Re: AIT drives
AIT = Advanced Intelligent Tape. 1. I belive this have been discussed before, but please correct me if I'm wrong when I say Retrospect doesn't take advantage of the chiptechnology inside those tapes. 2. Would it be wise (possible??) to cycle those tapes in six or eight week periods? (We have cd backups for the archive.) 3. It is possible to connect and use the drive to a computer that just have the regular SCSI or dose the drive demand Wide SCSI to work at all? thanx, / jakob -- -- To subscribe:[EMAIL PROTECTED] To unsubscribe: [EMAIL PROTECTED] Archives:http://list.working-dogs.com/lists/retro-talk/ Problems?: [EMAIL PROTECTED]
KVM Switchboxes and Backup Server
All.. Is anyone else out there using Belkin OmniView Pro KVM (Keyboard-Video-Mouse) switch-boxes with their Mac and PC Backup Servers, as well as other servers? Some background -- At Motorola, we have a large investment in these switch-boxes, to control all of our servers in the racks that we have, mainly because the 8-port boxes can be daisy-chained to allow for 127 devices. Now, we have not actually gotten that far, but we do have at least 2-3 boxes daisy-chained. We have multiple 3-shelf, 150-200 foot racks, allowing us to place roughly 50-60 servers neatly on the shelves, and control them from a central KVM station. Here is the Retrospect related question -- The switch-box requires that you press "SCROLL LOCK" twice, to get it's attention, and doing so it "beeps". You then have the option of pressing an assortment of keys that only the switch-box "sees" and interprets (switch between different inputs) and then it gives control back to the server that is currently selected. Unfortunately, when you press SCROLL LOCK, the switch box does not always hear your key press right away, sometime you must press the SCROLL LOCK 3-6 times, before you get the "Ok, I am listening" beep. I am afraid that Retrospect (Windows OS or Mac OS) is interpreting the SCROLL LOCK as a pause, and causes the backup server to just sit there. I am thinking that the PC does not get a "key up" event from the keyboard driver (probably the switch-box interfering here), and just waits until you "click the mouse" or "press a key" to get a "key up" before it continues. Here is an example. Notice that the last event was 5:30:39 PM, and the next time something happened was 8:26:53 AM. The entire night was passed up, nobody was backed up. Keep in mind I have checked the obvious, and all scripts are as they have been for years, and the time frames indicate that Retrospect will backup at least 40-50 clients each evening. The log shows this from previous evenings. - + Normal backup using ITBKUP-Gamma-Always at 3/8/2000 4:45 PM To backup set ITBKUP-gamma-MAR-2000... - 3/8/2000 4:45:08 PM: Copying 4GB_NTFS (C:) on Moulton, Bernard-L1-zeta 3/8/2000 4:45:08 PM: Connected to Moulton, Bernard-L1-zeta ... yada ... yada ... yada ... yada ... yada ... yada ... 3/8/2000 5:30:33 PM: Snapshot stored, 4,964 KB 3/8/2000 5:30:39 PM: 5 execution errors Remaining: 5 files, 548 KB Completed: 21667 files, 1.8 GB Performance: 41.0 MB/minute Duration: 00:45:30 (00:02:50 idle/loading/preparing) + Duplicate using Backup Server Backup at 3/9/2000 8:26 AM - 3/9/2000 8:26:53 AM: Copying Retrospect on Drive C (C:) 3/9/2000 8:26:54 AM: Execution completed successfully Duration: 00:00:01 - 3/9/2000 8:27 AM: Backup Server stopped + 3/9/2000 8:32 AM: Backup Server started - If I happen to use the KVM during the afternoon, but go to my desk and check the backup server with Timbuktu, the system will backup all-night-long. This is what I have noticed. Can anyone offer any assistance here? Suggestion to what might be wrong if I do not have the right conclusion? Thanks! :) ..Greg - * Think Different * - Greg Jewett, Server/Project Engineer Phone: (512) 996-4257 Motorola IT Department Pager: (800) 478-4034 Parmer Lane - IT DepartmentePage: [EMAIL PROTECTED] -- -- To subscribe:[EMAIL PROTECTED] To unsubscribe: [EMAIL PROTECTED] Archives:http://list.working-dogs.com/lists/retro-talk/ Problems?: [EMAIL PROTECTED]
RE: Restore and error -37 bug
DId you figure out what the offending character is? -Original Message- From: Rees Griffiths [mailto:[EMAIL PROTECTED]] Sent: Thursday, March 09, 2000 4:28 AM To: retro-talk Subject: Restore and error -37 bug Dear All, In performing a restore of a backed up Macintosh I came across I consider a bug. A user somehow has managed to create a folder on the client Macintosh with some sort of illegal character(s) in a folder name. However the backups have happily backed up all the files within that directory. The bug means that the restoration stops when it gets to this directory, Retrospect doesn't continue restoring everything else it can, and only makes a note in the log that it stopped due to -37 error. It doesn't say where it stopped. So I've had to perform a backup of a half the client at a time to finally track down the offending folder. Perhaps the Dantz team could do something about this in a future release. I'd be happy to provide them with more details. Cheers Rees Because e-mail can be altered electronically, the integrity of this communication cannot be guaranteed. -- -- To subscribe:[EMAIL PROTECTED] To unsubscribe: [EMAIL PROTECTED] Archives:http://list.working-dogs.com/lists/retro-talk/ Problems?: [EMAIL PROTECTED]
Re: AIT drives
On Thu, Mar 09, 2000 at 03:24:17PM +0100, jakob krabbe wrote: AIT = Advanced Intelligent Tape. 1. I belive this have been discussed before, but please correct me if I'm wrong when I say Retrospect doesn't take advantage of the chiptechnology inside those tapes. Currently Retrospect does not talk to the chips on the tape. In most cases, the utility of the chip is minimal since most of the ideas that people were going to use it for are duplicated within Retrospect already (tape indices, etc.) The one thing I'm hoping that Retrospect will do is embed the name of the tape on the chip so that you don't have to physically load each tape all the way into the loader to determine the tapes that are inserted. Well - two things - the tape also tracks overall usage and error rates on write operations so it would be useful to have a flag that checks this data and alerts you when an arbitrary reliability threshold has been exceeded before you reuse a tape. 2. Would it be wise (possible??) to cycle those tapes in six or eight week periods? (We have cd backups for the archive.) Yup - that wouldn't be a problem. One of the key advantages of the AIT/VXA Advanced Metal Evaporative (AME) physical media is that it doesn't degrade with use as rapidly as does a DLT or DAT tape that uses a glue binder to attached the magnetic media to the physical tape itself. 3. It is possible to connect and use the drive to a computer that just have the regular SCSI or dose the drive demand Wide SCSI to work at all? You can hook it up to a regular SCSI - you just won't see the high end performance. On a beige G3 I've seen throughput up to 200Mb/min using the built-in SCSI port. There's an excellent white paper available from Spectralogic that covers all the technical details quite well at: http://www.spectralogic.com/resources/brochure/White_Paper_Tape_Drive_Technology.pdf Cheers, Erik Ableson -- -- To subscribe:[EMAIL PROTECTED] To unsubscribe: [EMAIL PROTECTED] Archives:http://list.working-dogs.com/lists/retro-talk/ Problems?: [EMAIL PROTECTED]
Re: AIT drives
Does anyone have any experience with the LaCie AIT 35 GB/70 GB drives? I've been using an APS 35/70 AIT drive for ~5 months now on a biege desktop 266MHz G3 running MacOS 9 Retrospect 4.1 (now 4.2) to do nightly backups on 24 disks on 12 Macs 2 PC's with zero problems from the tape drive. At ~$2K for the drive plus something like $300 for an Adaptec 2940UW ultra wide SCSI card it was financially much more attractive than ~$4K for a 35/70 DLT drive. I had a LaCie 15/30 DLT drive for ~2 years before that was very happy with it but the $$$ difference was too much to pass up when our data storage outgrew the DLT. Based on my experience to date, I would certainly recommend this AIT drive SCSI card. Regards, Ted Ted Baker System/Database Administrator 7 Borehole Bldg., 61 Rt. 9-W Lamont-Doherty Earth Observatory of Columbia University Palisades, New York 10964 U.S.A. 914-365-8663 (voice) 914-365-3182 (fax) [EMAIL PROTECTED] http://www.ldeo.columbia.edu/BRG -- -- To subscribe:[EMAIL PROTECTED] To unsubscribe: [EMAIL PROTECTED] Archives:http://list.working-dogs.com/lists/retro-talk/ Problems?: [EMAIL PROTECTED]
