Re: [Veritas-bu] Multiplexing / Streaming
Simon I believe this will happen - Your first job will kick off at 6PM with 3 streams. All these streams will go to one tape drive, because you have the MPX value on the schedule set at 3. The second policy will start at 7PM and generate another 3 streams. All these streams will go to a second tape drive, for the same reason. With the schedule's MPX setting at 3, you will never get more than 3 streams going to the drive that that schedule is backing up to, regardless of what MPX setting you have on the storage unit. I always set the MPX value on the schedule to the maximum (32 if I recall correctly) and manage the number of streams at the storage unit level. We could could give more specific real-world advice if we knew exactly what you are trying to do. Are the clients IP connected, or are they media servers? If IP, what network speed? What kind of tape drives? Do you want to be able to spread the I/O out across all 5 tape drives? Cheers Dean On 11/2/05, WEAVER, Simon [EMAIL PROTECTED] wrote: Hi can I have some opinions please?I am deeply concerned about backup speeds, and trying to get my head aroundstreaming and multiplexing.I have 3 available tape drives and I have 2 policies that I intend to run tonight. I want both policies to use the available drives where possible.I have told NBU I have 5 drives available - 2 are offline at the moment, but3 are readily there.The 1st policy will start at 6pm and contains 3 streams The 2nd Policy starts at 7pm and contains 3 streams.Both of the policies both state Media Multiplexing is set for 3NBU Master Storage Unit is set for Max Multiplexing per drive is 6. Does this sound right or have I missed the point?Thank you for any input!SimonThis email is for the intended addressee only.If you have received it in error then you must not use, retain, disseminate or otherwise deal with it. Please notify the sender by return email.The views of the author may not necessarily constitute the views of EADS Astrium Limited.Nothing in this email shall bind EADS Astrium Limited in any contract or obligation. EADS Astrium Limited, Registered in England and Wales No. 2449259Registered Office: Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS, England___Veritas-bu maillist- Veritas-bu@mailman.eng.auburn.eduhttp://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Antw: [Veritas-bu] Multiplexing / Streaming
Hi Simon It's seems right but you should still to enable in Attribute's policy - Allow multiple data streams Regards, Jerome WEAVER, Simon [EMAIL PROTECTED] 02.11.2005 12:37:02 Hi can I have some opinions please? I am deeply concerned about backup speeds, and trying to get my head around streaming and multiplexing. I have 3 available tape drives and I have 2 policies that I intend to run tonight. I want both policies to use the available drives where possible. I have told NBU I have 5 drives available - 2 are offline at the moment, but 3 are readily there. The 1st policy will start at 6pm and contains 3 streams The 2nd Policy starts at 7pm and contains 3 streams. Both of the policies both state Media Multiplexing is set for 3 NBU Master Storage Unit is set for Max Multiplexing per drive is 6. Does this sound right or have I missed the point? Thank you for any input! Simon This email is for the intended addressee only. If you have received it in error then you must not use, retain, disseminate or otherwise deal with it. Please notify the sender by return email. The views of the author may not necessarily constitute the views of EADS Astrium Limited. Nothing in this email shall bind EADS Astrium Limited in any contract or obligation. EADS Astrium Limited, Registered in England and Wales No. 2449259 Registered Office: Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS, England ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
RE: [Veritas-bu] Multiplexing / Streaming
This can be a hairy subject. Why do you want to use this option, before I start. Best Regards, Darby Moses -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of WEAVER, Simon Sent: Wednesday, November 02, 2005 6:37 AM To: veritas-bu@mailman.eng.auburn.edu Subject: [Veritas-bu] Multiplexing / Streaming Hi can I have some opinions please? I am deeply concerned about backup speeds, and trying to get my head around streaming and multiplexing. I have 3 available tape drives and I have 2 policies that I intend to run tonight. I want both policies to use the available drives where possible. I have told NBU I have 5 drives available - 2 are offline at the moment, but 3 are readily there. The 1st policy will start at 6pm and contains 3 streams The 2nd Policy starts at 7pm and contains 3 streams. Both of the policies both state Media Multiplexing is set for 3 NBU Master Storage Unit is set for Max Multiplexing per drive is 6. Does this sound right or have I missed the point? Thank you for any input! Simon This email is for the intended addressee only. If you have received it in error then you must not use, retain, disseminate or otherwise deal with it. Please notify the sender by return email. The views of the author may not necessarily constitute the views of EADS Astrium Limited. Nothing in this email shall bind EADS Astrium Limited in any contract or obligation. EADS Astrium Limited, Registered in England and Wales No. 2449259 Registered Office: Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS, England ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
