Huawei OceanStor S2600 Command Reference Manual page 272

B Glossary
Write-back cache
Write-back cache
mirroring
Write-through
cache
B-12
A cache technology. When the write operation is completed, the data
continues to be stored in the cache and therefore, the operation of writing
the data to disks will be delayed. No need to access disks during each
write operation.
A cache technology. Data is written to the local cache and at the same
time written to the opposite cache.
A cache technology. Data is written to disks. And only when the data
is safely written to disks, the procedure of write requests can be ended.
Disks need to be accessed during each write operation.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
OceanStor S2600 Storage System
Command Reference
Issue 07 (2010-05-20)