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ONStream tape drives -->Re need suggested tape drivereplacement for Exabyte 8505 on OS 5.0.0C - plug and play,please!

There are TWO requirements for SCSI tape drives to successfully operate under Unix operating systems: 1) They have to support the SCSI communications spec. (obviously). 2) They have to support ONE of the SCSI TAPE drives specs. (this is not so obvious).

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Value of bit-level verifying a backup  
- You'd probably be surprised how often a bit level verify proves useful. I receive backup status email for several of my clients, so I can tell you that bit-level verification "failures" are not all that uncommon. -

SATA RDX backup cartridge report for BackupEDGE   2011/11/23 BillMohrhardt
- I have been testing an internal SATA RDX drive, made by Quantum, in an IBM x-series 226 server with dual 3.0 Ghz CPU's, 3 GB of RAM, and dual 73 GB SCSI drives configured as a simple RAID 1. The Operating System is Red Hat Enterprise Linux 5.3, Microlite BackupEDGE version 03.00.03 with the RDX cartridge configured as a file system partition. I modified the retention time to be only 3 days, as I was backing up to the same cartridge, and wanted to verify that the program would automatically delete the oldest archive to make room. When we have a cartridge for each workday, I will extend that back out to 2 weeks. -

Auto Edge archive removal script  
- The way I wanted Edge to work, was just like the days when we backed up to Tape. We would pull Master backups each night, label the tapes M-F, and take a SAT tape off-site for an extra layer of protection. When Monday rolled around, the new backup would replace the old Monday backup, rinse, lather, repeat. This changed when we upgraded to Edge 3.x, and started using the NAS. Once we had multiple servers with multiple jobs backing up to the same resource, and not having enough free space on the NAS because backups were piling up, I had to resort to manually deleting things (through edgemenu) on the NAS to free up space. This got old rather quickly, as I had to look down the long list of backup jobs, and determine which ones could be deleted. If I missed one day, the NAS would fill up, and backups would fail. -

Take Control of Mac OS X Backups  
- Although there is OS X specific material, this is actually good for any OS, not only Mac. -

A Gentle Reminder About Backup  
- This will backup to just about anything - tape, cd, dvd, NAS, ftp sites. -

Microlite BackupEDGE 2.03  
- It's not easy to put together a backup andrecovery package as complete as BackupEDGE -

Backing up Virtual Machines  
- At that moment, it's actually working like a hard link: it is pointing to exactly the same disk blocks as the original file. -

More backup, please  
- There really is no such thing as too much backup - and you need to test, test test to be sure it can restore! -

A Tale of Backup  
- I've had my share of customers who won't make backups. I've had customers who have left the same media in the backup device for years on end.. No matter how easy you make it some people won't do backups -

Backup mistakes you might be making  
- How we lost all backups through a long series of entirely avoidable mistakes. -

Flyback needs more than ease of use  
- Time Machine is not "just" rsnapshot. First, on the tech side, it uses hard links for directories and metadata that identifies a files lineage. It's also much faster than plain old rsnapshot. -

Sell that removable media stock  
- Fast and unlimited remote storage signals end of backup -

Legacy ISA  
- I found a professed "competent" student at the local university who spent a couple of hours destroying the setup in one of the machines. We now have one machine working.. -

Tar wild card interpretation  
- Wildcards in GNU tar: We know have a tar file (test.tar) containing the problem file. Let's try restoring it as she did: -

Backing up Windows machines using rsync and ssh  
- Rsync and SSh aren't just for Unix and Linux: Windows and Mac can use these to backup data. -

Backing up with rsync  
- Rsync copies data to another directory, another disk volume, or a another machine. It only copies what needs to be copied. -

Virtual Tape  
- Virtual tape does just what you'd think: a backup thinks it's writing to tape, but in reality the data is going elsewhere. It may still end up on tape eventually, but in the meantime it's heading for disk, local or otherwise. -

Deep Backup  
- I noticed a recent thread about backup over at comp.os.linux.misc where someone asserted that the value of backups fades very quickly with time, and that there is no value in long term backups -

Backup verification  
- In one situation, the verification caused us to look at who was logged in during the backup window and ultimately led to a discovery of embezzlement. -

LOD Communications, Inc.
SCO 5.0.7 DVD-RAM usage  
- I'd suggest using Microlite or Lonetar for this. You aren't really verifying with that anyway if you are using stock cpio and the Supertars are far better products - see for example the recent review of Edge at /Reviews/backupedge21.html (similar features are available in the Lonetar product). -

- Subversion describes itself as "a compelling replacement for CVS" but is not just for CVS users. -

Using Rsnapshot   2011/02/14 OscarGonzalez
- Rsnapshot is a Perl script that uses rsync to create incremental backups -

BackupEDGE 2.1   2011/02/18 TonyLawrence
- Backup Edge version 2.1 (old version, please see more recent reviews for more accurate information) -

Speed of IOMEGA REV with Microlite BackupEDGE  
- Blog # 1231 Speed of IOMEGA REV with MicroliteBackupEDGE -

Another RAID failure  
- Sometimes the worst part of a raid failure can be working with people. The hardware and software usually makes sense; people may not. -

Cloning a directory structure without copying files  
- Blog # 1124 Cloning a directory structure without copyingfiles -

Using rsync for machine replication?  
- Yesterday I was at a client site where they explained they wanted to keep a stand-by server up to date and ready to take over in case of main system failure. Fine, lots of people do that, and currently they are doing it by restoring backups every morning. What they were asking about was using rsync or some other mechanism to keep the machines more current. -

IOMEGA REV Drive with Fedora Core 2  
- Unfortunately, that was a system I wanted to use the REV on. -

- Concurrent Versions Systems. The general standard for version control. Allows multiple people to work on a project by tracking changes and controlling access. Primarily used for code, but there's no reason it can't be used for any project where multiple people modify files. -

Large USB drives  
- Where did these come from? I guess I've been sleeping too much again, because this caught me by surprise: 4GB USb 2.0 Pen Drive Flash Drive. The pricing doesn't thrill me, but the idea sure does. -

- The most common answer to any question that involves network backup: http://www.amanda.org/ I still prefer Microlite Edge, though. -

Transferring to new hardware with a Supertar  
- Transferring iUnix and Linux to new hardware with a Supertar is easy, but extra work is needed for some hardware changes. -

Recovering System after upgrade  
- What happens when an upgrade appears to be fine, but a few days later you find that there is actually a serious flaw? -

Neglect and Misunderstanding of Backups  
- There's something about 'over-write' that is not being understood there. -

- Compared to Windows, the world of Unix backup is extraordinarily rich. You have many tools available, from basic to quite complex and extensive. Knowing what tool to use is a challenge in itself. -

Reading SCO tapes on Linux  
- Reading SCO tapes on Linux requires being aware of hardware compression and tape block sizes. -

Tape Autoloader on 2.4 Linux  
- Rob Fantini explains how he got an autoloader tape unit working on RedHat Linux This info may not be clearly written, but shows what I did to get autoloaders working on 2.4 linux. -

Linux|Unix Logical Volume Manager (LVM) on Software RAID   2011/01/07 TonyLawrence
- Logical Volume Manager is now included with most Linux distributions. The RedHat 8.0 installer even allows you to create LVM volumes during initial install. LVM offers capabilities previously only found in expensive products like Veritas. If you plan on using LVM, I really recommend doing so on a RAID system, either hardware or software -

3.2v4.2 System Recovery  
- Using a Linux system to recover data from a badly crashed SCO Unix 3.2v4.2 machine. As a common cause for that is simply a missing or damaged inittab, I thought we might be able to fix it by booting from floppies and doing a manual repair. Unfortunately, there were no emergency boot floppies. -

Tape Drive or CDROM Not Found  
- SCO tape drive not seen troubleshooting solutions, using and interpreting sconf, vs. /etc/conf/cf.d/mscsi. -

Why not differential backups?  
- Differential or Incremental backups always seems like a great idea to people who haven't experienced the negative aspects. -

Panasonic LF-D201U DVD-RAM  
- DVD-RAM is optical storage that: * Is relatively inexpensive * Holds a large amount of data (4.7GB per side at this writing) * Can be re-written hundreds of thousands of times * Has an expected media life of 30 years * Is bootable * Is really ideal for small system backup -

Review of Microlite BackupEDGE SS  
- Microlite BackupEDGE SS Release 01.02.00 (old version, please see more recent reviews for more accurate information) -

Bill Vermillion's Tape Articles-Part 5  
- This section will talk about the evolution of tape backup systems for small computers, and discuss the fundamentals of rotating head tape recorders. In the next segment I'll try to go into more detail on the difference between each of the current types of data backup systems. -

Bill Vermillion's Tape Articles-Part 4, QIC Tape Format  
- This section will discuss the QIC method - and it's probably a good starting point as it's fairly easy to understand. The QIC [Quarter Inch Cartridge] is the data cartridge you have seen which measures about 3" by 5", and with a metal bottom plate. This is a very rugged design and it's more complex mechanically than you'd notice with a casual glance. -

Bill Vermillion's Tape Articles-Part 3, Storage Media  
- Tape Articles- Storage Media: This is the third installment of a series on magnetic devices and media used in computer systems. In this article we will look at the storage media, primarily tape and disk, and how signals are represented on that media. To better understand this I will compare the differences in audio tape, as most people are most familiar with that, and digital tape. -

Bill Vermillion's Tape Articles-Part 2, Recording and Playback Heads  
- A recording head is a horseshoe magnet taken to the extreme. The difference is that the open end of a recording head is extremely small. The easiest way to understand a very basic recording head is take a ring of metal, and cut a very small slot through it. Then we wrap some turns of wire around this ring on the side opposite the slot. Connect the wire it to an electron source, we will have a magnet with the magnetic field focused at that very small gap opposite the coil of wire. -

Bill Vermillion's Tape Articles-Intro- Magnetism and Electrons  
- To make sure that everyone has the level of knowledge to understand this, I'll start by explaining the basic fundamental concepts that relate to this technology. -

A Potential Disaster Using CPIO  
- The biggest error of my life occurred when I accidentally entered two consecutive periods {..}. -

SCO_OSR5 Tape Autoloaders  
- Generic Tape Autoloader Configuration Information forSCO OpenServer and Microlite Edge -

Lone-tar Version  
- This is a review of an ancient backup product and is only left here for historical purposes. -

Review of Microlite BackupEDGE Version 7  
- Microlite BackupEDGE 01.01.07 review (old, old version - see more recent reviews!) -

Super Tars  
- General overview of Unix/Linux supertar backup software, which provide backup flexibility and bare metal recovery. -

Using Tapes and tape drives  
- This is an old article about SCO Unix tapes and tape drives and is only left here for historical purposes. -

Using Unixware 7 Tape Drives  
- Unlike Openserver, you don't specifically add SCSI tapes. If the tape is out there (controller configured, of course), it will automagically get added to the kernel. -

linux save restore mbr master boot record lilo -->Savin gand Restoring an MBR  
- Using DOS debug to read MBR record in an emergency: You should make a backup copy of your MBR on a bootable floppy disk before installing Linux and then again after installing Linux. -

corrupt header This does not look like a tar archive skipping to next header archive contains obsolescent base-64 headers  
- Tar files can be damaged. This Perl script can fix some corrupt tar archives and recover data. -

(SCO Unix)Is tar/cpio a good backup program?  
- (SCO Unix) tar is not; cpio is, to some degree. tar will not back up things like device nodes (and, prior to OpenServer Release 5, it will also not back up empty directories), so a tar backup will not catch anything in /dev, for example, and you will find your device nodes missing when you do your restore. cpio will catch these things. -

(SCO Unix)How can I back up to a tape drive on another machine?  
- (SCO Unix) How can I back up to a tape drive on another machine? -

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