RE: LTO-5 Throughput
Try the block size first. If BE doesn't support multiple streams per job you may have to try splitting the job into multiple jobs or something just to get it pulling multiple files in parallell - single threaded read, particularly if Veeam produces lots of little files, is bad news for backup. From: Roger Wright [rhw...@gmail.com] Sent: 12 August 2011 6:20 PM To: NT System Admin Issues Subject: Re: LTO-5 Throughput Unfortunately, Backup Exec doesn't support multiple streams (multiplexing). I've been asking for that since switching from ARCserve but Symantec choose to only include that feature in their Net Backup product. I'll increase the block size and see if it helps. Roger Wright ___ My short term goal is to make it through the day. My long term goal is to string a bunch of short term goals together. On Fri, Aug 12, 2011 at 1:02 PM, Paul Hutchings mailto:paul.hutchi...@mira.co.uk>> wrote: Usually you’ll want to set the block size to 256kb and use multiple streams (not sure if that’s what Backup Exec calls them) to pull multiple sets of data from the drives to the tape. Paul From: Roger Wright [mailto:rhw...@gmail.com<mailto:rhw...@gmail.com>] Sent: 12 August 2011 17:57 To: NT System Admin Issues Subject: LTO-5 Throughput I have a new backup system with Backup Exec 2010 R3 and a Quantum Autoloader with an LTO-5 drive and SAS connection to the server. The backup server has 8GB RAM, 20TB DAS and captures our VDK's using Veam's latest release. We're using tape to get the backups offsite until we have opportunity to get a replication system in place. Total dataset is about 5TB. I'm trying to maximize my throughput to the drive an am currently hitting about 7GB/min. I have the drive config set as follows: Block size: 64KB Buffer size: 1MB Buffer count: 20 High water: 5 Single block mode disabled for Read & Write Read SCSI pass-through - unchecked Write SCSI pass-through - checked Any recommended tweaks to improve the drive performance further? Roger Wright ___ My short term goal is to make it through the day. My long term goal is to string a bunch of short term goals together. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin MIRA Ltd Watling Street, Nuneaton, Warwickshire, CV10 0TU, England Registered in England and Wales No. 402570 VAT Registration GB 100 1464 84 The contents of this e-mail are confidential and are solely for the use of the intended recipient. If you receive this e-mail in error, please delete it and notify us either by e-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the e-mail as this is prohibited. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
Re: LTO-5 Throughput
Unfortunately, Backup Exec doesn't support multiple streams (multiplexing). I've been asking for that since switching from ARCserve but Symantec choose to only include that feature in their Net Backup product. I'll increase the block size and see if it helps. Roger Wright ___ My short term goal is to make it through the day. My long term goal is to string a bunch of short term goals together. On Fri, Aug 12, 2011 at 1:02 PM, Paul Hutchings wrote: > Usually you’ll want to set the block size to 256kb and use multiple > streams (not sure if that’s what Backup Exec calls them) to pull multiple > sets of data from the drives to the tape. > > ** ** > > Paul > > > > *From:* Roger Wright [mailto:rhw...@gmail.com] > *Sent:* 12 August 2011 17:57 > *To:* NT System Admin Issues > *Subject:* LTO-5 Throughput > > ** ** > > I have a new backup system with Backup Exec 2010 R3 and a Quantum > Autoloader with an LTO-5 drive and SAS connection to the server. The backup > server has 8GB RAM, 20TB DAS and captures our VDK's using Veam's latest > release. We're using tape to get the backups offsite until we have > opportunity to get a replication system in place. Total dataset is about > 5TB. > > ** ** > > I'm trying to maximize my throughput to the drive an am currently hitting > about 7GB/min. > > I have the drive config set as follows: > > ** ** > > Block size: 64KB > > Buffer size: 1MB > > Buffer count: 20 > > High water: 5 > > Single block mode disabled for Read & Write > > Read SCSI pass-through - unchecked > > Write SCSI pass-through - checked > > ** ** > > Any recommended tweaks to improve the drive performance further? > > > Roger Wright > ___ > > My short term goal is to make it through the day. > > My long term goal is to string a bunch of short term goals together. > > ** ** > > ** ** > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to listmana...@lyris.sunbeltsoftware.com > with the body: unsubscribe ntsysadmin > -- > *MIRA Ltd* > > Watling Street, Nuneaton, Warwickshire, CV10 0TU, England > Registered in England and Wales No. 402570 > VAT Registration GB 100 1464 84 > > The contents of this e-mail are confidential and are solely for the use of > the intended recipient. If you receive this e-mail in error, please delete > it and notify us either by e-mail, telephone or fax. You should not copy, > forward or otherwise disclose the content of the e-mail as this is > prohibited. > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to listmana...@lyris.sunbeltsoftware.com > with the body: unsubscribe ntsysadmin > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
RE: LTO-5 Throughput
Usually you'll want to set the block size to 256kb and use multiple streams (not sure if that's what Backup Exec calls them) to pull multiple sets of data from the drives to the tape. Paul From: Roger Wright [mailto:rhw...@gmail.com] Sent: 12 August 2011 17:57 To: NT System Admin Issues Subject: LTO-5 Throughput I have a new backup system with Backup Exec 2010 R3 and a Quantum Autoloader with an LTO-5 drive and SAS connection to the server. The backup server has 8GB RAM, 20TB DAS and captures our VDK's using Veam's latest release. We're using tape to get the backups offsite until we have opportunity to get a replication system in place. Total dataset is about 5TB. I'm trying to maximize my throughput to the drive an am currently hitting about 7GB/min. I have the drive config set as follows: Block size: 64KB Buffer size: 1MB Buffer count: 20 High water: 5 Single block mode disabled for Read & Write Read SCSI pass-through - unchecked Write SCSI pass-through - checked Any recommended tweaks to improve the drive performance further? Roger Wright ___ My short term goal is to make it through the day. My long term goal is to string a bunch of short term goals together. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin -- MIRA Ltd Watling Street, Nuneaton, Warwickshire, CV10 0TU, England Registered in England and Wales No. 402570 VAT Registration GB 100 1464 84 The contents of this e-mail are confidential and are solely for the use of the intended recipient. If you receive this e-mail in error, please delete it and notify us either by e-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the e-mail as this is prohibited. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
