Wes - My thoughts exactly. I emailed Veritas to see what they think.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Wes Owen Sent: Wednesday, March 13, 2002 10:31 AM To: NT 2000 Discussions Subject: RE: Backup Strategy with Tons-O-Directories I wonder if actually backing it up over the wire could actually improve speeds. The AA is supposed to pre-package the data and send it in a solid stream. It might be worth a try. -----Original Message----- From: Ron Jameson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 13, 2002 9:33 AM To: NT 2000 Discussions Subject: RE: Backup Strategy with Tons-O-Directories The LTO is connected locally to the main server. When I mentioned the amount of small files and directories to Overland, they said I will not get the rated speed. Yes, LTO should be pumping 960MB/Min & 57g/hr in the best conditions. I have not tried over the wire backups yet to see how well the veritas agents stream the data. My biggest issue in my gut says, the hard drives are slow but also there are TOO many small files. With the directories increasing about 3,000 per year, it adds up to a lot of bits. I can figure the hard drives are just going nuts trying to feed the tape drive...but that is my educated answer. Ron -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Wes Owen Sent: Wednesday, March 13, 2002 8:54 AM To: NT 2000 Discussions Subject: RE: Backup Strategy with Tons-O-Directories We see speeds between 300 and 800 MB min. whether locally attached or network using the M2 Drives, depending on type of data. LTO should be about 20% faster then that I believe. -----Original Message----- From: Wes Owen [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 13, 2002 8:47 AM To: NT 2000 Discussions Subject: RE: Backup Strategy with Tons-O-Directories We are seeing times using M2 drives of 300 GB in 6 to 8 hours. There has to be something else going on here. Is the tape drive locally attached to the server or are you backing up over the network. If over the network did you install the accelerator agent? -----Original Message----- From: Ron Jameson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 13, 2002 8:39 AM To: NT 2000 Discussions Subject: Backup Strategy with Tons-O-Directories All you backup optimizing experts out there here is a good one - After finally getting a successful backup with a new Overland Ext. LTO drive after dealing with a lot of problems with SCSI Timeouts (ended up switching card to LSI Logic so as not to contend with onboard Adaptec), the time to backup 21g was 7 hours. WOW - Isn't that great?!? Not really. It sucks!!. It only shaved 2 hours from the DAT when in theory (best data stream and file size), it should handle 50g in an hour. Anyway, here is my problem/request for advise. Server Config: 36g Ultra SCSI2, 5400 RPM connected to onboard Adaptec 78xx Asus MB, Twin 450mhz, 1g RAM, Win2k Server Overland Ext. LTO on LSI Logic SCSI Card 22g of data is being backed up 750,000 files (mainly under 10mb and lots of small files) 43,000 directories (yes, that is correct) Veritas Backup Exec 8.6 with server and exchange agents for remote servers. Note: My backup window is 11pm - 7am Network config: 50 power users (accounting firm) on 10/100 3com NICS (2) 48port 3com 10/100 switches 10/100 to the server from switch (needs improvement here including segmentation) The data is only live data - I have not even included the balance of the server data, the email server, terminal server and web server which I have agents installed to do over the wire backups. What are admins doing in a situation like this, to get the best backup speed in the shortest of times? My thoughts are: 1) backup to a drive - then backup the second drive if the file copy does not take too long. May have to put the LTO on a different media server so as not to drag down the data server. Can 2 servers be connected to the same external (via SCSI) storage system? 2) Get some 10k RPM drives and ghost the system to those to replace the 5400 ones (too bad the 15k do not come larger than 36g). 3) I have not tested agent speed on veritas, but does that optimize the data more efficiently than backing up from the local drive? If so, I should move the LTO to another server and backup over the wire. Will have to verify net speed. Should the backup system be moved to its own segment via a Gig port. Hope someone can advise on this nightmare. Getting another LTO is not quite the cost effective option. Ron Jameson James Hamlin Consulting ------ You are subscribed as [EMAIL PROTECTED] Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe send a blank email to [EMAIL PROTECTED] This e-mail and any files transmitted with it are confidential and are intended solely for the use of the individual or entity to whom they are addressed. 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