How to Reduce Backup Window have 500 clients environment

[Marianne]

You give us NOTHING to work with?

Number of media servers?

Type of backup devices? Number of tape drives?

Network infrastructure?

SAN infrastructure?

Type of Clients?
Data sizes on clients?
Capabilities of client to generate data stream?

There is no 'magic wand'.

You can have a look at the Planning and Performance Guide  http://www.symantec.com/docs/TECH62317  for guidelines.

[Yuvi]

One Media and One Master servers

IBM With 16 drives

Via Fibre cables and LAN cables using backup.

SAN for 10 clients having huge data

Windows,UNIX,Linux clients

Huge totally 65 GEN4 Tapes per schedule.

Having differnt configuration for all clients not able to distinguish.Please provide me to prove the data backup faster.

[Marianne]

I have provided you with a link to the Planning and Performance Guide in my previous post.

There is no 'quick fix' for backup performance. 

As per the above document, you need to test each client's capability to generate data stream (test read speed from disk).
Next, check/test network transfer rate.
Only when these two components are known can you start looking at media servers and what can be done as far as buffer tuning.
Other tuning parameters include multiplexing at Storage Unit and schedule level.

Clients with large amount of data (more than 500 Gb) should be turned into San Media Servers (Enterprise Client).

Please work through the Planning and Performance Guide and let us know if anything is unclear.

[mph999]

???

OK, you have x1 master and x1 media with 16 LTO4 tape drives.

What does this mean :    "San for 10 clients having hugh data"

You use x65 tapes in a schedule ... 

You don't say how many clients are in this schedule, x1 or x50 etc ...

There is not enough information to answer anything here.

This is the sort of details that is needed.

1. How much time is available for a full backup (in hours)?

2. Total data on servers with attached tape libraries (in GB)?

3. Total data on clients transferred across the network (in GB)?

4. Daily data change, as a % of the total?

5. Number of incrementals per week?

6. Retention period of incrementals (weeks)?

7. Number of full backups per month?

8. Retention period of full backups (weeks)?

9. Number of libraries and type of library?

10. Total slots (for media) available for on-line storage?

11. Available slots used for system recovery tapes?

12. Available slots used for cleaning tapes?

13. Transfer rate of SCSI or Fibre Channel buss from servers to libraries?

14. Number of SCSI or Fibre Channel busses from servers to libraries?

15. Number of tape drives and type?

16. Single tape drive transfer rate (native, GB/Hr)?

17. Native capacity per tape?

18. Will you be using compression?

19. What do you expect the compression to be?

20. Network throughput (GB/Hr)?

21. Number of network connections?

Then we might be able to work something out.

Martin

[Yuvi]

Answerin the questions below,

1.72 Hours

2. 500 clients each with 150GB of data

3.100 GB

4.Minimum 25 to 35%

5.Five incrementals

6.2 weeks

7.5 full backup

8.3 months to i year

9.2  IBM LTO4 libraries contains with slots

10. 100 to 150 slots

11.100

12.10 to 20

13.5200KB/Sec

14.No Idea physically connected initially but connected via master servers

15. 32 LTO4 drives

16.native

17.600 to 700 GB

18.client side

19.no idea (normal) need to fine tune

20.2 n/w connections

[Marianne]

Please see my post of 30 July:

https://www-secure.symantec.com/connect/forums/how-reduce-backup-window-have-500-clients-environment...

[Yuvi]

Thank You....