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frequently asked questions

"What is the difference between NWPA and the old DDFS ".dsk"

architecture, and which architecture is supported by which versions of

NetWare?"

contents of this section

related topics

novell's policy on new systems

rationale

the layered driver approach

tape class drivers

NWPA minimum recommended
patch level

dynamic loading / unloading of
drivers

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This topic is available in English only

novell's policy on new systems

As of Jan 1st 1999, Novell’s policy is to only certify new systems if they are
compliant with the NWPA driver architecture (that is, SCSI controller drivers with
the ".ham" file extension, and tape and ASPI drivers with the ".cdm" file
extension).

The NWPA driver architecture can be used with NetWare 3.12 / 4.11, (providing
the appropriate patches have been loaded - see

http://support.novell.com/misc/patlst.htm

) and with NetWare 3.2 / 4.2 and 5.x.

The NWPA driver architecture replaces the DDFS monolithic ".dsk" driver
architecture used with NetWare 3.x and NetWare 4.x. The DDFS driver
architecture is not supported by NetWare 5.x.

rationale

Novell introduced NWPA with NetWare 4.x, as an alternative to the DDFS driver
architecture (which originated as a way of controlling disk drives - hence the driver
extension ".dsk"). It enabled NetWare to easily and dynamically support a wide
range of peripheral devices - something not so easily achieved with the
"monolithic" DDFS architecture.

the layered driver approach

NWPA has been designed from the ground-up to dynamically support many
different devices. It uses a layered driver structure, as used in many other
operating systems. This allows different abstractions of devices to be used at
various layers in the driver stack.

For example, for SCSI tape drives, at the lowest level would be (one or more)
SCSI Host Bus Adapter (HBA) driver(s). These drivers have the extension ".ham"
(standing for host adapter module). On top of these would be layered (one or
more) Tape Drive driver(s). These drivers have the extension ".cdm" (standing for
custom device module - in this case, a tape class driver).

tape class drivers

Tape Class drivers are mainly used by Novell’s own backup applications -
SBackup for NetWare 3.x / 4.x) and SBCON for NetWare 5.x. As with the DDFS
architecture, Independent Software Vendor (ISV) backup applications tend to use
the ASPI (Advanced SCSI Programming Interface) layer to communicate with
tape drives. Therefore, when using backup applications such as BackupExec and
ArcServeIT, the relevant ASPI layer driver must be loaded in place of the normal
tape driver. See the answer to the question

"How do I know what drivers (DDFS or

NWPA) I am using at the moment, and what drivers I need for running tape
backups?"

for further details.

Further services can be layered on top of the class driver modules, such as
NetWare 5’s Storage Management Services. This is used by NetWare 5’s built-in
backup application "SBCON", and by many other backup applications, to provide
media management abstraction. (Refer to the

"SBCON Quick Reference Guide"

for full details of Novell's SBCON backup application.)

NWPA minimum recommended patch level

The main component of NWPA is the NetWare Loadable Module "NWPA.NLM". If
your system has this module loaded, then it should support NWPA. For NetWare
versions up to 3.12, additional patches will be required before you can upgrade to
run NWPA. If you are using NetWare 3.x and 4.x you are advised to upgrade your
system to the patch level recommended by Novell’s "Minimum Patch List" at

http://support.novell.com/misc/patlst.htm.

The minimum recommended NWPA patch level for NW3.1x, 3.2 and 4.1x is
NWPA_UP.EXE, which can be found at the following location:

http://developer.novell.com/devres/sas/certinfo.htm.

For NW3.12 the NWPA_UP.EXE patch should be uncompressed in the
SERVER.312 directory. This also contains patch 312PTD.exe, which should be
uncompressed and applied following the instructions given in the accompanying
312PTD.txt file.

For NW3.2 all that needs to be done is to uncompress NWPA_UP.EXE in the
SERVER.312 directory

Note : NetWare 4.1x Support Pack 7, 4.2 and 5.x do not require this patch.

dynamic loading / unloading of drivers

NWPA supports dynamic loading/unloading of drivers, and will auto-load certain
drivers if it recognises supported devices. For example, once an HBA ".ham"
driver is loaded, if an operational tape drive is found on the SCSI bus that is
supported by the SCSI2TP.CDM (NetWare 3 / NetWare 4) or NWTAPE.CDM
(NetWare 4.2 and 5) tape device drivers, NWPA should auto-load the tape device
driver.

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"How do I know what drivers (DDFS or NWPA) I am using

at the moment, and what drivers I need for running tape backups?"

© 1999-2001, Hewlett-Packard Company

file:///C|/Documents%20and%20Settings/topher.COL-SPRINGS/Desktop/dltvs80%20manual/document/common/drivers_faqs/eng/nw_q1.htm [11/29/2001 8:35:19 AM]

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Содержание dtl vs80

Страница 1: ...el from Features and Specifications models DAT drive Choose your drive model from Features and Specifications monitoring utility See TapeAlert mounting rails See rail kits n narrow SCSI See Narrow and Wide Fast and Ultra SCSI non operating limits Choose your drive model from Features and Specifications non warranty service See Obtaining Service North American support numbers See Technical Support ...

Страница 2: ...do not have internet access click on the appropriate region from the side navigation bars for a list of contact numbers correct at time of printing hp service agreements HP offers a number of service agreements to meet your needs Contact your local dealer or nearest HP office for further information returning your tape drive for service Your HP Surestore tape drive comes with a 24 hour Express Exc...

Страница 3: ...internal C7400A ultrium 230 external C7401A ultrium 230 rack mounted C7470A argentina Telephone 0810 555 5520 from within Argentina 5411 4778 8380 outside Argentina Hours of operation 8 30 a m to 7 30 p m Monday through Friday Major Account Customers Telephone 54 1781 4061 0810 555 5520 5411 4778 8380 Horas de atención Lunes a Viernes de 8 30 a 19 30 h 54 1781 4061 brazil Telephone Great São Paulo...

Страница 4: ...eration 9 00 to 17 00 Monday through Friday Major Account Customers Telephone 30 0 1 68 96 503 4 or 30 1689 6411 hungary Telephone 36 0 1 382 1111 Hours of operation 8 30 to 18 00 Monday through Friday Major Account Customers Telephone 36 0 1 461 81 11 or 36 0 1 252 4505 ireland Telephone 353 0 1 662 5525 Hours of operation 8 30 to 18 00 Monday through Friday Major Account Customers Telephone 353 ...

Страница 5: ...505 3888 hong kong Telephone 800 96 7729 Hours of operation 8 30 to 17 30 Monday through Friday Major Account Customers Telephone 852 599 7777 800 96 7729 852 599 7777 india Telephone 91 11 682 6035 Hours of operation 9 30 a m to 5 30 p m Monday through Friday indonesia Telephone 62 21 350 3408 Hours of operation 8 00 a m to 5 00 p m Monday through Friday japan Telephone 81 3 3335 8333 Hours of op...

Страница 6: ...a and New Zealand HP warrants to you the end user customer that HP hardware accessories and supplies will be free from defects in materials and workmanship after the date of purchase for the period specified above If HP receives notice of such defects during the warranty period HP will at its option either repair or replace products which prove to be defective Replacement products may be either ne...

Страница 7: ...s Size Partitions example Disk 1 1 2 GB 1 partition Disk 2 1 8 GB 2 partitions Logical or Physical Mapping of Disks example Disk 1 C Disk 2 S SCSI bus configuration Host Adapter Make and Model example Adaptec AHA 2940 SCSI bus narrow or wide SCSI ID Device Termination Internal External Devices Bus Type 7 SCSI Controller EXAMPLE SCSI ID Device Termination Internal External Devices Bus Type 0 Hard d...

Страница 8: ...ubject to change without notice Hewlett Packard makes no warranty of any kind with regard to the material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Hewlett Packard shall not be liable for errors contained herein or direct indirect special incidental or consequential damages in connection with the furnishing performance or use of thi...

Страница 9: ...dicated host bus adapter is used for the tape drive A suitable adapter is available from HP as an accessory see Ordering Information Your computer must have a properly installed and configured SCSI host adapter or a SCSI controller on the motherboard SCSI 2 or SCSI 3 compliant with driver software that supports the HP Surestore DLT VS80 drive Check the server documentation for the specification of...

Страница 10: ...all the LED lights on the front panel are flashing at the end of the self test this indicates a fault has occurred If you have just installed the drive check the installation for loose connections and repeat the self test Try the troubleshooting procedures to determine what the problem is If the fault condition persists call for assistance resetting the drive The drive can be reset without powerin...

Страница 11: ...he media needs replacing or the heads need cleaning Try cleaning the drive with a DLT VS cleaning tape If after cleaning this indicator is illuminated again when you load a DLTtape cartridge it is probable that the DLTtape cartridge is causing problems Try a new DLTtape cartridge If this condition persists with other cartridges use HP Library and Tape Tools to help you diagnose the problem Off Cle...

Страница 12: ...Surestore DLT VS80 tape drive the loading sequence takes longer because the drive is writing reference tracks on the tape to unload a cartridge Internal drives External drives 1 Press the Eject button on the front panel or use your backup software During the unload sequence the Ready light flashes The drive completes any task it is currently performing winds the tape to the beginning and ejects th...

Страница 13: ...being transmitted from the system to the module or to any other module daisy chained on the same SCSI bus off line hot swap The SCSI IDs are controlled by the tape array not by the drives themselves so if you remove a drive and replace it with another the ID will not change If your system is running HPUX you should be aware of the following when removing a drive In Berkeley mode the tape position ...

Страница 14: ...s should be substantially less than this maximum Caution Ensure that only one label is located in the label area of the cartridge Never use non standard labels and never stick anything to the cartridge using cartridges Only use DLTtape IV cartridges in temperatures in the tape drive s operating range from 10C to 40C 50 F to 104 F and 20 to 80 relative humidity noncondensing If you expose cartridge...

Страница 15: ...dge is supplied with each tape drive Do not use swabs or other means of cleaning the heads The cleaning cartridge uses a special tape to clean the tape heads A cleaning cartridge can be used up to 20 times The cleaning cartridge includes a label with 20 small boxes printed on it Always place a check mark in a box each time you use the cartridge to clean the drive Replace the cleaning cartridge whe...

Страница 16: ...bleshooting FAQs SCSI configuration UNIX configuration ordering supplies installing drivers features and specifications Choose your model from the bulleted list below Internal Drives External Drives HP Surestore DLT VS80i tape drive HP Surestore DLT VS80e tape drive Removable Drives HP Surestore DLT VS80m tape drive 2001 Hewlett Packard Company file C Documents 20and 20Settings topher COL SPRINGS ...

Страница 17: ...sec assumes 2 1 compression burst transfer rate 20 MB sec Ultra wide SCSI 2 file access time from BOT 68 sec typical 135 sec maximum load to BOT 59 sec slightly longer for blank tapes unload from BOT 17 sec rewind time 68 sec typical 135 sec maximum rewind tape speed 4 1 m sec 160 in sec operating limits temperature 10 C to 40 C 50 F to 104 F humidity 20 to 80 RH non condensing 10 hr maximum opera...

Страница 18: ...aximum load to BOT 59sec slightly longer for blank tapes unload from BOT 17 sec rewind time 68 sec typical 135 sec maximum rewind tape speed 4 1 m sec 160 in sec operating limits temperature 10 C to 40 C 50 F to 104 F humidity 20 to 80 RH non condensing 10 hr maximum operating humidity rise maximum wet bulb temperature 25 C temperature gradient 11 C per hour across range operating altitude 0 15 to...

Страница 19: ...pression burst transfer rate 20 MB sec Ultra wide SCSI 2 file access time from BOT 68 sec typical 135 sec maximum load to BOT 59 sec slightly longer for blank tapes unload from BOT 17 sec rewind time 68 sec typical 135 sec maximum rewind tape speed 4 1 m sec 160 in sec operating limits temperature 10 C to 40 C 50 F to 104 F humidity 20 to 80 RH non condensing 10 hr maximum operating humidity rise ...

Страница 20: ...rmat drives Once a DLTIV data cartridge has been used in your DLT VS80 tape drive it has full compatibility if subsequently used in a DLT1 or another DLT VS80 tape drive However if subsequent used in other DLT format tape drives then they have a reduced compatibility as shown by the table below DLTtape IV cartridge written by DLT VS80 DLT 4000 DLT 7000 DLT 8000 SDLT Subsequent compatibility in oth...

Страница 21: ...ate A Support Ticket that generates detailed troubleshooting information for support calls if you are connected to the Internet you will be able to e mail this information directly to your Support Center Comprehensive Help that is topic sensitive should you need additional information for the screen currently displayed Updates and the latest versions of this software are available from our World W...

Страница 22: ... integrates all the features and functions of TapeAlert into HP s network management utility OpenView for Windows As a result tape drives can now be monitored and controlled remotely in the same way as other network elements such as disk drives and printers With TapeAlert for OpenView installed error messages flagged by tape drives are passed to the backup applications in the usual way The softwar...

Страница 23: ...wer cable into a power outlet on the same circuit as the host server or workstation 2 Plug the HP Surestore DLT VS80 external drive s power cable into a different power outlet problems during firmware update drive does not go into firmware update mode Possible cause Potential solution There is a DLTtape cartridge in the drive Remove the cartridge from the drive and repeat the update process The dr...

Страница 24: ...le on the floor near a busy walkway or near a door Avoid locations subject to sudden temperature changes such as near an outside door or window For specific environmental limits refer to the specifications for your tape drive model How many times can I use a DLTtape IV cartridge The recommended maximum number of passes over any single part of the tape is 1 000 000 In practical terms this is equiva...

Страница 25: ...st from the host bus adapter In this case you must ensure that any devices attached to the cable have termination removed or disabled Using a terminator attached to the last device on the bus For other external devices the terminator simply attaches to the spare SCSI connector of the last device termination power SCSI terminators require power to function which is supplied along the SCSI cable fro...

Страница 26: ...ring for UNIX Configuration HP Surestore Ultrium 230 Ultrium drive 200 GB HP Ultrium HP Surestore Ultrium 215 Ultrium drive 200 GB HP Ultrium HP Surestore DAT24 DDS drive 24 GB HP C1537A HP Surestore DAT 24x6 DDS autoloader 24 GB on each cartridge HP C1557A HP Surestore DAT40 DDS drive 40 GB HP C5683A HP Surestore DAT40x6 DDS autoloader 40 GB on each cartridge HP C5713A HP Surestore DLT 80 DLT dri...

Страница 27: ...u have not rebooted your system since attaching the drive you should run insf as follows before running mksf to create the device files sbin insf C tape If the system onto which the tape drive is being attached has a graphical interface the easiest way to create device files is to use the System Administration Manager Type sam from the command prompt while logged in as super user When the administ...

Страница 28: ...oot 4 The names of the device files can be interpreted as follows For Tru64 Digital UNIX 4 x Device files will be generated in the dev directory in the following format n rmtX D where n No rewind rmt Magnetic tape identifier X Instance number assigned to the drive by the operating system 0 is the first 1 is the second and so on D Density number mapping letter one of h l m or a h Compression on hig...

Страница 29: ...ss before select add a tape drive to set up the address From the pop up window select ost or Other SCSI tape drive as the tape drive you wish to change and choose connection addresses as appropriate 3 Select from the window change show characteristics of a tape drive 4 From the pop up window select ost or Other SCSI tape drive as the tape drive you wish to change Do not choose 4mm2gb 5 Change the ...

Страница 30: ...tem To install the appropriate driver and device files on a SCO system perform the following steps 1 Run mkdev tape as root 2 Select Configure SCSI tape drive 3 Select Install tape drive 4 Select the appropriate SCSI adapter 5 Select the appropriate SCSI bus 6 Select the Target ID to match the SCSI ID set on the back of the drive 7 Select the LUN to be 0 8 Enter y to update the SCSI configuration ...

Страница 31: ...n 40 4 60 4 60 5 60 3 3600 512 512 512 tpsc_default_dens_count tpsc_default_hwg_dens_names tpsc_default_alias_dens_names 0 0 0 0 0 u_char 0 DAT tape drives and autoloaders DATTAPE TPDAT 2 6 HP C A 0 0 0 MTCAN_BSF MTCAN_BSR MTCAN_APPEND MTCAN_SETMK MTCAN_PART MTCAN_PREV MTCAN_SYNC MTCAN_SPEOD MTCAN_CHKRDY MTCAN_VAR MTCAN_SETSZ MTCAN_SILI MTCAN_SEEK MTCAN_CHTYPEANY minimum delay on i o is 4 minutes ...

Страница 32: ...83A HP DDS4 4mm DAT HP data2 HP data2 1 0x34 1024 0xd639 4 0x00 0x13 0x24 0x3 3 name st class scsi target X lun 0 where X is the SCSI target address of the device you have attached HP Surestore DAT40x6 autoloaders there are 6 significant spaces between HP and Ultrium in line 2 tape config list HP C5713A HP DDS4 4mm DATloader HP data2 HP data2 1 0x34 1024 0xd639 4 0x00 0x13 0x24 0x3 3 name st class...

Страница 33: ...ginal with this retrieved file cmp original file tmp retrieved file This step compares the retrieved file and the original file byte by byte If they are the same there should be no output and this verifies that the installation is correct The arguments are as follows original file The name of the original file prefixed with Example stand vmunix retrieved file The name of the file retrieved from th...

Страница 34: ... fast search capability It does not necessarily separate files It is up to the host to assign a meaning to the mark Immediate mode A mode of responding to SCSI commands where the drive or other peripheral does not wait until the command has finished before returning status information back to the host When writing filemarks Immediate mode can significantly improve the performance of systems which ...

Страница 35: ...E SCSI cable A6528A 2 5 m external 68 pin high density to 68 pin very high density LVD SE SCSI cable A6529A 5 0 m external 68 pin high density to 68 pin very high density LVD SE SCSI cable A6530A Should you require an additional terminator order the following Item Description Part Number terminator 68 pin high density LVD SE multimode SCSI terminator A6531A SCSI host adapters If your system requir...

Страница 36: ...nformation contained in this document is subject to change without notice Hewlett Packard makes no warranty of any kind with regard to the material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Hewlett Packard shall not be liable for errors contained herein or direct indirect special incidental or consequential damages in connection wit...

Страница 37: ...ow do I know what drivers I am using at the moment and what drivers do I need for running tape backups For further details on tape drivers in general refer to the answer to the question How do tape drivers work within a Windows NT environment It is clear that irrespective of the operating system version or tape drive vendor problems are sometimes experienced when users attempt to set up Windows NT...

Страница 38: ... allow users with NetWare 3 12 and NetWare 4 11 to use the new NWPA architecture This can be summarised as follows NetWare Version Driver Architecture NetWare 3 12 DDFS NWPA with Patches NetWare 3 2 DDFS and NWPA NetWare 4 11 DDFS NWPA with Patches NetWare 4 2 DDFS and NWPA NetWare 5 0 NWPA only For further details refer to the question What is the difference between NWPA and the old DDFS dsk arch...

Страница 39: ...re DAT24x6 autoloaders can be supported instead by using the mtx utility supplied by Hewlett Packard on the HP SureStore CD ROM disk For details refer to the answer to the question Why does my device not work correctly with ISV Backup Software or the SCO in built backup applet It is clear that irrespective of the operating system version or tape drive vendor problems are sometimes experienced when...

Страница 40: ... your own non generic kernel you should not have to add drivers to your system For further details refer to the answer to the question How do I know what drivers I am using at the moment and what drivers do I need for running tape backups Linux does not give native support for the HP SureStore DAT24x6 autoloaders The HP SureStore DAT24x6 autoloaders are supported instead by specific drivers suppli...

Страница 41: ... support for all popular SCSI HBAs Check http www linux org about support for your particular hardware all popular Adaptec 78xx and 77xx chipsets along with Symbios 53cXXX derivatives are currently supported compiling a new kernel If your kernel does not include the relevant SCSI drivers then you should compile a new kernel by downloading the kernel source tarball Once downloaded a new kernal can ...

Страница 42: ...g the SCSI tape drive target If you wish to check that the drive you have present is seen by the operating system examine the boot time output with dmesg Enter the command dmesg more and look for a message like st0 which identifies a SCSI tape target Tapes are numbered sequentially as found by the OS starting at 0 dev stX Rewinding SCSI tape device X dev nstX Non rewinding SCSI tape device X The n...

Страница 43: ...blem is one of the first three listed above However this will not preclude any SCSI errors which arise from marginal cabling and which generally show up during high speed synchronous data transfer when performing backups restores Some systems will not display the SCSI Inquiry strings when booting However all Adaptec and Symbios SCSI controllers with a BIOS should do this checking the tape driver c...

Страница 44: ... device support to a minimum non generic kernels If you are running a non generic kernel you need to download the kernel source code for the release you have installed or install a package that contains it Configure the kernel by following the instructions under usr src linux and reboot to have an OS that includes the new driver See the answer to the question How do I know what tape drivers I am u...

Страница 45: ...the usual kernel file location for example re run sbin lilo to allow it to boot reboot your system with the new kernel autochanger devices Note This only relates to DDS format tape drives Autoloaders are not available for DLT or Ultrium formats By default Linux does not have any software that will drive an autochanger device such as the HP SureStore DAT24x6i and the HP SureStore DAT24x6e autochang...

Страница 46: ...d ISV Backup Software For a full list of compatible devices and software consult http www hp com go connect IHV backup software IHVs that support the Linux OS are listed under http www linux org ISV s may also document their support on their own web sites Hardware support is typically via one of a number of methods IHV s will release technical specifications to the developer community to enable th...

Страница 47: ...unix linux frequently asked questions file C Documents 20and 20Settings topher COL SPRINGS Desktop dltvs80 20manual document common drivers_faqs eng ul_q6 htm 2 of 2 11 29 2001 8 34 57 AM ...

Страница 48: ...se the latest drivers Linux drivers are constantly being refined by the driver writers Hewlett Packard s experience has shown that the shipping drivers in a given release for example RedHat 5 2 tend to be stable You should certainly expect a test release of Linux odd numbered kernel source for example 2 1 x to be less stable than a production release even numbered kernal source for example 2 0 x h...

Страница 49: ...ents this and enables restores to be done to some other path of the filesystem Restore In order to restore an archive type in the following commands cd someplace to restore tar xvbf 20 dev st0 Note that the different elements of the above command signify the following x means extract v means verbose remove if you want quiet b means buffer the output f specifies the tape archive in this case a peri...

Страница 50: ...ch adaptor your disks are installed upon If you are running a SCSI system and wish to install SCO you have to have the root disk on SCSI ID 0 The host bus adaptor chipset determines which drivers are used to talk to SCSI peripherals as shown in the following table Adaptec 78xx chipset alad driver Adaptec 77xx chipset arad driver Symbios 53cxx chipset slha driver the symbios logic host adaptor Note...

Страница 51: ...at the remove option is also present here You will then be asked which host adaptor the tape is on Pick either alad arad or slha as appropriate You are then asked which bus is the drive on This actually means which SCSI channel is the drive on If you have a dual channel bus and it is on the second channel then the bus number is 1 Otherwise if it is a single bus system or is on the first channel an...

Страница 52: ...SI Inquiry string of the tape drive is seen at boot time then it is unlikely that the problem is one of the first three listed above However this will not preclude any SCSI errors which arise from marginal cabling and which generally show up during high speed synchronous data transfer when performing backups restores Some systems will not display the SCSI Inquiry strings when booting However all A...

Страница 53: ... you have an onboard Adaptec 78xx chipset and then add a 2940UW PCI card then the OS will number the onboard chipset at adaptor number 0 and the PCI card at number 1 This holds for given families so for example if you had the previous configuration and added in a Symbios PCI board it would then by slha instance 0 as there are no other Symbios boards present already noting the bios information The ...

Страница 54: ...i and the HP SureStore DAT24x6e autoloaders To run a HP SureStore DAT24x6 autoloader within the SCO OS you can use the mtx utility supplied by Hewlett Packard on the HP SureStore CD ROM under the Unix directory To use mtx point it at a tape device and then tell it which tapes you wish to load or unload For example mtx d dev xStp0 s will report back which slots have tape media loaded mtx d dev xStp...

Страница 55: ...ertified by SCO refer to http wdb1 sco com chwp owa hch_search Select the tape drive vendor as Hewlett Packard and the search category as tape drives If problems are experienced with this link start at http www sco com and follow the Support and Hardware Compatibility links SCO certification SCO perform official certification of tape drives for all of their OS releases ISVs will qualify their soft...

Страница 56: ...ading to the latest SCSI transport drivers If you are experiencing SCSI errors then having checked your cabling you should consider upgrading your SCSI transport drivers to use the latest drivers alad arad slha In at least one case SCO OpenServer 5 0 0 release it has been found that the SCSI HBA vendor had a better functioning driver than the one shipped with SCO However as of SCO OpenServe 5 0 4 ...

Страница 57: ...is and enables restores to be done to some other path of the file system Restore In order to restore an archive type in the following commands cd someplace to restore tar xvbf 20 dev rStp0 Note that the different elements of the above command signify the following x means extract v means verbose remove if you want quiet b means buffer the output f specifies the tape archive in this case a peripher...

Страница 58: ...he DDFS architecture Independent Software Vendor ISV backup applications tend to use the ASPI Advanced SCSI Programming Interface layer to communicate with tape drives Therefore when using backup applications such as BackupExec and ArcServeIT the relevant ASPI layer driver must be loaded in place of the normal tape driver See the answer to the question How do I know what drivers DDFS or NWPA I am ...

Страница 59: ...NetWare 3 x 4 x or NWCONFIG NLM NetWare 5 x These can be loaded at the console prompt Consult your NetWare manual for full details on how to use these utilities typical DDFS drivers used for tape drives The following tables list typical DDFS drivers used for tape drives on NetWare 3 x 4 x systems HBA drivers dsk file extensions AIC7870 DSK NetWare 3 x 4 x Adaptec AIC78XX chipset driver inc 2940UW ...

Страница 60: ...above However this will not preclude any SCSI errors which arise from marginal cabling and which generally show up during high speed synchronous data transfer when performing backups restores If the problem relates to an LVDS Ultra 2 Wide 68 pin device sharing the SCSI bus with SE narrow 50 pin devices users must ensure that either the LVDS device is placed first on the bus or the appropriate pass...

Страница 61: ...n your systems The general advice however is that drivers should only be altered if problems are actually being experienced possible impact on other parts of the system If you are experiencing SCSI errors when using your backup software you need to consider the possible impact on the other parts of the system before you decide to change the HBA drivers For example upgrading the driver for the SCSI...

Страница 62: ...s as follows startup ncf Find the line that references the driver and modify it using the examples below as a guide To scan all LUNs on all targets use the lun_enable option LOAD AHA2940 HAM slot slot no of hba lun_enable ff To scan LUNs 0 and 1 on all targets use the lun_enable option LOAD AHA2940 HAM slot slot no of hba lun_enable 03 To scan LUNs 0 and 1 on target 2 use the multlun_targets optio...

Страница 63: ...ttp support cai com Download patches asitnwee html ArcServe v 6 1 users should use Service Pack 2 and additional patch files as advised by CA Information can be found at http support cai com Download patches asnw html instructions for installing BackupExec with NWPA During the installation of BackupExec from a windows client you will reach a screen saying Select the type of controller installed in...

Страница 64: ...nt points I need to be aware of when changing drivers in my system before altering drivers in your system how to obtain upgrades HBA ham drivers should be available from the HBA vendor They can be downloaded from www adaptec com see http www adaptec com support overview scsiha html and www lsilogic com see http www lsilogic com Some chipset ham drivers may not be available on HBA manufacturer webs...

Страница 65: ...l NetWare Tape Device certification status for HP SureStore Tape Devices is given below NetWare Version NW 3 xx NW 3 xx NW 4 xx NW 4 xx NW 5 xx Driver DSK Driver TAPEDAI DSK See Note 1 NWPA Driver SCSI2TP CDM See Note 1 DSK Driver TAPEDAI DSK See Note 1 NWPA Driver SCSI2TP CDM NWTAPE CDM for NW4 2 NWPA Driver NWTAPE CDM DAT24 Certified See Note 1 Certified Certified To be Certified DAT24x6 See Not...

Страница 66: ...le based utility that provides the functionality required to backup from and restore to a NetWare server running an appropriate TSA Target Service Agent It does not offer DDS Autoloader support For full details of Sbackup consult the Sbackup NetWare 3 x 4 x Quick Reference Guide SBCON The other applet is SBCON provided with NetWare 5 x SBCON is also console based but has a partner application call...

Страница 67: ...perform a backup under NetWare 3 x work through the following steps 1 After SBackup loads enter a suitable supervisor username and password SBackup will present you with a list of DIBI drivers 2 If dsk is being used select the DIBI 2 DAI driver option A list of tape devices that are controlled by DSK drivers should appear Select the relevant tape device HP Surestore Tape Devices are denoted in the...

Страница 68: ...ally by SBCON as required for a backup restore operation Load the Runtime Utility Component of SBCON Proceed as follows 1 Type the command Load QMAN NLM This is the SMS Queue Manager When loading QMAN for the first time you will be asked to specify the context and name of the SMS Job Queue to be created this actually creates a printer queue object in NDS which the backup engine can poll for schedu...

Страница 69: ...e same time 4 The class drivers provide the environment within which the plug ins operate The class driver does most of the work that is common to the tape drives and the HBA s for example read write etc and uses the plug in to provide device specific processing for example reading modifying particular tape drive specific settings 5 This environment known in programming terms as an API can change ...

Страница 70: ...of the currently loaded tape drivers can be viewed or a new tape driver added as follows 1 Click on the Start button Select Settings and then Control Panel 2 Double click on the Tape Devices icon A list of currently loaded Tape Device drivers will be displayed 3 The system will scan for attached tape drives and will display a message for the new SCSI device If you wish to load an addition driver f...

Страница 71: ...ook for the SCSI Inquiry string of the Tape Drive which should be displayed by the SCSI HBA BIOS of the HBA to which the drive is attached when the system is booting If the SCSI Inquiry string of the tape drive is seen at boot time then it is unlikely that the problem is one of the first three listed above However this will not preclude any SCSI errors which arise from marginal cabling and which g...

Страница 72: ... problems and can often improve any existing reliability problems you may have on your systems possible impact on other parts of the system If you are experiencing SCSI errors when using your backup software you need to consider the possible impact on the other parts of the system before you decide to change the HBA drivers For example upgrading the driver for the SCSI controller connected to the ...

Страница 73: ...Windows NT frequently asked questions file C Documents 20and 20Settings topher COL SPRINGS Desktop dltvs80 20manual document common drivers_faqs eng nt_q4 htm 2 of 2 11 29 2001 8 35 52 AM ...

Страница 74: ...der neither Windows NT 3 51 nor Windows NT 4 0 ISV backup software In order for ISV Backup Applications to work with Autoloaders firstly the ISV tape driver that supports the Autoloader must be loaded see the ISV supplied documentation for full details ISV Backup Applications will generally either automatically load the required tape drivers for example ArcServe ArcServeIT or prompt you on how to ...

Страница 75: ...st likely causes of SCSI errors upgrading to the latest HBA drivers If you are experiencing SCSI errors then having checked your cabling you should consider upgrading your HBA drivers to use the latest drivers Drivers are constantly being refined by manufacturers and HP s experience in compatibility testing on HP Surestore tape drives has shown that using the latest versions of drivers especially ...

Страница 76: ...f your Ultrium drive We recommend using a backup application which provides better memory management as well as other useful features such as TapeAlert HP Computer Associates Veritas Legato and Yosemite all provide suitable products that have been tested with your Ultrium drives For the latest list of backup packages that support your Ultrium drives please contact your tape drive or library manufa...

Страница 77: ...though this can be done with difficulty using the Windows NT at scheduler service see the Windows NT Resource Kit for details Note Ultrium high performance tape drives As a general rule native backup applications such as NTBackup and tar do not provide the required data streaming rate to get the full performance of your Ultrium drive We recommend using a backup application which provides better me...

Страница 78: ... can be found in the Administrative Tools folder in Main on Windows NT 3 51 and under Administrative Tools on the Programs menu of the Start menu in Windows NT 4 0 performing a backup To perform a backup work through the following steps 1 If the Drives window is not already open click on the Drives button at the bottom of the dialog box 2 Select the files to back up 3 Click on the Backup button to...

Страница 79: ...Windows NT frequently asked questions file C Documents 20and 20Settings topher COL SPRINGS Desktop dltvs80 20manual document common drivers_faqs eng ntbackup htm 2 of 2 11 29 2001 8 36 01 AM ...

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