In a large and medium-sized database application, files such as data, logs, and modification records are stored in the associated LUN1, LUN2, and LUN3 respectively, and remote replication tasks 1, 2, and 3 are created respectively, and the engineer copies these three remotely The task is added to the consistency group.
In this case, which of the following statements are correct? (Multiple choice)
The data capacity of site A is 2000GB, the data capacity of site B is 3000GB, and the data of site B is remotely copied to site A for storage, then the back-end storage capacity required by site A is (re-deletion ratio is 3):
Adjust the TCP parameters for LINUX clients accessing the Huawei Oceanstor 9000 cluster to improve access performance. Under a 10GE network, the size of the TCP receiving and sending buffer is recommended to be increased to the following value, net.ipv4.tcp_rmem='4000000 8000000 16000000' net.ipv4+tcp_wmem='4000000 8000000 16000000'
Parallel deduplication provides PB-level data backup to common disks. The processing speed and data capacity can increase linearly as the number of nodes in the deduplication grid grows.
As Huawei Oceanstor 9000 adopts centralized technology, Wushan distributed file system has no performance bottleneck. As the number of nodes increases, storage capacity and computing power increase linearly, and finally provide users with linearly increasing bandwidth and concurrency.
