Category: Storage

Best SSD Buying Guide: NVMe, M.2, PCIe, SATA and SAS

What is the best solid state drive on the market? What is the fastest SSD? What is the best buy SSD? We answer these complex questions this buying guide.

Solid state drives (SSDs) are now available in multiple form factors, capacities, speeds, functions and price ranges. Smaller PCIe and M.2. form factors that can move the power of flash closer to the CPU.

 

Source: Best SSD Buying Guide: NVMe, M2, PCIe, SATA and SAS

Understanding SCSI

  • Small computer systems interface.
  • Upto 16 devices can be daisy chained.
  • Fast SCSI, Ultra SCSI, Ultra Wide SCSI, Ultra2 SCSI,Ultra3 SCSI, Ultra-320 SCSI, Ultra-640 SCSI, iSCSI.
  • Narrow bus(8 devices) vs Wide Bus (16 devices).
  • Requires end device termination.
  • Each SCSI device in a single bus contains unique SCSI ID.
  • Logical Unit Number(LUN) assigned to seperate drives under a storage array.