Factors for selecting ssd solid state Disks

1. The master chip is the core of SSD and determines the performance and stability. Mainly include Intel, JMF, Samsung,
Indilloud, among which intel and Samsung are the leader, indilloud is the new expensive, and JMF is mainly oriented to low-end markets. 2. the cache chip assists the master chip in data processing to improve and stabilize performance. Some low-end products will save the cache dram chip for cost reasons. 3. NAND Flash chips mainly include Intel and Samsun. Most SSDS Use Samsung and Intel X18 x25.
The SSD series uses their own NAND Flash chips. 4. SLC or MLC? SLC is a single layer
Cell), high cost, small capacity, long life, fast read/write speed; MLC is multi-level
Cell), the cost is low, the capacity is large, the service life is short, and the read/write speed is slow. 5. Capacity: currently, the mainstream SSD products are 128/256 GB,
The 512/1024 GB product is also available. Capacity is often inversely proportional to performance. Although the read/write latency of SSD is small and addressing has nothing to do with the location, SSD with a small capacity still has a comparative advantage in performance. We recommend that you use multiple 128/256 GB Images
SSD to obtain a large capacity, rather than directly using a large capacity SSD. 6, interface and bandwidth SSD interface SATA, PCI-E, PATA,
USB, enterprise applications mainly consider PCI-E and Sata. In theory, the higher the interface bandwidth, the better, but the relevant components (bus, RAID card
Etc.). Otherwise, it may cause waste. 7. the built-in raid SSD is composed of multiple flash storage chips. data can be written to different chips at the same time according to the Strip size, which is equivalent to raid0 internally (if Distribution Verification is RAID5 ), this helps improve the degree of parallelism and aggregate I/O bandwidth. Because SSD does not have mechanical motion, addressing latency is negligible. Therefore, SSD with built-in raid should be advantageous for small image applications, which is different from SAS/SATA disks. 8. The write life varies according to SSD's claims, such as 100,000 or 1,000,000. In addition, balanced write, cache or channel quantity also affect SSD's service life. 9. iops is a key indicator for measuring a large number of small file I/O applications, that is, random read/write performance. SSD products generally do not provide such performance data and need to be tested and compared. 10. I/O bandwidth SSDS often provide I/O bandwidth, average and maximum read/write speeds.
MB/s. This indicator is of little significance to small image applications and can be used as an auxiliary evaluation indicator. At present, there are many SSD product manufacturers, such as Intel, ocz, bitmicro network, fusion-Io, runcore,
Photofast.