Re: Tape backup / Bizzare Device Question
Hi Graham, Not sure about the first part, but the device is called a radiometer. http://radiometer.hobbytron.com/Radiometer.html http://science.howstuffworks.com/question239.htm Greg Graham Bentley said: Is there a way to create a hdd resore solution with set of boot floppies that will support my tape drive access the tape and restore the entire hard disc in case of disc failure disaster ? ie So I could install a new disc and be up and running without doing any additional admin? I guess like a 'ghost' for scsi tape ? Any advice / links etc apperciated. Also Description: Glass bulb, similar to light bulb but with narrow end flared at bootom so it standsup. Inside, a rotating wire device that has 4 squares of card like material attached, like vanes. One one side they are black on the other they are white. When the sun shines brightly enough, the white side reflects the light energy and the black side absorbs it. The vanes spin around. This does exist and has a name and I know there are some very knowledgeable people on this list who will know. Whats it called. please !!! ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Tape backup / Bizzare Device Question
Graham Bentley said: Is there a way to create a hdd resore solution with set of boot floppies that will support my tape drive access the tape and restore the entire hard disc in case of disc failure disaster ? ie So I could install a new disc and be up and running without doing any additional admin? I guess like a 'ghost' for scsi tape ? Any advice / links etc apperciated. Look at Bacula. http://www.bacula.org/ Although I haven't bothered to create a restore boot-cd yet, my restore procedure doesn't require it, I believe I saw documentation about it somewhere in there. Plus it's a fine backup/restore application. -- -- Perfection is just a word I use occasionally with mustard. --Atom Powers-- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Tape backup / Bizzare Device Question
On Tue, Mar 07, 2006 at 02:09:40PM -, Graham Bentley wrote: Description: Glass bulb, similar to light bulb but with narrow end flared at bootom so it standsup. Inside, a rotating wire device that has 4 squares of card like material attached, like vanes. One one side they are black on the other they are white. When the sun shines brightly enough, the white side reflects the light energy and the black side absorbs it. The vanes spin around. This does exist and has a name and I know there are some very knowledgeable people on this list who will know. It's called a radiometer. I've seen them called other things, like a lightmill or a light gauge. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Tape backup / Bizzare Device Question
Graham Bentley wrote: Is there a way to create a hdd resore solution with set of boot floppies that will support my tape drive access the tape and restore the entire hard disc in case of disc failure disaster ? ie So I could install a new disc and be up and running without doing any additional admin? I guess like a 'ghost' for scsi tape ? Any advice / links etc apperciated. Bacula will do what you want. Also Description: Glass bulb, similar to light bulb but with narrow end flared at bootom so it standsup. Inside, a rotating wire device that has 4 squares of card like material attached, like vanes. One one side they are black on the other they are white. When the sun shines brightly enough, the white side reflects the light energy and the black side absorbs it. The vanes spin around. This does exist and has a name and I know there are some very knowledgeable people on this list who will know. Whats it called. please !!! A lightmill or Radiometer. DAve ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] -- This message was checked by forty monkeys and found to not contain any SPAM whatsoever. Your monkeys may vary ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Tape backup solution? [OT]
In the last episode (Dec 31), Eric F Crist said: I have a question that's slightly off-topic, but not. I install high-end surveillance equipment for CCTV and such. I have a rather large client in Minneapolis who's using Dedicated Micros digital video recorders. The particular model we're using has a 500 GB hdd, but this client would like to archive images to tape for longer storage. As of now, we're only getting about 2 months of recording time. For off-site viewing, this unit can off-load images to a SCSI cd recorder. Does anyone suggest a tape backup device that would be SCSI and external, with a fairly high-capacity? I'm thinking around 50 GB? I can't find a good web page to refer you to, but here's a quick summary of what's available. Capacity and transfer rate are native; if your data is 2:1 compressible, double both columns. Drive Capacity Xfer rate (GB) (MB/Sec) DLT 406 sDLT110-300 11-36 LTO 100 15 LTO2200 30 AIT3100 12 SAIT1 500 30 -- Dan Nelson [EMAIL PROTECTED] ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Tape backup using a OnStream SC-30
On 6/4/2003 12:33 PM, Mark Pearce wrote: Hi Hi Mark, I am having trouble trying to backup data using an OnStream ADR drive. I have read the dump, sa, sr, tar man pages and have googled as well, but am still having no joy. I have the following results: dmesg: sa0 at ahc0 bus 0 target 4 lun 0 sa0: OnStream SC-30 1.05 Removable Sequential Access SCSI-2 device sa0: 10.000MB/s transfers (10.000MHz, offset 7) camcontrol devlist -v: scbus0 on ahc0 bus 0: OnStream SC-30 1.05 at scbus0 target 4 lun 0 (pass0,sa0) at scbus0 target -1 lun -1 () scbus-1 on xpt0 bus 0: at scbus-1 target -1 lun -1 (xpt0) [09:38 AM [EMAIL PROTECTED] dev]# /sbin/dump -0uan -f - /data1 | gzip -2 |dd of=/dev/sa0 DUMP: Date of this level 0 dump: Wed Jun 4 09:44:07 2003 DUMP: Date of last level 0 dump: the epoch DUMP: Dumping /dev/ad0s1h (/data1) to standard output DUMP: mapping (Pass I) [regular files] dd: /dev/sa0: Invalid argument [09:56 AM [EMAIL PROTECTED] dev]# tar c /data1 tar: /dev/sa0: Cannot open: Invalid argument tar: Error is not recoverable: exiting now I am at my wits end, I seriously need to get this backup working. I have found some reports that the SCSI adaptor, using the aha78xx driver coupled with this OnStream drive might be incompatable. Either that or I am doing something wrong, please help. No, you don't do sth. wrong. Onstream did but didn't tell it it's customers before the buy. The produced streamers with an SCSI interface but didn't respect the SCSI streaming access commands, but implement an own command set. You can do some things to get it work: 1) Port the linux driver to FreeBSD 2) Use vmware to run either linux or windows which may grant access 3) Use another streamer 4) Use another backup medium. just like cdr Jens ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Tape backup using a OnStream SC-30
On 6/4/2003 12:47 PM, Mark Pearce wrote: Hi Jens Hi Mark, Thanks for your reply. Do you have any idea what tape drives are best for the FreeBSD platform as I have no intention to changing my clients server to Linux. I know there are almost none listed on the hardware lists. At first: Please ever send at least a carbon copy to the list you've asked first. This have 2 reasons: 1) The list is archived and any later similar question could easily be answered by searching the archives. 2) The replyer may not be able to help you further than (s)he already did. Second: Sorry, I don't know. Nearly every big manufacturer should do. The new onstream streamer, for example, do. But I'm disappointed by onstream, so if I were you, I would use another manufacturer, eg. IBM, HP, ... Searching the archives or ask google may help. Thanks Mark Regards, Jens ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Tape Backup
On Mon, Dec 16, 2002 at 11:33:11AM -0500, Jerry McAllister wrote: If your usage justifies the cost, you might want to consider DLT or LTO type drives. They handle the load with less failure and higher capacity and data rates. I'm using Sony AIT-2 and it works great. The benefit of using AIT is that you don't need to clean your tape drive at all, and it also in a continuous development with AIT-3 has been launched (100/200 capacity). To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message
Re: Tape Backup
On Mon, Dec 16, 2002 at 11:33:11AM -0500, Jerry McAllister wrote: If your usage justifies the cost, you might want to consider DLT or LTO type drives. They handle the load with less failure and higher capacity and data rates. I'm using Sony AIT-2 and it works great. The benefit of using AIT is that you don't need to clean your tape drive at all, and it also in a continuous development with AIT-3 has been launched (100/200 capacity). Yah, we have several AIT systems here too and are having pretty good luck with them too - though, I can't support the NEVER have to clean the tape drive. Rarely, yes, but Never, no. jerry To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message
Re: Tape Backup
I am running Freebsd 4.6 and my dds-2 tape backup drive just died on me. I am interested in moving up to a bigger capacity drive so does anyone have any recommendations? I am not interested in anything high end, this is just for my system at home. I was looking at the dds-3 drives, but before i went out and bought one, I would like opinions and or recommendations. Thanks in advance. We have DDS-3 drives on a number of systems and mostly they work well. We have a couple of systems that cannot be written/read with dd or cp which causes us a problem and we haven't discovered a reason yet. Those are all on Dell systems, but I don't remember the drive model[s]/maker[s] at the moment. Interestingly enough, tar will still write/read them. Besides that problem, keep in mind that DAT, though a nice format for light duty work, doesn't seem to be designed to handle really heavy demand work - nearly 24/7 backup work of multiple systems or whatever. jerry -- Peter Erickson To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message
RE: Tape Backup
I've never ran one on FreeBSD, but I've used several DDS-3 drives of all kinds of flavors. I've had some problems with some Seagate ones, but aside from that, I've had no problems. The only thing I'd keep in mind, and that I've experienced is that the DDS-3 tapes are not designed for heavy use. From what I've done, using 5 tapes a week, one a day, I end up throwing the tapes out (after destroying them) after about 4-6 months...which is fairly average from what I've heard. Also, a cleaning tape, though I never believed it till I saw used it, increased the life of the tapes slightly, and I assume it also extends the life of the drive...but I've never seen one croak, so I don't know. Hope I helped, --Brian -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Peter Erickson Sent: Saturday, December 14, 2002 7:57 PM To: [EMAIL PROTECTED] Subject: Tape Backup I am running Freebsd 4.6 and my dds-2 tape backup drive just died on me. I am interested in moving up to a bigger capacity drive so does anyone have any recommendations? I am not interested in anything high end, this is just for my system at home. I was looking at the dds-3 drives, but before i went out and bought one, I would like opinions and or recommendations. Thanks in advance. -- Peter Erickson To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message
Re: Tape Backup
I've never ran one on FreeBSD, but I've used several DDS-3 drives of all kinds of flavors. I've had some problems with some Seagate ones, but aside from that, I've had no problems. The only thing I'd keep in mind, and that I've experienced is that the DDS-3 tapes are not designed for heavy use. From what I've done, using 5 tapes a week, one a day, I end up throwing the tapes out (after destroying them) after about 4-6 months...which is fairly average from what I've heard. Also, a cleaning tape, though I never believed it till I saw used it, increased the life of the tapes slightly, and I assume it also extends the life of the drive...but I've never seen one croak, so I don't know. Your experience sounds about like ours. I think we get just a little more average life out of a cassette than you indicate, but not a large amount. Actually, we've used some DDS-4 too with pretty much similar results. One thing though, the cleaning tape may increase the life of tapes, but frequent use can reduce the life of a drive. The cleaning tapes can cause increased head wear. We recommend only using them when really needed - write errors show up - and not on a regularly scheduled basis. But, this is true of DDS-2 and even original DAT. Keeping your drive and storage environment clean and as free of dust as possible is a more important thing to improve tape and drive longevity, I think. If your usage justifies the cost, you might want to consider DLT or LTO type drives. They handle the load with less failure and higher capacity and data rates. jerry Hope I helped, --Brian -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Peter Erickson Sent: Saturday, December 14, 2002 7:57 PM To: [EMAIL PROTECTED] Subject: Tape Backup I am running Freebsd 4.6 and my dds-2 tape backup drive just died on me. I am interested in moving up to a bigger capacity drive so does anyone have any recommendations? I am not interested in anything high end, this is just for my system at home. I was looking at the dds-3 drives, but before i went out and bought one, I would like opinions and or recommendations. Thanks in advance. -- Peter Erickson To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message
