Scanner SCSI & RAID Devices Driver Download

Posted By admin On 12/10/21
  1. Resolving Print jobs stuck in queue and other printing problems using the HP Print and Scan Doctor. Download the HP Print and Scan Doctor; Run HPPSdr.exe from the download location on your computer. Once HP Print and Scan Doctor is open, click Start, and then choose your printer. If your printer is not listed, turn it on and click Retry.
  2. To scan for LUNs larger than 7 on a SCSI-2 device and to scan without assuming LUNs are consecutive. SCSI scanning flags (not for SLES8) The parameters that influence the SCSI scanning behaviour are combined in a single parameter, scsimod.defaultdevflags. This parameter can be passed to the kernel through the kernel command line, or it can.
  3. Method-2: How to scan/detect new LUNs and SCSI disks in Linux, using the rescan-scsi-bus.sh script To use the rescan-scsi-bus.sh script, “sg3utils” package has to be installed in the system. If not installed, run the following command to install it.

Windows SCSI Tips

Adding a Scanner to a Pre-Installed Dell SCSI Adapter Card. If you have a Dell factory-installed AHA-2940U or AHA-2940UW SCSI controller card with a SCSI CD-ROM drive and SCSI hard drive connected, you will need to change some internal cabling in order to use the external SCSI connector on that card. SCSI-1: The original specification developed in 1986, SCSI-1 is now obsolete.It featured a bus width of 8 bits and clock speed of 5 MHz.; SCSI-2: Adopted in 1994, this specification included the Common Command Set (CCS)- 18 commands considered an absolute necessity for support of any SCSI device.

My SCSI scanner was not powered on at boot time

If your SCSI scanner was not powered on when you booted Windows, thenWindow's Plug and Play cannot see it.

But you can power the scanner on later, then go to the Control Panel -System - Device Manager. First expand the SCSI CONTROLLERS item andhighlight the scanner's SCSI board there. Then click the big REFRESHbutton, and the scanner should then work after a few seconds. Thisrequirement is not the scanner's fault at all, it is instead due toWindows counting all its hardware when it boots. Refresh will look againafter the scanner is on. The scanner itself may or may not appear in theDevice Manager list then, some do, some don't, it doesn't affect how theywork.

In Win98 or ME, you can go directly to the Device Manager with a RightMouse Button click on the My Computer icon, then Properties. GuyDaugherty points out that a short cut to access the Device Manager is tohold down the 'Windows' key and then hit the 'Pause/Break' key.

At the Win XP Start menu, right click on the My Computer link,then Properties, then the Hardware Tab. Then in the Device Manager, rightclick on the device, and select 'Scan for Hardware Changes' for Refresh,or there is a toolbar icon too.

NT 4.0 had a Control Panel applet 'Tape Devices' with a 'Detect'button that finds the SCSI scanner in a similar way.

Some scanner SCSI boards do not use an IRQ with some software. Thesepolled devices therefore will not be in the Device Manager List. Noproblem, these drivers interface directly with the port, and do notsuffer the problem anyway.

These methods will not work for scanners on the parallel port or USBport. However, some scanners provide their own utility to do thisfunction.

Note that you should not use the Refresh button unless your computeris idle. Highlighting the SCSI Controller greatly minimizes the effect onthe system, but otherwise, if the top line 'Computer' is highlighted, theRefresh button checks and resets all of the hardware.

You do not have to select the SCSI board first, but if you highlightthe top line 'Computer', it will also reset all your hardware. It cantake longer, and your printer and modem LEDs may blink, and it candisrupt the current activity. Refresh may cause your modem to hang up thephone line if online. Your printer LED's will flicker too, so activeprint jobs are probably at risk. If your fax modem is listening to theserial port, then Refresh may abort, may complain that TAPI has theserial port.

So your computer should be idle. Or you should highlight the SCSIcontroller item instead.

ASPI For Windows XP

Windows 9x always included ASPI, required by SCSI scanner drivers to communicate with the SCSI board. We never gave ASPI a seconds thought, we automatically always had it with Win9x. However, Windows 2000 and XP do NOT include ASPI, so it will be necessary that you must add it for a SCSI scanner.

Free from www.adaptec.com (if they move it again, just search there for 'ASPI')

Does your SCSI scanner hog your machine?

If you have an ISA SCSI card, then the odds are good that whenscanning, probably your computer is 100% 'BUSY', that is, you are unableto switch to a different program to do anything else for the duration ofthe scan. Some users don't mind this, they are intent on the scanningjob, but it drives others wild.

In the general case, this is due to the PIO mode SCSI board (parallelport scanners will act the same). PIO mode (Programmed I/O, thesimplest boards like the Adaptec AVA-1502AE and 1505 cards) means thatyour computers processor has to do all of the work of transfering thedata, byte by byte, every byte, and it stays quite busy keeping up. PIO is much like parallel port devices and most IDE devices inthis respect, that is, the computer CPU does all of the work. APIO board is what came with most SCSI scanners back when they shipped ISAcards, and they suffer this problem. This does not mean they dont workwell, but they will make your computer be very busy when scanning. MostPCI SCSI cards today are DMA instead of PIO.

SCSI cards are available that can do DMA (Direct Memory Access) tomove larger blocks of data directly from the card to memory itself,without going through the computer processor. Conversely, the PIO cardsmust give the data to the computers processor, byte by byte, and thecomputers processor must move the data to memory, which keeps thecomputer pretty busy, very few idle cycles are available for other jobs.DMA solves that problem.

ISA or PCI card -- refers to the type of motherboard slot connector.

PIO or DMA -- refers to if the computer CPU or the SCSI board controlsthe memory transfer.

There were very few ISA DMA SCSI cards (Adaptec 1540/1542 was one)because the ISA bus can only access 16 MB of memory, so it must be doublebuffered (CPU must move data a second time to the final memory location).Most PCI SCSI cards are DMA, but not all.

An inexpensive PCI DMA SCSI board that is extremely suitable for ASPIcomplient scanners (which is all of them today, but the early scannerswere exceptions) is the Adaptec AVA-2906 (the 2906 replaced theAHA-2902E, I think the 2902E is no longer available in retail channels).These are PCI boards with 10 MHz SCSI bus, named 'Fast SCSI'. The PCI busis faster than any ISA card can be (Pentiums have the PCI bus. 486typically do not, but a few did). Scanners cannot go 10 MHz, but the oldISA bus is limited to even less than the scanners, so you will see alittle speedup with a PCI card (as compared to an ISA card). Not a lot,but a little in some cases. The AVA-2906 board is about $44 to $50retail. The AVA-2902E had only an external connector (the E is forExternal), but the AVA-2906 has both external and internal connectors.These boards will operate up to 7 SCSI devices, if the cables are shortenough. Three external devices each on 3 foot cables is more realisticdue to cable length. The 10 MHz SCSI board will however tolerate longercables than will the faster Ultra or Wide boards, forget about six feetcables with them.

The AVA-2902E and AVA-2906 boards will accept the DB-25 connectormatching the cable that comes with many scanners, keeping the total costdown (since a new cable is not needed). Such a DMA PCI card will make atremendous difference in being able to use the computer while the scanneris scanning. It still may not be quite 100% perfect in that regard, butwill be day and night better, you will think it's great.

Other SCSI cards are also available that are 'bus-mastering', meaningthe SCSI board can control the SCSI bus itself. The bus-mastering SCSIcard is basically a coprocessor, it has its own processor, and it can domany I/O commands to different devices at one time (as opposed to needingmany instructions from the computer to do it). It can do most all aspectsof the SCSI transfer by itself. DMA alone is good to give the computerprocessor some idle time, you will see a dramatic difference in beingable to switch to other programs while scanning if this is important toyou. But the bus-mastering card also provides DMA, and also allows yourcomputers processor to be nearly fully idle and available for othermultitasking duty while it is waiting on notification of completion fromthe SCSI card. The DMA feature is extremely desirable for a recordableCD-R or CD-RW device too.

These boards mentioned do not have a BIOS, so they cannot boot thecomputer from a SCSI hard disk. They can operate disks, but they cannotboot from them. There are models that do and can (AHA-2940) and they costmore. They are also typically Ultra SCSI (20 MHz) or UltraWide (40 Mhz).These are a headache for a scanner, because the Ultra spec for bus lengthis 1.5 meters (4.9 feet, total of internal plus external cables, below).

SUMMARY

A PCI bus-mastering SCSI board is very desirable for more than onereason. The PCI card will be faster than an ISA card, simply because ofthe ISA bus limitations. And most are DMA boards, giving some idlecycles to the computer. A bus-mastering card will permit your computerto be mostly idle to do other things during the scan. These featuresoffer a lot of appeal.

I certainly cannot speak about the full extent of compatibility forall scanner brands with all SCSI boards, and naturally you would want tocheck with your scanners tech support department to verify that yourscanner will operate with a standard ASPI interface. The Adaptec AVA-2906is one such standard ASPI board, the drivers are supported directly byWindows, and any scanner ought to work with it. Do check first.

Scanner Scsi & Raid Devices Driver Downloads

Scanner scsi & raid devices driver download 64-bit

The high-end SCSI boards, the Ultra and the Wide cards, are reallyless suitable for a low speed external device like a scanner. It's muchlike putting a race horse in a pony ride, and there are often someproblems, not entirely unexpected. The spec's for the maximum SCSI buslength is:

SCSI TypeMax bus length
Total of Internal plus External
SCSI-1 - 5 MHz6 meters, 19.7 feet
SCSI Fast - 10 MHZ3 meters, 9.8 feet
SCSI Ultra - 20 MHZ1 to 3 devices - 3 meters, 9.8 feet
4 to 7 devices - 1.5 meters, 4.9 feet

Some users try to ignore this charts facts, but cable length is ofcourse extremely important. The length in the chart is the overall buslength, the sum of the internal cable and the external cable length. Lesslength than this would be expected to perform better. Putting a 6 footexternal cable on a Ultra board with a 3 foot internal cable is askingfor trouble. The simple DB25 connectors used on many scanners (omits allthe ground wires, signals are no longer on twisted pair wire for noiseimmunity) were added when all we had was 5 MHz SCSI-1 (not the best ideaeven then), and were never intended for a high speed bus, and arecertainly a complication. On a UltraWide board, stepping the 68 pinexternal connector down to 50 pins is another problem, the other 18 pinsmust be properly terminated (higher quality conversion cables will dothis properly). The termination specs prohibit having three cable 'ends',and unfortunately the 68 pin internal bus, the 50 pin internal bus, andthe 50 pin external bus are three. You can only use any two. And generaltiming problems of using the faster board with slower devices is aconcern in some cases.

Adding an 'active' terminator can make all the difference in properperformance on a Fast or Ultra bus. I use a Belkin F2N959-B activeterminator ($31 at www.buy.com). This is a DB25 connector to fit manyscanners.

Scanner SCSI & RAID Devices Driver Download

If you use an Ultra or UltraWide board with a few internal devices,and if you have the extra motherboard slot and the extra IRQ, I wouldsuggest that your performance satisfaction will be higher if you installan inexpensive second board (PCI DMA like Adaptec 2906 or 2910) for thescanner. You should realize that life is simple and sweet with a secondFAST card for the external devices.