[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 302
  • Last Modified:

Compression of safety copies

When I form the safety copies I indicate that they should have compression but the copies are realized without compression, someone knows because?
0
MarDNT
Asked:
MarDNT
  • 3
1 Solution
 
Andrej PirmanCommented:
If you have selected "hardware compression" and your tape drive does not support it, your backup will be uncompressed.
0
 
MarDNTAuthor Commented:
I have selected hardware compression but if it is not exist, software.....
0
 
SelfGovernCommented:
What is your backup target (tape drive (which one?), or CD/DVD, or hard disk, or.... ?)?

How do you know that Veritas is not using either HW or SW compression?
0
 
MarDNTAuthor Commented:
I know that is not using compression because all the copies indicate compression 1:1. My backup target is tape drive, this is of a test
MEDIA IDENTITY/CONFIGURATION:

    |    |__     Vendor: HP      

    |    |__     Format: LTO-3

    |    |__     Capacity: 400 GB (native) 800 GB (assuming 2:1 compression)

    |    |__     Serial Number: 2150562817
|__ Test 'Data compression test' started on device 'HP Ultrium 3-SCSI' at address '3/0.4.0'

    |__ This test will overwrite all the data on this tape. Would you like to continue the test?

    |__ Analysis Results

    |    |__ Compression test started

    |    |__ Testing the Ultrium 3-SCSI

    |    |__ Compressed write transfer rate = 63.16 Mb/sec (I/O path, not backup data rate)

    |    |__ Compressed read transfer rate = 66.67 Mb/sec (I/O path, not backup data rate)

    |    |__ Read compression ratio is: 2.62 : 1

    |    |__ Write compression ratio is: 2.62 : 1

    |    |__ Total MB sent to host: 1200

    |__ Operations Log

    |    |__ Checking for a tape...

    |    |__ Checking for a write-protected cartridge...

    |    |__ Rewinding the tape...

    |    |__ Writing 1200 MB of data...

    |    |__ Rewinding the tape...

    |    |__ Reading 1200 MB of data...

    |    |__ Rewinding the tape...

    |    |__ Test Passed.

0
 
MarDNTAuthor Commented:
Finally,Choosing the compression only for software it has worked
0

Featured Post

Vote for the Most Valuable Expert

It’s time to recognize experts that go above and beyond with helpful solutions and engagement on site. Choose from the top experts in the Hall of Fame or on the right rail of your favorite topic page. Look for the blue “Nominate” button on their profile to vote.

  • 3
Tackle projects and never again get stuck behind a technical roadblock.
Join Now