Dell DR4300 DR Series System Cleaner Best Practices
Dell DR4300 Manual
View all Dell DR4300 manuals
Add to My Manuals
Save this manual to your list of manuals |
Dell DR4300 manual content summary:
- Dell DR4300 | DR Series System Cleaner Best Practices - Page 1
Dell DR Series Appliance Cleaner Best Practices Dell Engineering June 2016 A Dell Best Practices Document - Dell DR4300 | DR Series System Cleaner Best Practices - Page 2
INACCURACIES. THE CONTENT IS PROVIDED AS IS, WITHOUT EXPRESS OR IMPLIED WARRANTIES OF ANY KIND. Copyright © 2016 Dell Inc. All rights reserved. Dell and the Dell logo are trademarks of Dell Inc. in the United States and/or other jurisdictions. All other marks and names mentioned herein may be - Dell DR4300 | DR Series System Cleaner Best Practices - Page 3
11 A Additional cleaner commands ...13 A.1 Create a cleaner schedule...13 A.2 Examine the cleaner ...13 A.3 Modify the cleaner schedule...13 A.4 Running the cleaner manually ...14 B How to run the cleaner ...16 C Estimating cleaning work currently in progress ...17 D If the cleaner runs behind ...19 - Dell DR4300 | DR Series System Cleaner Best Practices - Page 4
no tuning or adjusting required. Only in extreme cases will the DR cleaner possibly may need calibration. This document is intended only for DR appliances which are exposed to the following extreme cases: Ingesting or deleting 100TB's or more per week Ingest occurs 24x7 When poor savings is - Dell DR4300 | DR Series System Cleaner Best Practices - Page 5
DR cleaner plays a critical role to a DRs capacity because it updates chunk reference counts and reclaims space when chunk references are equal zero. DR appliances are shipped with the cleaner setting to run automatically during idle time. In most cases, this setting allows more than enough time to - Dell DR4300 | DR Series System Cleaner Best Practices - Page 6
and runtimes, how to determine what the cleaner is doing and best practices on what to set. Note: To use this document, ensure the DR appliance is running 3.2.0.2 or 3.2.6.1. Build 3.2.0418.1a and future releases can also be used with this document. 6 DR Series - Dell DR4300 | DR Series System Cleaner Best Practices - Page 7
How to determine if the cleaner is keeping up Dell recommends that a full cleaner pass compete once every 7 and it is not reporting to reclaim space, that does not mean there is an issue or problem with the cleaner. When cleaner is running, somecleaner phases do not reclaim data space. Only when - Dell DR4300 | DR Series System Cleaner Best Practices - Page 8
seconds / 86,400 = 2.99 days. Because the cleaner completed its latest job within a week's time frame (7 days), the cleaner is not falling behind. 8 DR Series Appliance Cleaner Best Practices - Dell DR4300 | DR Series System Cleaner Best Practices - Page 9
cleaner runtimes. 1. If the cleaner is set to run automatically (default setting) schedule the cleaner to run for 40 or more hours per cleaning to run during low periods where there is not a full backup load. See Appendix-C & D for additional details and examples. Appliance Cleaner Best Practices - Dell DR4300 | DR Series System Cleaner Best Practices - Page 10
has not yet completed a full pass or has taken beyond 7 days to complete, increase the cleaner schedule runtimes and repeat this step. 10 DR Series Appliance Cleaner Best Practices - Dell DR4300 | DR Series System Cleaner Best Practices - Page 11
When the cleaner is triggered to run by manual, scheduled or forced methods, the cleaner is Raymond has been successfully running his DR appliance at his computing center for the past he feels his cleaner is not completing within the Dell recommendation of a 7 day timeframe. Inspect Raymond - Dell DR4300 | DR Series System Cleaner Best Practices - Page 12
Raymond adjusted cleaning schedule successfully completes in 6.78 days which meets Dells recommended full cleaner pass of 7 or less days. 12 DR Series Appliance Cleaner Best Practices - Dell DR4300 | DR Series System Cleaner Best Practices - Page 13
CLI: schedule --show --cleaner A.3 Modify the cleaner schedule Using the CLI: schedule --add --day Sunday --start_time 06:00 --stop_time 22:00 --cleaner 13 DR Series Appliance Cleaner Best Practices - Dell DR4300 | DR Series System Cleaner Best Practices - Page 14
The cleaner can be manually run and is a onetime run and will complete a full cleaner pass very quickly as it does not pause for any DR activities until the cleaning process has completed. Using the CLI: maintenance --filesystem --reclaim_space 14 DR Series Appliance Cleaner Best Practices - Dell DR4300 | DR Series System Cleaner Best Practices - Page 15
Using the GUI: 15 DR Series Appliance Cleaner Best Practices - Dell DR4300 | DR Series System Cleaner Best Practices - Page 16
been completed. At a minimum, the DR appliance will need to run through a full cleaner pass at least once per week. Dell recommends the cleaner process to be run 6-8 free up disk space as quickly as possible is desired, manually running the cleaner is recommended. 16 DR Series Appliance Cleaner - Dell DR4300 | DR Series System Cleaner Best Practices - Page 17
value reaches 0, the cleaner has completed a full pass. To determine the current state of the cleaner, run the following command: Stats --system 17 DR Series Appliance Cleaner Best Practices - Dell DR4300 | DR Series System Cleaner Best Practices - Page 18
cleaner is outside of its scheduled window of operation and the DR is not idle, but is busy with ingest or replication. 18 DR Series Appliance Cleaner Best Practices - Dell DR4300 | DR Series System Cleaner Best Practices - Page 19
practices outlined in Section-3 of this document. Example Cindy manages backups at a pharmaceutical company which includes multiple remote DR appliances replicating to a production site. Cindy notices that her production site DR appliance is rapidly and unexpectedly running out of free space. Since - Dell DR4300 | DR Series System Cleaner Best Practices - Page 20
appliance free space is critically low, she must aggressively schedule the cleaner to recover disk space as quickly as possible by running the cleaner manually a critical state. Cindy's cleaner debt is substantial because it is ~75% Dell's recommended 7-day full cleaner pass (5.3 / 7 = .75). Thus, - Dell DR4300 | DR Series System Cleaner Best Practices - Page 21
the 90 hour per week cleaning schedule and expects a full cleaning pass to complete within the next couple days. After waiting a week (for the next backup to occur), she runs the following command: stats --cleaner 21 DR Series Appliance Cleaner Best Practices - Dell DR4300 | DR Series System Cleaner Best Practices - Page 22
debt progress and such little cleaner debt remaining, Cindy believes that the current cleaner settings will accomplish Dells recommended full cleaner pass within the next 7 days during next week's backup cycle. Thus, Cindy does not make any cleaner adjustments and waits 7 days to inspect the cleaner - Dell DR4300 | DR Series System Cleaner Best Practices - Page 23
pass actually completes in 4.76 days (411,480 / 86,400). Cindy will wait another 3-6 months and will reexamine if her cleaning runtimes. 23 DR Series Appliance Cleaner Best Practices - Dell DR4300 | DR Series System Cleaner Best Practices - Page 24
E Cleaner monitoring and adjustment flow chart 24 DR Series Appliance Cleaner Best Practices
A Dell Best Practices Document
Dell DR Series Appliance Cleaner Best
Practices
Dell Engineering
June 2016