A company has multiple servers that run Microsoft Windows Server. All the servers have
compressed data stored on disk. What should you consider when designing an HP Data Protector
backup solution for this environment?
A.
Backup speed is increased because Data Protector backs up Windows disks as disk images.
B.
Backup speed is reduced because Windows reads and writes filesystems to cache.
C.
Backup speed is increased because Data Protector use asynchronous reading on Windows
filesystems.
D.
Backup speed is reduced because Windows decompresses the data before sending it across the
network.
I think the answers is D
I experimented this situation
https://support.symantec.com/en_US/article.TECH34346.html
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I think the answers is D too
See p.47 of hp_man_DP9.00_Concepts_pdf.pdf
“If data is compressed on a disk, the Windows operating system first decompresses the data before sending it across the network. This reduces the backup speed and uses CPU resources.”
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Asynchronous reading – nothing to do with compressed data
This option was introduced with Data Protector 6.1 and enables faster reading for data that is striped across multiple physical disks.
It applies to disk arrays if their logical drives are configured in striped mode.
Note:
Asynchronous reading was not designed for reading data from the same physical disk.
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