concept
Through virtualization technology, storage resources are integrated together to provide external services, while achieving data security, capacity improvement, performance improvement and other effects.
Storage resource integration object
Multiple sets of storage
Multiple hard drives
Multiple drive letters
Data security
Capacity increase
performance improvement
Objects and Implementation Technologies
Disk virtualization
Protect data security, increase capacity, and improve performance
technology
RAID technology
- RAID0 RAID1 RAID3 RAID5 RAID6 RAID10 RAID30 RAID50 RAID60
- RAID2.0
copy technology
Three copies are the main ones
erasure coding technology
N+M erasure code (N is the data bit, M is the check bit), the commonly used 4+2 erasure code
Storage system virtualization
scale-out: protect data security, increase capacity, and improve performance
scale-up: increase capacity and improve some performance
technology
scale-out
Computing resource virtualization (pooling), storage resource virtualization (pooling)
scale-up
Storage network virtualization
Improve capacity, improve performance, heterogeneity
technology
Via storage gateway (file system)
Host virtualization
Soft RAID: Increase single disk capacity and protect data security
Thin-Provisioning: Reduce costs
technology
Soft RAID
Thin-Provisioning
Disks mounted on the host can be over-allocated
resource planning
