til M.2 NVMe drives.