HamaZ

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About HamaZ

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  1. Is there anybody who knows the solution to this issue? I thought that, since this controller was very common, there must be people who have experienced the same.
  2. Hello! I have an Adaptec 29160 SCSI HBA (Ultra160 SCSI) sitting in a PCI 33/32 bus slot. It has two Cheeatsh 15K.4 and one Cheetah 10K.6 connected on the LVD segment by a U320 SCSI cable. All drives are working in U160 LVD mode. The chipset is Intel i815, and the CPUs are two Pentium 3 Tualatin-S at 1400 MHz. All drives are independent (no RAID). The read STR speeds are excellent, and every drive's read STR corresponds to the STR measured by StorageReview in its initial review of that drive model. The burst speeds (measured by HDTach 3.01) on Cheetahs 15K.4 are 113 MB/s, so it seems that the PCI bus has no performance issues (like it usually does on crappy VIA chipsets). However, the write performance on any drive is rather bad. I can not acheve higher throughput than around 33-38 MB/s (I tested this by copying large files from one drive to another, etc.). I used Seagate's SeaTools Enterprise to verify that all drives have Read and Write caching ON, and that they work in "Performance" (desktop oriented) caching mode. Does anybody have any idea why is write throughput low, and how could I improve it? I would expect to be able to acheve around 55 MB/s (if the real troughput of the PCI bus is 110 MB/s). P.S.: Don't nuke me because I value STR so much. I know everything about hard drive performance(s), and STR IS important for this setup, since I mostly move around LARGE files and do fast video montage (cutting & merging).
  3. HamaZ

    PCI64 SCSI HBAs on PCI32 bus

    Thank you for the reply. Other PCI cards are not of any concern, because they are rarely used at the same time as the disk subsystem, so it can be said that the SCSI card would have the PCI bus mostly free for itself. So, the only concern is if the card will actually be able to take advantage of PCI 33/32 bus. My questions from the first post still remain active.
  4. Hello. I heard (and read in several topics in this forum) that most 64-bit PCI SCSI *RAID* controllers (from Adaptec, LSI, Mylex, etc.) do not behave well at all when used on a regular 32b/33MHz PCI bus. According to my hearings/readings, they work, but performance is unnaturally slow (card's bandwidth tops at around 20-40 MB/s). AFAIK, PCI bus should put trough 100-110 MB/s in practice. Is this generally true, or maybe those people had some incompatibilities etc.? But this issue may not be applicable to non-RAID PCI64 SCSI HBAs, and that is my main question here. I intend to acquire Adaptec AHA-39160 (PCI64 dual-channel U160 non-RAID HBA) and to run it on a regular PCI 32/33 bus. Will the card's troughput match the actual troughput of my PCI bus, or will it drop dramatically (to how many MB/s)?
  5. Hello! I have Adaptec AHA-29160LP (low profile) card which has only one internal connector, HD68. I have one HDD attached (7200 RPM, nothing exhalting), but I want to attach two CD-ROM drives too. The problem is that I forgot what are the issues when mixing wide and narrow devices on a wide bus. I know that termination gets complicated. And I know that this will drop me to Ultra Wide speed (SE), but I can live with that just fine. I do not have any 68f-50f adapter, but I will need two of them to make this work. Now the problem is the termination of the upper byte. How can I determine if a particular 68f-50f adapter terminates the high byte if it is NOT written on it? Most wide/narrow SCSI adapters to not have any inscriptions on them. Regards
  6. Thank you very much for this fine explanation. Well, I would like to sell these drives on the local market, but I can't because all interested buyers ask for a "complete" solution (controller, cable, etc.). I have all that except the damn SCA adapter(s). Now I'm stuck with these drives until I find a connection between them and the rest of the world. I tried to find some old servers for trash (which hopefully have bays for SCA drives), and salvage SCA backplanes from them. But most those backplanes are proprietary designs which either don't fit in a standard HDD cage or use special power connectors .... By the way, how to tell if a SCA adapter/backplane is SE-only or LVD/SE if it is not written on it?
  7. Hello! Long time no write. Nor read. Anyway, I have several old SCA SCSI hard drives. Most of them are LVD/SE (Ultra2 I suppose), and a few older ones are SE only. I would like to use them, but I do not have SCA adapters (80 to 68 pin). My search on Ebay for "SCSI SCA" (ordered by lowest price ascesending) revealed that it is pracitally flooded with those "unidrive" SCA adapters (by unidrive I mean that the adapter has only one SCA connector, therefore attaching only one SCA drive to one 68-pin cable connector). All those adapters from all sellers seem to be the exact same design. Here is a random example: http://cgi.ebay.com/NEW-SCA-80-ADAPTER-TO-...1QQcmdZViewItem Does anybody know if this particular adapter model is any good? And does it support LVD operation (AFAIK, SE-only SCA and LVD/SE SCA adapters are significantly different, although they look the same, right?)? I read on a few places in this forum that any unidrive SCA adapter sucks. It this true? If it is, then what the |-|ell should I use to connect these drives to the rest of the world?
  8. HamaZ

    Adaptec AHA-2940UW problem

    I agree with you.
  9. HamaZ

    Adaptec AHA-2940UW problem

    Well the controller is most probably a retail edition. I have downloaded a BIOS update (v2.20) from Adaptec's web site. I have performed the update by the book, but after the flashing the program exited with an error message 8. That meant that it could not verify ROM image. Anyway, I performed a hard reset, but after that the HBA did not appear after the POST. That was bad. But the good thing was that the flashing program automatically saved the old BIOS version onto a floppy, and there is a BAT file for restoring it. When I started it, it exited with an error that my card does not have a BIOS. Looks like I have damaged it's BIOS. If someone know a way to recover the HBA, tell me. If this is it, then I will trash it. It was bad anyway. I am a bit dissapointed why did the update procedure fail if the card is retail, and why was it's BIOS "locked" in the first place?
  10. HamaZ

    Adaptec AHA-2940UW problem

    I really did not check that. What is the best way to discover that without having to dig the PC out of from desk and opening it? Is it a dead end in case if it is an OEM?
  11. HamaZ

    Adaptec AHA-2940UW problem

    I intend to use this HBA only for some testing and temporary storage of some stuff on a pair of 9GB UW hard drives, so it does not matter if the controller is not modern. I will try to flash it, but I was curious if there was some hidden setting or something which prevents any modification to the BIOS setup.
  12. I have acquired an Adaptec AHA-2940UW Ultra-Wide SCSI HBA. It's BIOS version is 1.34.3. The card came with some very wierd settings (HBA ID 15, boot ID 15, SCAM ON, ext INT13 OFF, multi LUN ON etc. I have of course tried to change this, but changes do not get saved when I exit setup / restart the machine. I have also tried with F6 - reset everything to default, but even that does not help. After the system restarts, the card retains its old "crazy" settings. Any ideas what causes this and how could it be resolved?
  13. HamaZ

    Win2000 and UDF CDs

    Well this is something. Where have you got this information from? I am a bit confused. You gave me two links. One is a direct link to download Adaptec's UDF reader, and another is a link of Roxio's UDF reader's documentation. Is Adaptec = Roxio in this case? If not, which one to use? Which is better (more "worldwide standard")? BTW, since there is no link to download Roxio's UDF reader on the page you provided, I have searched their site and have fount this: http://www.roxio.com/en/support/ecdc/softw...datesv4_2.jhtml This is the version 7.1. Note that the newest version mentioned on the page you linked is 5.01. It also seems that this new version does not cover 95 and NT, so I may discard it as potential solution. Note that I have still not found a link to download Roxio UDF reader 5.01. Maybe I should not if Adaptec's one is the best? I am waiting for your opinions about this. I will also perform some testings about this tommorrow.
  14. HamaZ

    Wide-to-Narrow SCSI adapters

    I have never heard of those two programs, but I will definitely check them. Thank you for the information. Are those programs general-purpose SCSI software, or are they related to some specific hardware (adaptec controllers only, perhaps)?
  15. Hi to every reader. I use "DirectCD 5.0" packet writing software. It is installed on my secondary machine, where my CD writer is also installed. OS is Windows NT4. I format a CD, write some data onto it, and eject it with "UDF 1.5" seal. That means that such a CD is writable by any PC which also has DirectCD (and CD writer) installed. It is also READABLE by any PC which has an UDF 1.5 reader installed. If a PC does not have it, then when such a CD is inserted, that machine will only see one two files on it: autorun.inf and UDF installer file. The installer willl start automatically and offer UDF to be installed. After it is installed, that PC will properly read UDF discs. - -This is a rough quote of what DirectCD says. If I remember correctly, only Windows 95 and Windows NT do not support UDF at all. They need such a reader to be installed first. Win98(SE) supports UDF, but I am not sure does it support v1.5. WinMe, Win2000 and WinXP should natively support all UDFs. Is this correct? This is the problem which I have: I have made two such CDs, and I have tried them on my primary PC which has only a DVD-ROM drive. Win98SE and Win2000 (SP4+) are installed in dual mode. Win98SE reads all discs with no problems (it seems that I have installed Adaptec UDF reader sometime in the past), but in Win2000 I can only see one file: "Non-Allocable Disk" of zero bytes in size. The label of CD is correct though. When I enter CD's properties, it says that it is an UDF CD, 576MB capacity with zero bytes free. What is the problem?? I have also tried these CDs on another PC with Win95 OSR2. At first it only saw the embedded UDF installer, but after I installed it, I could access UDF as promised.