ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Backup Exec B2D Job Rate Very Slow (Solved)

Updated on September 13, 2013
Slow B2D job rate
Slow B2D job rate

Problem with your backup time more than 24 hours because of slow job rate?

If you ever found that your backup to disk (B2D) time increase significantly as this picture, you may want to read this hub further. Firstly let speak about my media server specification and tape backup drive:

  1. Server HP DL 380 G5 with 4GB RAM and harddisk 2x 36GB (RAID1)
  2. MSA 400 with 6 x 146GB harddisk (RAID5)
  3. External tape backup HP Ultrium LTO 4

One day suddenly i found 1 harddisk on DL380 dead (we have 2 harddisk configured as RAID1) and causing degraded performance, since then i found that my daily backup job completion time increase from 9 hours to 36 hours. I checked the speed and found it only about 300MB/min , before it was 1600MB/min. Our daily data to backup is range from 700 to 800 GB.

36 hours is only for backup to disk job, i have another job which backup from disk to tape and this will took about 9 hours, means in total will be 45 hours (almost 2 days!). this is absolutely crazy.

With this speed i got big problem, i cannot run daily backup. Daily backup cannot run more than 24 hours as the next day backup job will not run.

Troubleshoting backup job rate problem

As this happen after 1 disk failed (RAID1), i quite confidence that by replacing with new harddisk the problem will gone. After replacing harddisk i wait for the system to full recovered and hope that the performance will back to normal. The harddisk recovery already fully complete but B2D job rate not change still about 300MB/min.

I tried to restart server several times but the result still same. Actually i ever experience this with external tape backup LTO4 and i resolve that issue by deleting the device on system, restart server and re-create/re-install tape driver. Base on that experience, i erase B2D files from backup exec console. I tried to run backup job again but the problem still exist.Oh yes, as additional information our B2D files divided into several 10GB files.

I begin scratching my head :-) as the problem should resolved ASAP because of our business nature.

Culprit of this problem

Under my confusion i tried to defragment harddisk and when analyzing found that my B2D files were fragmented. We have 45% files defragmented and most of them are B2D files as below picture.

I started run defragmentation to that harddisk/storage media and it took very long time (maybe 1 day) because the size and quantity of files to be defragmented.

Fragmented files can be disaster for backup job
Fragmented files can be disaster for backup job

How to defragment harddisk?

To defragment harddisk is quite simple and straigt forward. On your server (mine user Win 2003 server), click Start, all programs, accessories, system tools, disk defragmenter

harddisk defragmenter
harddisk defragmenter

To run harddisk defragmenter you should have at least 15% of free space. If you click analysis it will analyze whether you need to defrag your harddisk or not without running harddisk defragmentation. For 3.2 TB as mine will need sometimes to defrag.

Red is defragmented files, blue is moved files
Red is defragmented files, blue is moved files

Result after dragment harddisk

My long waiting for defragment was paid. Not only B2D speed increase to 2,200MB/min. Backup time to tape also increase to 2,700MB/min from 1,300MB/min. This only by doing harddisk defragmentation.

Job rate increase significantly after harddisk defrag
Job rate increase significantly after harddisk defrag

Still Slow After Defrag Your Disk?

The solution above works fine after several months but suddenly i found the same problem again, job rate is very slow about 350MB/sec the normal is about 2000MB/sec.

After some testing, from defragmenting disk, deleting backup media (file), manually create new job, i found that the problem is coming from disk itself. But no disk fails at all.

When i check with HP Array Configuration Utility (ACU) i found that there is warning about battery, this is battery of smart array card, not server battery as my other experience.


Fragmented B2D files can be serious problem with backup time because harddisk head must looking for data in another location. Ideally when reading a file harddisk head read in contiguous location.

Fragmented files also decrease job rate tape device, as harddisk read files from different sector.

Do harddisk defragmentation when job rate become slow, normal speed for my media server is about 2000MB/Min. It may differ with yours depend on your hardware capability.


    0 of 8192 characters used
    Post Comment

    • profile image


      4 years ago

      Howdy! Would you mind if I share your weblog with my twitter group? Theres lots of people that I think would truly enjoy your content material. Please let me know. Thanks aeebdcdfgdfd


    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)