H13-611_V4.5 Exam Dumps - HCIA-Storage V4.5

The statements that describe the high reliability of the Huawei OceanStor all-flash storage system are A. It supports clusters consisting of multiple controller enclosures to improve the availability of the storage system, B. Interconnect I/O modules shorten failover time when a controller fails to provide better reliability, as compared with common I/O modules, and D. When a controller fails, l/Os of the faulty controller are redirected to another controller The host is unaware of the fault and services remain running properly. Statement C. Standard I/O modules shorten failover time when a controller fails to provide better reliability, as compared with interconnect I/O modules is false.

If a disk is faulty, the process of recovering data on the faulty disk is typically done through a process called reconstruction. Reconstruction involves copying data from a healthy disk in a RAID array to the faulty disk. This can be done through software or hardware RAID controllers. The RAID controller will use the data stored on the other disks in the RAID set to recreate the data that was stored on the faulty disk. This process can be done while the RAID array is online, allowing the RAID to continue functioning while the reconstruction process is taking place. Once the reconstruction is complete, the faulty disk can be replaced and the RAID array can continue to function normally.

IP SAN and FC SAN are different types of storage area networks (SANs) that use different protocols for data transmission.

IP SAN uses the iSCSI protocol for data transmission. It is a block-level protocol that allows data to be transferred over IP networks and it allows to connect hosts and storage systems over long distances using standard Ethernet networks.

FC SAN uses the Fibre Channel (FC) protocol for data transmission. It is a dedicated protocol that uses a dedicated cabling and a specialized switch infrastructure to connect hosts and storage systems.

Both IP SAN and FC SAN encapsulate the SCSI command with their underlying protocol before transmission, but they cannot connect to each other without additional protocols such as Fibre Channel over IP (FCIP) or Internet SCSI (iSCSI) which are used to tunnel Fibre Channel or iSCSI over an IP network.