A company purchased a Huawei hybrid flash device to run services on a virtualization platform. The host system uses Huawei multipath software and connects to the storage system’s two controllers via an Ethernet switch. The storage engineer found service interruptions and delays on the host. After inspection, they found active connections in the multipath software were being continuously switched. Uninstalling the multipath software can solve this problem while ensuring service reliability. Select one.

A company implements continuous data protection for important applications’ file systems. When rolling back a file system snapshot, the source file system’s shared mount must be canceled. Select one.

SCM is non-volatile memory, with access speed slightly slower than memory, and is a new type of NAND-like medium. Select one.

HyperCDP does not support direct mapping to the host. When data from a HyperCDP is needed, a snapshot copy of the HyperCDP can be created and mapped to the host. Select one.

iSCSI nodes directly transmit SCSI commands over a TCP/IP network. Select one.

All-flash storage (such as Huawei OceanStor) uses the SmartMatrix architecture, achieving front-to-back interconnection so that any controller failure does not affect business operations. Select one.

The active architecture of Huawei's massive storage system ensures load balancing for high-concurrency transaction services. Using this architecture, I/O is evenly distributed across all front-end ports for access load balancing.

In Huawei SSDs, operations to read and write data on NAND Flash primarily involve erasing, programming, and reading. The basic unit for programming and reading is a Block, and the basic unit for erasing is a Page. The number of times a Page can be erased is limited.

DAS storage network architecture must use additional switches and routers for setup.

The OceanStor Dorado V6 series controller enclosure has two power modules per enclosure, PSU 0 and PSU 1, forming a power plane with redundancy.

IP drifting supports drifting between different types of interface modules.

SmartTier automatically matches data with different levels of activity to different types of storage media dynamically.

In Huawei RAID 2.0+, Disk Group is an internal system object mainly used for fault isolation, configured automatically by the storage system and not exposed externally.

CIFS (Common Internet File System protocol) is a network-based sharing protocol that requires high reliability for network transmission, so it usually uses TCP/IP.

Huawei hybrid flash storage supports iSCSI, NFS, CIFS, FTP, and other mainstream storage network protocols. Select one:

Scale-up mainly uses the existing storage system, enhancing multiple nodes' capabilities by continuously adding storage components to meet data growth demands, i.e., expansion. Select one:

Huawei all-flash storage supports DTOE protocol offload technology, allowing IO to be sent directly from the network card to UserSpace for processing without passing through KernelSpace. Select one:

All vault disks in storage arrays have the function of storing dirty data when the system suddenly loses power. Select one:

In storage device performance indicators, latency refers to the time interval from initiating an IO request to completing the IO process. Select one:

During disaster recovery drills, services are switched to the disaster recovery site for operation. To demonstrate the reliability of the disaster recovery system, simulation testing methods should be used as much as possible to verify the business. Select one:

When reading and writing disks, the sector is the smallest addressable unit. Data can be written to the front half of a sector and then to another sector. Select one:

The OceanStor Dorado V6 series storage adopts self-developed chips for end-to-end interconnection, CPU processing, cluster switching, and back-end interconnection, providing low latency, high throughput, and stable high performance.

In terms of space allocation, Thick LUNs are allocated at once, while Thin LUNs are allocated on demand.

Images and music are considered unstructured data.

SmartCache acts as a write cache service module in the storage system, using SSDs to expand the RAM Cache by caching clean hotpot data that cannot be stored in the RAM Cache.

iSCSI nodes transmit SCSI commands directly over a TCP/IP network.

When using SmartThin technology, LUN space is not actually allocated during creation but allocated when space is needed.

All tracks on the same surface form a cylinder, usually called a cylinder. Each head on the cylinder is numbered from top to bottom, starting from "0". Data reading/writing is done by cylinder, starting from head "0" on the same cylinder. Once all heads on the same cylinder are read/written, the head moves to the next cylinder. However, an engineer believed that the host first sends a write request to a controller engine, which then writes the value directly to the engine’s local disk.

WORM (Write Once Read Many) is a feature where, after a file is written, it can be made read-only by removing full control permissions.

In Huawei all-flash storage systems, both ordinary LUNs and snapshots use the COW (Copy on Write) method. When new data is written by the host, the system reallocates space to store the new data and updates the LUN mapping table to point to the new data space.

In SmartMigration, consistency splitting refers to multiple pairs simultaneously exchanging LUN information and then breaking the pair relationship to ensure data consistency at each moment before and after splitting.

OceanStor Pacific uses DROS to manage block services, file services, and object services.

RAID technology has both software and hardware implementations, each with its own independent processor.

Block services provide a linked clone mechanism, supporting the creation of multiple snapshots from a clone volume. Each snapshot volume has the same data content as the clone volume when created. Subsequent modifications to the clone volume do not affect the original snapshot or other clone volumes.

Huawei OceanStor hybrid flash series integrates SAN and NAS resources.

Data generated and stored from the terminal to the storage device belongs to the data migration phase.

A customer has 1100GB of data and a backup window of 3 hours over a GE network. To meet the customer's needs, only LANFree networking can be chosen.

In the same storage pool, the storage tier is a collection of storage media with the same performance.

Information is unprocessed data, including content, relevance, and purpose.

SAS is a serial standard for the SCSI bus protocol.

All RAID types provide fault tolerance through mirroring technology.

When expanding a storage system, both capacity and the number of controllers can be increased simultaneously using Scale-Up.

RAID's mirroring data protection is superior to parity in terms of storage space utilization and data security.

In Huawei's distributed object service IO stack processing, after authentication, the OSC calls the iFogServer for EC calculation and concurrently writes to the iLog Client for persistence.

Integrated edge storage is mainly used in edge branch application scenarios, such as gas stations and power grids. Select one:

SmartThin does not pre-allocate all space but presents a capacity shape larger than the logical storage space to the user, making the visible storage space much larger than the system's actual allocated physical space. Select one:

The OceanStor Pacific series introduced the SmartInterworking feature, achieving file, object, and big data multi-protocol integration with seamless interoperability and performance without semantic loss, allowing multiple semantic accesses without format conversion. Select one:

Consistency splitting in SmartMigration refers to multiple pairs simultaneously exchanging LUN information and then simultaneously breaking the pair relationship to ensure data consistency before and after splitting. Select one:

When the host performs a write operation on a SmartThin LUN, if the space is not allocated in the Pool, space is first allocated from the Pool using the Capacity-on-write technology, then a logical storage space to physical storage space mapping is established using the Direct-on-time technology, and data is written to the allocated physical storage space. Select one:

Devices communicate with a fiber optic switch through fiber optic cables. One end of the fiber optic cable can connect to an FC HBA card, and the other end connects to a fiber optic switch or application server. Select one:

OceanStor UltraPath is multipath software developed by Huawei Technologies Co., Ltd., capable of shielding redundant LUNs. Select one:

Hard disks can be classified as enterprise-grade and desktop-grade based on their application scenarios. Select one:

In terms of processing write requests, Huawei NVMe all-flash arrays have no difference in efficiency compared to SAS all-flash arrays. Select one:

Huawei hybrid flash storage products consist mainly of controller enclosures and disk enclosures, providing customers with a highly reliable, high-performance, large-capacity intelligent storage platform.

RAID technology combines multiple individual physical hard disks into a single logical hard disk in various ways, providing higher storage performance and data redundancy than a single hard disk.

A LUN (Logical Unit Number) is a storage unit that can be directly mapped to the host for read and write operations, representing the external embodiment of a Volume object.

Select one: RAID 5 technology splits data into blocks and writes/reads them serially across multiple disks to improve access speed.

Consistency splitting in SmartMigration refers to multiple pairs simultaneously exchanging LUN information and then simultaneously breaking the pair relationship to ensure data consistency before and after splitting.

The storage system employs global wear leveling. When the wear level of SSDs reaches a certain threshold, the system preferentially wears out a small number of SSDs one by one to prevent simultaneous failures, significantly improving the reliability of the storage system.