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- Kernel - Tape Drives
- Administration - BGarlock - Backup - Bela - Blog - Defragmentation
- Disks/Filesystems - Drivers - FAQ - Performance - Steggy - Unix
scsidev: SCSI utility for linux
I recently built an external SCSI enclosure, using an old tower. I used 3 SCSI drives, and built a LVM, so I could concatenate the drives together into one large drive, to host my temporary video scratch files.
| Title | Date | Comments | |||
|---|---|---|---|---|---|
| Understanding SCSI | 1999 03 | ||||
| - Fast SCSI (SCSI-2) doubled that to 10 MB/s by doubling the bus to 10 MHz. Unfortunately, there are other terms: "Fast-40", "Fast-80", "Ultra", "Ultra2" and more. - | |||||
| scsidev: SCSI utility for linux | 2005 02 | ||||
| - I recently built an external SCSI enclosure, using an old tower. I used 3 SCSI drives, and built a LVM, so I could concatenate the drives together into one large drive, to host my temporary video scratch files. - | |||||
| External SATA drives | 2004 12 | ||||
| - In theory, at least, multiple SATA disks have higher throughput than multiple SCSI drives because they aren't sharing a bus. - | |||||
| SCSI: An Old Dog That Keeps Learning New Tricks | 2004 06 | ||||
| - SCSI's ancestor, Shugart Associates System Interface, was publicly disclosed by Dr. Alan Shugart in 1979 in hopes of being accepted as an industry standard. - | |||||
| End of SCSI? | 2003 09 | ||||
| - Blog # 527 End of SCSI? - | |||||
| The Book of SCSI, 2d Edition | 2001 12 | ||||
| - This is one of those unusual books that manages to convey highly technical information in a very readable and understandable way. At my very first reading, I thought it was a little disjointed; it felt like the chapters were somehow out of order. However, after going back for a second time, I then thought that the order made perfect sense. - | |||||
| What SCSI adaptors are supported? | 1997-2003 | ||||
| - Support for modern scsi adaptors may be very limited on older SCO Unix. Choosing SATA is often an easier path. - | |||||
| How do I change my SCSI host adapter? | 1997-2003 | ||||
| - Replacing a scsi controller with a differen brand or model on SCO Unix systems. Details of kernel link files needed - | |||||
| Can I have both IDE and SCSI Drives? | 1997-2003 | ||||
| - Mixing SCSI and IDE drives could be a problem on old sysems if you wanted the boot disk to be scsi. - | |||||
| Why does my Compaq with an HP tape give NOTICE: cha: SCSI bus has been reset ha=0 messages? | 1997-2003 | ||||
| - scsi bus reset - | |||||
| scsi disk errors -->Re vxfs problems like mesg 017vx_iupderr - /home2 file system inode 1588 marked bad | 1997-2004 | ||||
| - scsi disk errors -->Re: vxfs problems like: mesg 017:vx_iupderr - /home2 file system inode 1588 marked bad - | |||||
| scsi disk performance tuning wio sar -->Re Performancequestion | 1997-2004 | ||||
| - scsi disk performance tuning wio sar -->Re: Performancequestion - | |||||
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| reset scsi bus ic initialization adaptec scsi -->ReAdaptec 2940U2W panic k_trap SCO 3.2.4.2 | 1997-2004 | ||||
| - reset scsi bus ic initialization adaptec scsi -->Re:Adaptec 2940U2W panic k_trap SCO 3.2.4.2 - | |||||
| ONStream tape drives -->Re need suggested tape drivereplacement for Exabyte 8505 on OS 5.0.0C - plug and play,please! | 1997-2004 | ||||
| - ONStream tape drives Exabyte 8505 will not work with Unix! - | |||||
| 5340 scsi controller osr5 bootstrings | 1997-2004 | ||||
| - 5340 scsi controller osr5 bootstrings - | |||||
| replacing a scsi drive with a larger disk -->Re Swappinga hd in 5.0.6 | 1997-2004 | ||||
| - replacing a scsi drive with a larger disk -->Re: Swappinga hd in 5.0.6 - | |||||
| scsi problems -->Re Panic from SCSI Problems | 1997-2004 | ||||
| - Have any significant changes been made to the location. eg new airconditioner, new microwave oven nearby, any major electrical work? - | |||||
| probe scsi disks odt3 -->Re Probing SCSI HD on SCO ODT3 | 1997-2004 | ||||
| - Well, as long as you don't touch the partition, the next thing you get is a divvy table- that would tell you for sure what you are looking at. Double check /etc/conf/cf.d/mscsi to be sure the right stuff got in there. - | |||||
| mkdev hd fisk no such device -->Re SCSI HardDrive | 1997-2004 | ||||
| - I suspect you may be confused as to what the first invocation of mkdev hd did, which really was nothing more than to trust you: in other words, you said "there's a scsi disk attached to this controller and it has this id, etc." and mkdev hd said "Kewl- I'll add that to /etc/conf/cf.d/mscsi and build a new kernel which can access that". - | |||||
| Slow devices on SCSI bus -->Re Problem running 2 Adaptec3950U2 with SCO 5.0.5 | 1997-2004 | ||||
| - Slow devices on SCSI bus -->Re: Problem running 2 Adaptec3950U2 with SCO 5.0.5 - | |||||
| ISA 1542C for SCSI tape -->Re Can I use an Adaptec1542CP in an SCO OpenServer 5.0.6 box? | 1997-2004 | ||||
| - ISA 1542C for SCSI tape -->Re: Can I use an Adaptec1542CP in an SCO OpenServer 5.0.6 box? - | |||||
| 32 bit vs 64 bit scsi dma 2940 pci -->Re Is U160 REALLYFaster than Ultra-Wide on SCO? | 1997-2004 | ||||
| - 32 bit vs 64 bit scsi dma 2940 pci -->Re: Is U160 REALLYFaster than Ultra-Wide on SCO? - | |||||
| bad sectors ide drive -->Re scsi vs ide | 1997-2004 | ||||
| - bad sectors ide drive -->Re: scsi vs ide - | |||||
| scsi adaptor htfs filesystem crash -->Re *** HELP! HTFSFilesystem Crashed. *** | 1997-2004 | ||||
| - scsi adaptor htfs filesystem crash -->Re: *** HELP! HTFSFilesystem Crashed. *** - | |||||
| defragmenting scsi disk database raw partitions -->ReDefrag Continued. Speed is Speed | 1997-2004 | ||||
| - defragmenting scsi disk database raw partitions -->Re:Defrag Continued. Speed is Speed - | |||||
| defragmentation hard drive scsi elevator seek -->ReDefrag Software For Sco | 1997-2004 | ||||
| - defragmentation hard drive scsi elevator seek -->Re:Defrag Software For Sco - | |||||
| obdr tapes -->Re SCSI tape drives - DDS - OBDR &Stuff | 1997-2004 | ||||
| - The original "DAT" drives were just that. They used DIGITAL AUDIO TAPE. There were no standards, and vendors tended to use different compression methods. Cross vendor compatibility was almost nil. - | |||||
| SCO_OSR5 sconf scsi probe | 1997-2004 | ||||
| - "sconf" loop to dump out the contents of the in-kernel SCSI configuration. (`sconf` really ought to have a flag to do so automatically.) `sconf -v` is something else entirely -- it is an order to actually go out and probe the SCSI buses, while what I've just done is to dump the tables already in the kernel. It's possible that the `sconf -v` probe doesn't scan buses >0; or maybe it miscommunicates with "dpti" as to how many buses your adapter has. - | |||||
| 1542 scsi adaptor -->Re Errors after moving HD | 1997-2004 | ||||
| - Be aware that all 1542's are not the same. The 'C's' were not very good, the 'CF' was a pretty good card and the 'CP's' were more of a problem. - | |||||
| lvd single ended 2940 ultrawide scsi -->Re Q re AHA-2940W vs 2944W controller / singles ended vs differential | 1997-2004 | ||||
| - How Low Voltage Differential SCSI (LVD) differs from older SCSI interfaces. Mixing LVD and older adapters. - | |||||
| defragment scsi disk -->Re Defrag Software | 1997-2004 | ||||
| - Comments on SCI seek optimizations and their effect on fragmentation - | |||||
| panic 2940 luns -->Re Panic With Adaptec 2940 | 1997-2004 | ||||
| - 2940 scsi adaptor panics if tape drive not connected0 - | |||||
| SCSI disk performance -->Re Disk Xfer Rates vs Bus speed | 1997-2004 | ||||
| - Old SCSI disk performance benchmarks make interesting historical reference. - | |||||
| Booting SCSI drive when ID is not 0 -->Re Installation problems (free UW 701) | 1997-2004 | ||||
| - SCO systems expected SCSI drives to be at ID 0 by default. You could force it to boot from another id, though.0 - | |||||
| SCSI speeds -->Re SCSI page | 1997-2004 | ||||
| - This is most often just evolutionary thinking and I've seen it in most major products. As capacity needs go up the devices get larger and larger until one day someone says - we can do just as much or more, more efficiently, with several smaller devices instead of one large device. - | |||||
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