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SG0-001 · Question #305

Click the Exhibit button. You are integrating a local tape backup solution in your IT environment. What can cause the Gigabit Ethernet to become the bottleneck in this backup environment?

The correct answer is B. metadata if millions of files are backed up. When performing local tape backups of millions of files, the processing and transfer of metadata over a Gigabit Ethernet link can become the primary performance bottleneck.

Storage Functionality

Question

Click the Exhibit button. You are integrating a local tape backup solution in your IT environment. What can cause the Gigabit Ethernet to become the bottleneck in this backup environment?

Exhibit

SG0-001 question #305 exhibit

Options

  • Aagent installation during backup sessions
  • Bmetadata if millions of files are backed up
  • Csecond file copy of backup data to the catalog database
  • Ddata traffic through the backup server to the tape library

How the community answered

(36 responses)
  • A
    14% (5)
  • B
    75% (27)
  • C
    3% (1)
  • D
    8% (3)

Why each option

When performing local tape backups of millions of files, the processing and transfer of metadata over a Gigabit Ethernet link can become the primary performance bottleneck.

Aagent installation during backup sessions

Agent installation is an infrequent setup task, not a continuous activity that would bottleneck ongoing backup sessions.

Bmetadata if millions of files are backed upCorrect

Backing up millions of files generates an extensive amount of metadata, including file names, attributes, and directory structures. The sheer volume of these small metadata operations and associated network packets can saturate a Gigabit Ethernet link, causing it to become the bottleneck even if the raw data throughput capacity is higher.

Csecond file copy of backup data to the catalog database

A second file copy to a catalog database is typically an internal process or local storage operation, not primarily limited by Gigabit Ethernet for the main backup data flow to tape.

Ddata traffic through the backup server to the tape library

While actual data traffic could be a bottleneck, the question specifically highlights the impact of 'millions of files' which points to metadata overhead as the critical factor for a Gigabit Ethernet link.

Concept tested: Backup bottlenecks, metadata overhead, network performance

Source: https://learn.microsoft.com/en-us/windows-server/administration/performance-tuning/subsystem/storage/storage-performance

Topics

#tape backup#bottleneck#metadata#Gigabit Ethernet

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