Characteristics of SSDs


A solid-state disk (SSD), sometimes called an electronic disk or solid-state disk, consists of a control unit and a solid-state storage unit. SSDs are the same as hard disk drives (HDDs) in the interface specifications, definitions, functionalities, usage, appearance, and size. What distinguishes SSDs from HDDs is that the SSDs do not use any mechanical components but use the NAND-based flash memory to write or erase blocks for data reads/writes.
Without the magnetic media or spindle motor as HDDs, SSDs show outstanding performance in I/O processing, power consumption, shockproof, and reliability.

Other related questions:
Introduction to RAID 2.0+ RAID 2.0+ is a brand-new RAID technology that implements two-layer virtualized management instead of the traditional fixed management. Based on underlying disk management that employs block virtualization (Virtual for Disk), RAID 2.0+ uses Smart-series efficiency improvement software to implement efficient resource management that features upper-layer virtualization (Virtual for Pool). For details, see RAID2.0+ Multimedia.

OceanStor 9000 V100R001C01 basic characteristics
OceanStor 9000 V100R001C01 has the following basic characteristics: CIFS/NFS/FTP sharing, high data reliability, high system security, permission control, unified namespace, flexible expansion, high-performance access, and centralized management.

OceanStor 9000 InfiniBand
OceanStor 9000 InfiniBand (IB) is a common storage networking mode. In IB networking mode, switches and cables are referred to as IB switches and IB cables. IB features high bandwidth (40 Gbit/s) and high speed and applies to high-performance computing (HPC) for astronomical surveys and gene sequencing. It is recommended that OceanStor 9000 IB cables for QSPF+ ports be 3 m-long common copper cables or 10 m-long IB integrated optical cables. Copper cables are recommended only for intra-cabinet installation. Optical cables must be used for cross-cabinet installation.

What are the features of SSDs for S5500T V1R5?
A solid state drive (SSD) comprises controlling unit and solid state unit. The SSD and the hard disk drive (HDD) have the same interface specifications, definition, functions, and using methods. They are also similar in the form factor and dimensions. The difference is that the SSD has no mechanical part. The SSD has NAND Flash as the storage medium and the data stored on it is accessed through being written and erased in blocks. The SSD has no mechanical latency caused by the disk media or driving motor as the HDD does; therefore, it has higher performance, lower power consumption, better shock-resistance ability, and better stability.

Are SSDs necessary for MQ nodes?
The Message Queue (MQ) service provides message queuing capabilities. In order to deliver high throughput, Solid State Drives (SSDs) must be installed on MQ nodes.

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