Flashcards
3. Huawei H13-511. Storage Technologies
Flashcards do conjunto (7)
- 1What are the common storage device categories? What are the different?1. Closed Storage System
2. Open Storage System
2.1 Built-in Storage
2.2 Attached Storage
2.2.1 DAS
2.2.2 FAS
2.2.2.1 NAS
2.2.2.2 SAN - 2What are the functions of RAID?Redundant Array of Independent Disk, is a storage technology that combines multiple physical disks into a logical unit for improving data redundancy and performance.
- 3What are the common RAID Levels? What are the technical priciples?RAID0,1,5,10.
- 4What are the advantages of Multipathing?1. Host that have multiple HBA´s and one virtual disk can connect to each other through multiple paths,
2. The multipathing software balances I/O loads dynamically among paths, improving the overall server performance.
3. The multipathing software test I/O paths practively and enables automatic path recovery.
The multipathing software supports a high-availability cluster. - 5What is the principle of snapshot? What are the applications of snapshot?Principle:
The original disk file of the VM becomes a read-only snapshot file, and the VM is redirected to a new disk file through I/O redirection. Afterwards, the new data is written to the new disk file, and the old data is read still on the original disk file.
Application:
1. can be used by administrator to save, recover, and maintain VM´s, providing rich experience for end users.
2. The feactures derived from snapshot include linked clones and non-persistent disks, wich provide custimers with multiple value-added services. - 6Raid increases the data read efficiency and also provides the data backup function (True or false)F
- 7What are the common storage device categories? a) DAS b) SAS c) NAS d) SANa,c,d ( creo que está mal redactada la pregunta)
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- Descrição
- 3. H13-511 Huawei Storage Technologies
- Criado por
- Manuel Eduardo Peña Pernia
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