In general TSM will send 1 stream for each source, but I would suggest that you go to a disk pool first unless the objects are very large. We run our large BCV backup to disk then migrate to virtual tape later. What you have to be careful of is creating too many virtual drives as this may slow down the VTL and is also harder to manage.
Andy Huebner -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Kenny Sent: Tuesday, September 11, 2007 3:37 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] Maximum throughput with Windows 2003 Hi Ian, Great information... I had no idea Windows 2003 could get read speeds of 400MB/s. My proposed VTL does not do de-dupe in line, it is a post process so I am not concerned with VTL performance. I need to backup about 10 TB's from the array. This is a mix of file system, email and database... I will be using BCV's and mounting those volumes on Win 2003 hosts. I am not sure how much impact TSM has on moving data? I have a choice. I can use VTL or add more physical LTO-3 drives... I understand the benefits of a VTL in a TSM environment, but more specifically... LTO-3 can do 80MB/sec. If I have 4 drives allocated to Windows host, I don't think I can keep them streaming? Will I be better off with 8 virtual drives? Will more streams give me more performance with TSM? I am new to TSM, I know it does not do multiplexing but not sure about multistreaming? Am I better off creating multiple BCV's and mounting different file systems in order to have more streams or should I keep it simple and have larger luns with only a single stream? Thanks again for the help. Pat +---------------------------------------------------------------------- |This was sent by [EMAIL PROTECTED] via Backup Central. |Forward SPAM to [EMAIL PROTECTED] +---------------------------------------------------------------------- This e-mail (including any attachments) is confidential and may be legally privileged. If you are not an intended recipient or an authorized representative of an intended recipient, you are prohibited from using, copying or distributing the information in this e-mail or its attachments. If you have received this e-mail in error, please notify the sender immediately by return e-mail and delete all copies of this message and any attachments. Thank you.
