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Simulataneous Backups to two media devices

Created: 08 Oct 2010 | 6 comments

I have a BackupExec 2010 SP1, running on a PowerEdge 610 with 4 GB of RAM, dual 2.53 Xeon CPUs.  The OS is W2K8 64-bit SP2.

A dual-port SAS5E is installed.  I have one PowerVault 124T LTO-4 Autloader connected; and looking to connect a PowerVault LTO-4 120.

Is there an article that discusses configuring multiple LTO-4 drives (e.g. Best Practices, Recommendations, etc.)?

Also are there any articles discussing Best Practices for increasing performance of the backups?

Comments 6 CommentsJump to latest comment

AmolB's picture

For every additional Tape drive in the library you need to install Library Expansion Option

license. For more infor on devcie and media refer to the below link.

http://www.symantec.com/business/support/index?page=content&id=TECH24414

How to improve performance http://www.symantec.com/docs/HOWTO23086

Kiran Bandi's picture

If you use a library with more than one drive connected you need Library Expansion Option (LEO) licences. For configuration BE admin guide may help you....

Hywel Mallett's picture

Are you intending to target jobs to both drives at the same time? If so, you may want to do the math about bandwidth. LTO4 can consume a truckload of bandwidth with a single drive. You might want to calculate whether two of them would saturate the SAS controller or the bus it's connected to.

Apart from that, there is the licensing aspect. From memory you'll need an LEO.

teiva-boy's picture

With BackupExec, you CANNOT write to two targets simultaneously.  You can write to one, and do a duplicate to another immediately after the first backup is finished.  

As for bandwidth, two LTO4 drives over a PCIe connection on a single SAS controller is fine.

There is an online portal, save yourself the long hold times. Create ticket online, then call in with ticket # in hand :-) http://mysupport.symantec.com "We backup data to restore, we don't backup data just to back it up."

Ken Putnam's picture

Slight clarification

No, you cannot write to two destinations from the same job simultaneously

Yes, two jobs can write to two destinations simultaneously

If this response answers your concern, please mark it as a "solution"

CraigV's picture

...and to clarify even further...the first device is a single-slot autoloader...the poster is talking about adding another stand-alone tape drive. No LEO needed!

Alternative ways to access Backup Exec Technical Support:

https://www-secure.symantec.com/connect/blogs/alte...