THE WELCH COMPANY
440 Davis Court #1602
San Francisco, CA 94111-2496
415 781 5700


S U M M A R Y


DIARY: October 5, 2001 10:10 AM Friday; Rod Welch

Called Exabyte on tapes 20 and 21 defective returned for replacement.

1...Summary/Objective


..............
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CONTACTS 
0201 - Exabyte Corporation                  800 392 2983 fax or 800...
020101 - Mr. Michael Goff; Customer Rep  =Telephone
020102 - .....@exabyte.com
020103 - Technical Support
020104 - Description

SUBJECTS
Exabyte Tape 20 Failed During Backup
C13 Backup Failed Using Tape #20
279596 Called Exabyte on Problem for 010403 re Tape #21

0705 -    ..
0706 - Summary/Objective
0707 -
070701 - Follow up ref SDS 11 0000, ref SDS 10 0000.
070702 -
070703 - Exabyte provided guidance that indicates purchasing a new SCSI adapter
070704 - could solve problem of backups failing to complete the verify cycle.
070705 - Mike feels the tapes we returned were defective because of
070706 - manufacturing mistakes.  He feels no change in User procedure is
070707 - required.  We may still still need comments from Exabyte on
070708 - terminating the SCSI bus. ref SDS 0 SJ5K  Mike suggested looking into
070709 - getting a new SCSI adapter to solve problems during verify operations
070710 - when backing up the computer using the Exabyte tape drive.  Research
070711 - showed two possibilities.
070712 -
070713 -       [On 011008 received call from SCSI Stuff and purchased this
070714 -       unit. ref SDS 14 0001
070715 -
070716 -
070717 -
070718 -
070719 -
0708 -
0709 -
0710 - ë2S4J Discussion
0711 -
071101 - Talked to Malika.
071102 -
071103 - Reviewed background on 010825 submitting with the letter, ref DIP 1
071104 - 0001, two defective tapes. ref SDS 11 0001, under incident number
071105 - 279596.
071106 -
071107 - Malika said that Michael Goff who was contacted on 010423, ref SDS 9
071108 - 0001, prepared a shipping request to send two replacement tapes on
071109 - 010924.
071110 -
071111 - Tapes were actually shipped on 011004 with delivery date for 011008.
071112 -
071113 - UPS tracking numbe:  1z64908w0745205846
071114 - ..
071115 - Asked what we can do differently to increase reliability?
071116 -
071117 - Was transferred to a technical engineer.
071118 -
071119 -
071120 -
071121 -  ..
0712 -
0713 -
0714 - 1405
0715 -
071501 - Mike Goff called back.
071502 -
071503 - Mike said he sent replacement tapes because he found large defective
071504 - sectors, which indicated to him a manufacturing problem.
071505 -
071506 - Mike feels his experience shows that Exabyte tapes are very reliable,
071507 - and so the fact that two consecutive tapes were defective is an
071508 - anomoly, and should not occur again.
071509 -
071510 -      [On 011011 Exabyte provides further support. ref SDS 16 0001
071511 -
071512 -      [On 020307 tapes 2 and 16 failed; determined all 45M tapes seem
071513 -      to be incompatible with Mammoth LT tape drive. ref SDS 17 0001
071514 -
071515 -      [On 020408 Exabyte instructed to return 45M tapes. ref SDS 19
071516 -      K75N
071517 - ..
071518 - Mike advised that backup slows down from 200 MB/Minute, to about
071519 - 2 MB per minute during full file backup because Microsoft and Novastor
071520 - have not coordinated on how Windows 2000 can release operating system
071521 - files that are open to run the operating system so they can be backed
071522 - up. Novaback for Windows 2000 is stopped by Windows 2000 from doing
071523 - the task it was purchased to perform.  This may suggest backing up
071524 - under DOS would be more effective, but nobody wants effective
071525 - software, everybody wants pictures.
071526 -
071527 - We reviewed a recent letter from Novastor received on 011003 with
071528 - ideas for fixing the problem of tape backup operations failing during
071529 - verify. ref SDS 12 0001
071530 -
071531 - Mike feels that since the tape drive has worked all along since
071532 - 010202, this suggests SCSI setup issues posed by Novastor are likely
071533 - not the cause of problems.
071534 - ..
071535 - Mike provided assistance to investigate the SCSI adapter bios.
071536 - He suggested examining the manual for this hardware, which turned out
071537 - to be filed with the documents for c11, rather than c13 where it is
071538 - currently installed, because the Jaz Jet SCSI adapter was moved from
071539 - c11 to c13 on 010202. ref SDS 6 K2FR and ref SDS 6 UW3K
071540 -
071541 -  ..
071542 - Installation of the tape drive is reported in the record on 000811.
071543 - ref SDS 3 1984
071544 -
071545 -      Terminate Bus
071546 -
071547 -          Bill's letter from Novastor on 011003 suggests terminating
071548 -          the bus. ref SDS 12 6P4M
071549 -
071550 -          The record on 000811 shows there was no evident way to
071551 -          terminate the bus. ref SDS 3 JDKI and ref SDS 3 DT8I  No
071552 -          change in this configuration is reported on 010202 when the
071553 -          tape drive was moved from c11 to c13. ref SDS 6 ZT6M  A
071554 -          possible difference between configuration on c11 and c13, is
071555 -          that c11 had an internal Exabyte 8505 tape drive connected,
071556 -          and an HP scanner connected externally. On c13, we did not
071557 -          connect the HP scanner, because the Internet greatly reduces
071558 -          the need to scan material.
071559 -          ..
071560 -          This may present a conflict for tape drive on c13....
071561 -
071562 -             [On 011008 discussed with SCSI Stuff. ref SDS 14 4X6G
071563 -
071564 -             [On 011008 submitted letter to Novastor. ref SDS 14 WY4F
071565 -
071566 -             [On 011010 got error message during boot sequence after
071567 -             installing Adaptec SCSI 19160 adapter controller that bus
071568 -             is not properly terminated. ref SDS 15 DE7G
071569 -
071570 -  ..
071571 - We looked at the invoice which shows....
071572 -
071573 -
071574 -               CROSS PLATFORM Jaz JET PCI USTRA SCSI card
071575 -
071576 -
071577 - ....that cost $90. ref DRP 1 0408
071578 -
071579 - The manual for the Jaz Jet PCI ULTRA SCSI adapter says to press Ctrl A
071580 - during the boot sequence, when the message for loading the adapter
071581 - software driver displays.
071582 -
071583 - Did this and entered the adapter BIOS.  It showed...
071584 -
071585 -            ..
071586 -           SCSI ID is 6, which aligns with instructions in the letter
071587 -           from Novastor. ref SDS 12 008G
071588 -
071589 -            ..
071590 -           Data transfer rate cannot be specified, so cannot adjust
071591 -           settings suggested in letter from Novastor. ref SDS 12 H64F
071592 -
071593 - Mike feels it might be worth a try to purchase an updated SCSI
071594 - adapter.  He said the typical DTR is 40 MB/sec, and the manual we
071595 - reviewed said it can only handle 20 MB/sec.  He also pointed to the
071596 - cost of $90 for the Jaz Jet SCSI adapter we purchased in 1998, and
071597 - feels $190 is the cost of an effective controller card today.
071598 -
071599 - Following the call to Mike....
071600 - ..
071601 - Research at....
071602 -
071603 -   Adaptec....
071604 -
071605 -              http://www.adaptec.com/
071606 -
071607 -
071608 - ...and at....
071609 -
071610 -
071611 -   SCSI Stuff....
071612 -
071613 -    http://www.scsistuff.com/Adaptec%20%20Ultra160%20SCSI%20Family%20Comparison%20Chart.htm
071614 -
071615 -
071616 - ....showed two choices.....
071617 -
071618 -  ..
071619 -      1.  Adaptec SCSI Card 19160
071620 -
071621 -          Adaptec
071622 -
071623 -    http://www.adaptec.com/worldwide/product/prodfulldesc.html?prodkey=ASC-19160&cat=%2fTechnology%2fSCSI%2fSCSI+for+High-Performance+PCs
071624 -
071625 -
071626 -          SCSI Stuff....
071627 -
071628 -  ..
071629 -          Price......
071630 -
071631 -             SCSI Stuff......................  888 712 0717
071632 -
071633 -                Actually shows two prices.................... $199
071634 -
071635 -                     http://www.scsistuff.com/
071636 -
071637 -  ..
071638 -                Another price................................ $156
071639 -
071640 -                     http://www.scsistuff.com/scsicards.htm
071641 -
071642 -       [On 011008 received call from SCSI Stuff and purchased this
071643 -       unit. ref SDS 14 0001
071644 -
071645 -                   Ultra 160 Scsi Bare Cards - shrink wrapped card,
071646 -                   registration card, driver disks for Win 95/98, Win
071647 -                   2000. (Linux, Unix, Solaris available), ships with
071648 -                   Adaptec TSID number. (enable free product support
071649 -                   from Adaptec)
071650 -
071651 -                       This is probably all we need, because we have a
071652 -                       cable, unless we need a special cable.
071653 -
071654 -              ..
071655 -             Provantage...................................... $218.42
071656 -
071657 -                     http://www.provantage.com/
071658 -
071659 -
071660 -          Ultra160 SCSI performance for the Windows
071661 -
071662 -          Bus system interface........................ 32 bit PCI
071663 -          System bus rate............................. 133 M/sec
071664 -          Date transfer method........................ bus mastering
071665 -          Data transfer rate.......................... 160 M/sec
071666 -          Internal connectors...
071667 -
071668 -               One 68-pin for LVD SCSI One 50-pin for Ultra SCSI
071669 -               Also supports Fast SCSI and SCSI-1 devices
071670 -
071671 -           ..
071672 -          External connectors...
071673 -
071674 -               One 50-pin for Ultra SCSI*
071675 -               Also supports Fast SCSI and SCSI-1 devices
071676 -
071677 -          Maximum number of devices................... 15
071678 -
071679 -          System Requirements.........
071680 -
071681 -               Intel PC or equivalent with available PCI slot
071682 -
071683 -          Operating System
071684 -
071685 -               Windows 95 and 98 Windows NT 4.0
071686 -               ..
071687 -               This does not Windows 2000, but NT may be okay.
071688 -
071689 -               Actually w2k is listed as a supported OS at.....
071690 -
071691 -                   http://www.scsistuff.com/scsicards.htm
071692 -
071693 -
071694 -          Cables
071695 -
071696 -               One 3-position 68-pin LVD with terminator One 3-position
071697 -               50-pin
071698 -
071699 -           Software
071700 -
071701 -               Adaptec EZ-SCSIr software and supported operating
071702 -               systems drivers
071703 -
071704 -            ..
071705 -           Physical Dimensions
071706 -
071707 -                6.87" x 3.87"
071708 -
071709 -           MTBF (Mean Time Before Failure)
071710 -
071711 -                352,913.1 hours
071712 -
071713 -  ..
071714 -      2.  Adaptec SCSI Card 29160
071715 -
071716 -          Adaptec....
071717 -
071718 -    http://www.adaptec.com/worldwide/support/suppdetail.html?cat=/Product/ASC-29160&prodkey=ASC-29160
071719 -
071720 -             Shows information about product specs.  Was unable to send
071721 -             an email to ask about the cable.  There are instructions
071722 -             for the external cable, but not for the internal cables,
071723 -             which may indicate that all internal cables are the same.
071724 -
071725 -             Says this is a 32-bit PCI to SCSI adapter.
071726 -
071727 -  ..
071728 -          SCSI Stuff....
071729 -
071730 -          Price......
071731 -
071732 -             SCSI Stuff......................  888 712 0717
071733 -
071734 -                Bare card.................................... $212
071735 -
071736 -                   Ultra 160 Scsi Bare Cards - shrink wrapped card,
071737 -                   registration card, driver disks for Win 95/98, Win
071738 -                   2000. (Linux, Unix, Solaris available), ships with
071739 -                   Adaptec TSID number. (enable free product support
071740 -                   from Adaptec)
071741 -
071742 -                       This is probably all we need, because we have a
071743 -                       cable, unless we need a special cable.
071744 -
071745 -                 ..
071746 -                Retail Kit................................... $305
071747 -
071748 -                     http://www.scsistuff.com/
071749 -
071750 -
071751 -             Provantage...................................... $285.99
071752 -
071753 -                     http://www.provantage.com/
071754 -
071755 -  ..
071756 -          Ultra160 SCSI performance, with greatest connectivity
071757 -          options for internal and external hard disk drives
071758 -
071759 -          Bus system interface........................ 64 bit PCI, 32 bit compatible
071760 -          System bus rate............................. 266 M/sec
071761 -          Date transfer method........................ bus mastering
071762 -          Data transfer rate.......................... 160 M/sec
071763 -          Internal connectors...
071764 -               ..
071765 -               One 68-pin for LVD SCSI One 68-pin for Ultra Wide
071766 -               SCSI One 50-pin for Ultra SCSI*
071767 -
071768 -               Also supports Fast SCSI and SCSI-1 devices
071769 -
071770 -          External connectors...
071771 -
071772 -               One 68-pin for LVD SCSI devices
071773 -
071774 -          Maximum number of devices................... 15
071775 -
071776 -          System Requirements.........
071777 -
071778 -               Intel PC or equivalent with available PCI slot
071779 -
071780 -           ..
071781 -          Operating System
071782 -
071783 -               Windows 95 and 98 Windows NT 4.0
071784 -               Unix, Solaris, Linux
071785 -
071786 -               This does not Windows 2000, but NT may be okay.
071787 -
071788 -          Cables
071789 -
071790 -               One 5-position 68-pin LVD with terminator One 3-position
071791 -               68-pin Ultra Wide SCSI One 3-position 50-pin
071792 -
071793 -           Software
071794 -               ..
071795 -               Adaptec EZ-SCSIr software and supported operating
071796 -               systems drivers
071797 -
071798 -            ..
071799 -           Physical Dimensions
071800 -
071801 -                6.87" x 3.87"
071802 -
071803 -           MTBF (Mean Time Before Failure)
071804 -
071805 -                301,041.2 hours
071806 -
071807 -
071808 -
071809 -
071810 -
071811 -
071812 -
071813 -
071814 -
071815 -
071816 -
071817 -
071818 -
071819 -
071820 -
071821 -
071822 -
071823 -
071824 -
071825 -
071826 -
071827 -
Distribution. . . . See "CONTACTS"