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Zorluk: OrtaStorage Devices and Interfaces

Match each storage drive interface or form factor standard with its primary physical or operational specification.

  • U.2 (SFF-8639)2.5-inch enterprise form factor interface utilizing four PCIe lanes to provide hot-swappable NVMe connectivity.
  • SAS (Serial Attached SCSI)High-density enterprise server drive standard supporting dual-port connectivity and compatibility with SATA drives on backplanes.
  • eSATAExternal storage connection standard limited to 6 Gbps transfer rates that requires a separate power source for connected drives.
  • NVMe over M.2 (M-Key)Compact internal expansion card slot standard supporting up to four PCIe lanes directly bypassing SATA controller overhead.

Cevap

U.2 matches with the 2.5-inch enterprise form factor interface utilizing four PCIe lanes; SAS matches with the high-density enterprise server drive standard supporting dual-port connectivity; eSATA matches with the external storage connection standard limited to 6 Gbps requiring separate power; NVMe over M.2 (M-Key) matches with the compact internal expansion card slot supporting up to four PCIe lanes.
Each interface standard is matched accurately based on physical form factor, bus capability, pin keying, and enterprise features: U.2 connects 2.5-inch PCIe NVMe drives; SAS offers enterprise features like dual-porting; eSATA offers external 6 Gbps connectivity without inline power; and M.2 M-key handles up to four PCIe lanes for internal SSDs.

Adım Adım Çözüm

1
Identify the enterprise 2.5-inch NVMe drive interface standard
Recognize that U.2 (SFF-8639) provides hot-swappable 2.5-inch PCIe NVMe functionality.
U.2 was introduced specifically to bring x4 PCIe lane performance to standard 2.5-inch drive enclosure bays.
2
Evaluate enterprise point-to-point serial storage features
Associate SAS with dual-porting capabilities and backplane SATA drive compatibility.
SAS host controllers can accept SATA drives, whereas SAS drives require SAS controllers due to dual-port signaling provisions.
3
Assess external storage bus constraints
Identify eSATA as an external 6 Gbps bus standard lacking integrated power lines.
Standard eSATA cables transmit signal data only, requiring an external power supply or power brick for the drive.
4
Determine M.2 keying and bus lane allocation
Pair M.2 M-Key with 4-lane PCIe NVMe internal expansion storage.
M-keying allows 4 PCIe lanes (PCIe x4) for max throughput client solid-state drives.

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