Welcome to the Demo Version of the IBM DualStor Backup Program for DOS Version 2.0! All operations of the DualStor for DOS program are enabled with this Demo version EXCEPT the Restore operation. You can Select the Restore operation but after you enter the Restore parameters, you will receive a message indicating the Restore operation is disabled. To install this Demo version, insert the DualStor for DOS diskette in a 3.5" floppy drive and enter 'x:setup' where x=your 3.5" floppy drive designator (for example, a:setup). After DualStor for DOS is installed, enter 'dualstr' from the 'x:\DUALSTOR\' command prompt to start the DualStor application. We hope you like DualStor! If you would like to purchase DualStor for DOS you can call Options by IBM at 1-800-426-7299 (US Only) or IBM Direct at 1-800-465-7999 (Canada Only). DualStor for DOS and DualStor for Windows versions 2.0 are packaged together. You also may be interested in purchasing the DualStor 450 Tape Drive which can store up to 450 meg of data when using a Sony QIC-wide tape QW5122XL and level 2 compression (data dependent). DualStor part numbers: 11H1594 DualStor for DOS/Windows version 2.0 (software only) 11H1504 DualStor for DOS/Windows version 2.0 and DualStor 450 Tape Drive (hardware, software, & 1 Sony QIC-wide QW5122XL tape cartridge) 11H1568 DualStor for OS/2 version 2.0 (software only) 11H1505 DualStor for OS/2 version 2.0 and DualStor 450 Tape Drive 11H1571 Upgrade from DualStor for DOS/Windows 1.0x 11H1549 Upgrade from DualStor for OS/2 1.0x The following is the README that ships with the product. ------------------------------------------------------------------- TABLE OF CONTENTS 1 - DualStor Execution 2 - DualStor and DOS 3 - DualStor Job (Parameter) Files 4 - DualStor and Networks 5 - Compatibility with Other Software and Hardware 6 - DualStor 2.0 Changes from Versions 1.x 7 - Miscellaneous 8 - Errorlevel Return Codes for Batch Files ---------------------------------------------------------------------- 1 - DUALSTOR EXECUTION ---------------------------------------------------------------------- ---------- *Incremental vs. Differential Backup Methods* The only difference between Incremental and Differential backups is the Incremental method will reset the archive bits and the Differential does not reset the archive bits. Both methods will back up the same files from your hard disk based on the archive bit. Checked files that have the archive bit set on will be backed up. ---------- *Printing in DualStor* At this time, DualStor can print files to disk, but not to a printer. To work around this limitation, select Print from the File menu, select OK, and name the file you want to save on disk. At a DOS prompt, type PRINT FILENAME. For more information on printing from the DOS prompt, see your DOS documentation. ---------- *AutoTape Command Prompt* When entering a command in the AutoTape command box, be sure to use the extension of the file being used so that the operation will work properly. For example: DUALSTR.EXE FULL-CDE.TPF ---------- *~BEX Files* Files that begin with ~BEX are temporary files used by DualStor. If you see one of these files when DualStor is not running, you can delete them. ~BEX files will be found either in your TEMP directory or your DualStor directory. ---------- *Ignoring Drives in DualStor* You can tell DualStor to ignore specified drives, if you have non- existent drives that are creating error messages or speed problems when you run DualStor. For example, if you have a computer with a single floppy drive (drive A:), you can have DualStor ignore your non-existent drive. You may also want to use this setting to tell DualStor to ignore both A: and B: drives so that they do not appear in your DualStor Drives window. The default Drives selection would then always be your C: drive. To do this, add the following command to the DUALSTR section of your DUALSTR.INI file (located in your DUALSTOR directory). IRSKIPDISK=ab You can list as many drive letters as you want, putting no spaces between them, for example, IRSKIPDISK=abcd (to ignore your A:, B:, C:, and D: drives). You can achieve the same thing by putting a SET statement in your AUTOEXEC.BAT file. The syntax is: SET IRSKIPDISK=abcd ---------------------------------------------------------------------- 2 - DUALSTOR AND DOS ---------------------------------------------------------------------- *DualStor in the Windows and OS/2 Presentation Manager Environments* Do not attempt to run DualStor from a DOS window or full screen in either Windows or OS/2. If you do so, the program will either halt or run very slowly. You can purchase a DualStor product that is designed specifically for your operating environment. Consult your dealer for information about DualStor for Windows or DualStor for OS/2. ---------- *DOS Memory Management and DualStor* To get the best performance with DualStor you should use Upper Memory Blocks (UMBs). Refer to the chapter, 'Optimizing Your System' in your DOS documentation for information on using UMBs. If you have UMB enabled and you are experiencing memory management problems with DualStor for DOS try entering the following command at the DOS prompt before starting DualStor. SET NOUMBSUPP=1 You could add the following statement to your AUTOEXEC.BAT instead. SET NOUMBSUPP=1 ---------- *Disk Caching and DualStor* You will also find that DualStor will run more quickly and smoothly when there is a disk caching program installed on your system. Disk caching improves performance by storing parts of the program in the computer's memory rather than only on disk. Most users now load a disk cache when their computer starts up. A disk cache program may be included with your DOS product and there are a number of third party programs as well. If you have more than 640K memory available, we recommend that you use part of this memory for a disk cache. Note: DualStor does not require the use of a disk cache. However, if you do not use disk caching, you may notice that DualStor takes longer to load than expected. ---------- *Setting the TZ Environment Variable The TZ environment variable is not compatible with either DualStor for DOS or Windows. Having the line 'SET TZ=' in your AUTOEXEC.BAT file will cause the time based functions in DualStor to be inaccurate (ex. elapsed time will be 00:00:00 and the transfer rate will be incorrect). It is recommended that the TZ set variable be removed from AUTOEXEC.BAT before performing a backup or restore. If you did create backup sets with TZ enabled you will need to 'SET TZ=' again before you can recover your data with DualStor. ---------------------------------------------------------------------- 3 - DUALSTOR JOB (PARAMETER) FILES ---------------------------------------------------------------------- *Using Parameter Files from PS2Tape and PMTape* If you have parameter files created for PS2Tape or PMTape, they will work with DualStor by copying them into the DualStor directory. Parameter files are now called job files and can be created more easily using options in the DualStor Jobs menu. Be sure that your existing parameter files have names different from the five job files created during DualStor installation (FULL.TPF, DIFFR.TPF, INCR.TPF, REST.TPF, and TAPEINFO.TPF), so you don't overwrite any of them. Because of enhancements to job file capabilities, some of the syntax for job file commands has changed. Your existing parameter files will still run, but first you should review Appendix B in your User Manual for detailed information on the new job file command syntax. ---------- *Logging a DualStor Operation* All DualStor operations, including operations launched from job files, are logged in a DualStor Session Log. If you want to create a log file in a specific location with a specific name, open the job file using a text editor and add the following command: /l log_name The /l command is a job file "option" available in backup and restore modes. The log file will be saved in your DualStor directory or you can specify a full path. For example: /l c:\bulogs\backup.log The log file will list files that were included and/or excluded from the operation depending on the logging settings specified in DualStor. DualStor creates the log file after you exit the program. See Appendix B in the DualStor User Manual for more information on job file editing. ---------- *Mode Variables* There is only one mode variable allowed in each Job file (i.e. *.tpf) Mode variables are !backup, !restore, !init, !util, and !shortcuts. ---------- *Encryption and Password Options* The Encryption and Password options are not available for use with Job files. Therefore, if you check the Encryption option in your Settings pull-down, Backup defaults window it will not be enabled (it will be grayed out) when you save a Job file. ---------- *Date Specification* When using the '/d' option in a DualStor Job file you must have a space on both sides of the date_spec value. ---------------------------------------------------------------------- 4 - DUALSTOR AND NETWORKS ---------------------------------------------------------------------- *Novell Volume Restrictions* Novell volume restrictions will only be backed up if you use QIC tapes with the DualStor file system or you use Servo (AccuTrak) tapes. Volume restrictions are not backed up using QIC tapes with the QIC-Compatible file system (QIC-80 and QIC-113). See your DualStor User's Guide for more information on file systems. ---------------------------------------------------------------------- 5 - COMPATIBILITY WITH OTHER SOFTWARE AND HARDWARE ---------------------------------------------------------------------- *Intel Premiere II PCI Motherboard* If you have a Pentium system with the Intel P90 motherboard (Premiere II PCI, codename Plato) and you are experiencing slow transfer rates, 'DMA Overruns', or excessive shoe-shining (tape spins backward and forward continuously) when performing DualStor backup operations, you should first call the Intel Bulletin Board at 916-356-3600 and search on 'BIOS' for information that could resolve these problems. ---------- *Removing Other Software Device Drivers* If you were using another tape backup software product previous to DualStor for DOS you should remove any of its device driver entries from your CONFIG.SYS before trying to execute DualStor for DOS. ---------- *DMA Channel 2* Prior to executing DualStor for DOS make sure you have no entries in your CONFIG.SYS that are using DMA Channel 2. ---------- *National Semiconductor Floppy Controller DP8473* If the DualStor for DOS software detects this floppy controller on your system, the DualStor software will use a maximum transfer rate of 500Kbps (vs. 1Mbps). This is due to this floppy controller not containing a FIFO. ---------- *Compatibility with QICstream* QICstream backup software cannot read DualStor backup sets that are compressed. ---------- *Compatibility with Colorado Memory System Backup Software* CMS's Colorado Backup software cannot read DualStor backup sets that are compressed. ---------- *4100MC and IBM Model 9577* The 4100MC controller card in an IBM Model 9577 will cause DualStor to work improperly. To avoid this problem, connect your tape drive to your computer's floppy controller rather than the 4100MC card. See your tape drive's installation guide for more information. ---------- *SCSI Hard Drives and the Adaptec 1540 Controller* If you are using: * a tape drive with a floppy controller AND * a SCSI hard drive with an Adaptec 1540 controller, you must set the IROPT environment variable. To set IROPT, enter the following command at the DOS prompt before you start DualStor: SET IROPT=Y Note that the Y must be in upper case. You may include this command as part of your AUTOEXEC.BAT file. ---------- *SpeedSTAR VGA Monitor Problem* If you are using DualStor with a SpeedSTAR VGA monitor card that has a DBIOS version 4.23, you cannot run in 43/50 line mode and graphics mode simultaneously. Select Font from the View menu, check the graphics mode check box, and leave 43/50 line mode unchecked. ---------------------------------------------------------------------- 6 - DUALSTOR 2.0 CHANGES FROM VERSIONS 1.x ---------------------------------------------------------------------- *Default Backup Set Names* If you mark specific directories and/or files for backup as opposed to marking an entire hard drive, the default backup set name will be "Partial-X" where 'X' is the drive designator of the hard drive on which the directories and/or files marked for backup reside. DualStor versions 1.x used a default backup set name of "Full-X". ---------- *Column Headers* Column headers were added to the tops of the file windows. These column headers identify the column by name (ex. "Name", "Date", etc.). The columns can be sized by dragging the separator line between each column (the separator line to the left of "Name" is not enabled). Click the left mouse button on any column to sort the entire list by that column. ---------------------------------------------------------------------- 7 - MISCELLANEOUS ---------------------------------------------------------------------- *Verify after Backup* It is a good practice to check the 'Verify after Backup' option on when selecting your Backup Parameters. This will cause DualStor to perform a byte-by-byte comparison between the data backed up on the tape and the data on the hard drive increasing your confidence in the backup. It may, however, double the time of your backup. If you want to set this option on permanently for all of your backups, simply select the Settings pull-down, Backup..., and check the 'Verify after Backup'. ---------- *Passwords* If you are using the QIC file system with the Password option, only 8 characters are significant even though DualStor will accept 15 characters. All 15 characters are significant when using the DualStor file system. ---------- *Hardware Compression* The DualStor User's Guide shows a Hardware Compression radio button on the Backup Set Parameters windows but you will not see it in the application itself as DualStor does not support any tape drives that support Hardware compression. ---------------------------------------------------------------------- 8 - ERRORLEVEL RETURN CODES FOR BATCH FILES ---------------------------------------------------------------------- You can use ERRORLEVEL to check the return codes of a DualStor tape operation if you are using job files and batch files. The values returned by DualStor in ERRORLEVEL are as follows: 0 = No errors, successful completion 1 = No tape cartridge in drive 2 = Tape is full, cannot write 3 = Tape is write protected 4 = Mount failed or incompatible tape 5 = Invalid command line arguments 6 = Fatal disk error 7 = Not enough memory available to run 8 = No tape drive present 9 = User aborted operation 10 = Fatal tape error 11 = Critical verify failure, backup set deleted 12 = Internal software error 13 = Disk full on restore 14 = Disk full in \temp directory 15 = No files selected 16 = DUALSTR.MSG file not found 17 = Non-critical verify warning (Verify miscompares seen in Session log) The following line is an example of the contents of a job file to retension the tape first. The 'Do not wait for errors' option is set on. Let's call the job file RETEN.TPF: !util /w 0 /r The following line is an example of the contents of a job file to backup the C: drive. It will scan checked files, not wait on error, name the backup set and backup the C: drive. Let's call the job file MYBACKUP.TPF: !backup /m /w 0 /n "MYBACKUP" /s C:\*.* The following DOS batch file is an example of how you might use the DualStor return codes and the above DualStor job files. Let's call the batch file TAPEOPS.BAT: rem --------Beginning of Sample Batch program------------------- @echo off rem rem Log Retension tape start message to TAPEOPS.LOG file echo Execute DualStor job file to retension tape >>.\tapeops.log DUALSTR reten.tpf rem next statement checks for errorlevel = 1 or greater if errorlevel 1 goto checkrc echo Retension tape successful >>.\tapeops.log rem rem Log Backup start message to log file rem Execute DualStor job file to backup C: drive >>.\tapeops.log DUALSTR mybackup.tpf rem next statement checks for errorlevel = 1 or greater if errorlevel 1 goto checkrc echo Backup of C: successful >>.\tapeops.log goto end rem rem Check which error DualStor found and go process the error :checkrc if errorlevel 16 goto nomsgfl if errorlevel 15 goto noflsckd if errorlevel 14 goto diskfull if errorlevel 13 goto diskfull if errorlevel 12 goto softerr if errorlevel 11 goto verfyerr if errorlevel 10 goto tapeerr if errorlevel 9 goto userabrt if errorlevel 8 goto nodrive if errorlevel 7 goto memerr if errorlevel 6 goto diskerr if errorlevel 5 goto invcl if errorlevel 4 goto inctape if errorlevel 3 goto wptape if errorlevel 2 goto tapefull if errorlevel 1 goto notape rem rem Here is examples for a few of the return codes: rem :inctape echo Either the mount failed or the tape is incompatible, echo Check the tape condition and restart TAPEOPS.BAT pause goto end rem :notape echo There is no tape in the drive, please insert a tape and echo restart TAPEOPS.BAT pause goto end rem :end echo End of TAPEOPS.BAT >>.\tapeops.log rem ------------End of Sample Batch program--------------------- TAPEOPS.BAT, RETEN.TPF, and MYBACKUP.TPF would all reside in the directory where DualStor is installed. The above example would be executed by typing 'TAPEOPS.BAT' on the command line at the DualStor directory DOS prompt (\DUALSTOR\TAPEOPS.BAT).