Hidden Value – February 2004

 

Q: Does a 918LX have two slots for two F/W scsi cards?

 

A: Gilles Schipper replied:

 

It would need to be an RX. The LX has only a single full height slot.

 

 

Q: How can I find all the IMAGE databases on a system?

 

A: Michael Anderson replied, after several not completely precise answers:

 

Image database root files all have a unique filecode value, -400. Image datasets all have a value of -401. So if you want to find all IMAGE databases on a MPE system I would use the following command:

 

LISTFILE @.@.@;SELEQ=[CODE=-400];FORMAT=6

 

This will give you all the IMAGE root files and only the IMAGE root files. If you use something like "listf @01.@.@" you get the first dataset in the database, but also any file where the filename ends with "01", and that may or may not be a database file. Also, the MPE file system allows filecode representations to be alpha ("PRIV") and Numeric. When you see "PRIV" as a filecode it simply means that the numeric value of the filecode is negative, and again this can include non database file types.

 

 

Q: I have started testing the Eloquence database but am confused about naming conventions. The documentation says that data item names are limited to 15 characters, one less than TurboIMAGE. This seems odd. Am I missing something?

 

A: Chuck Ryan replied:

 

There is a "-T" option that provides naming consistency.

 

 

Q: What is the command to kill a session that refuses to die!

 

A: Ernie Newton and Sam Knight replied:

 

If it is a VT or Telnet session, try NSCONTROL KILLSESS=#Snnnn

 

 

Q: Does anyone know what is the maximum sized LUN that MPE 7.5 will recognize?  In other words, can I have 144 GB LUNs on a 997 via a SCSI connect to a EMC Symmetrix?

 

A: Guy Paul replied:

 

Jim Hawkins of vCSY gave a nice presentation on the I/O roadmap for MPE. You should be able to have up to a 146GB ldev. See http://jazz.external.hp.com/mpeha/papers/HPWorld2003_hawkins_files/frame.htm. Donna Garverick makes a good point regarding performance being the limiting factor, in this case FWSCSI running ~13mb/sec. Trial and error over the years has taught me to put no more than 70GB/FWSCSI on a busy system. If you have Hyper-Volume extension on your EMC I would suggest slicing the mechs up a little smaller.

 

 

Q: I have a couple of configuration questions about an N4000 that we're going to be installing soon. Does it make sense that an A6795A (PCI 4x 2Gb/s Single-port Fibre Channel Adapter) would be installed in PCI slots 1 or 2? The systems docs indicate that PCI slots 1 and 2 are 2x PCI slots; so the fibre channel would be limited to 1Gb/s. Does it make sense to have two fibre channel cards for a single VA7110?

 

A: Craig Lalley and Guy Paul replied:

 

The VA7110 does have two fiber connections, and both CAN be used.  However, in order to be consistent with HP's maintenance criteria, you should have one connected to a Command View workstation. Everything in Command View can be done through the serial port on the VA7100, except for logging. It is also a lot eaiser to define LUN's graphically (Command View) as opposed to the command line (cryptic) language on the serial port. Also on the VA7110, one of the fiber channels is "passive" and is for the command view workstation. I would not install a A6795A HBA into slots 1 or 2. Slots 3-12 are the twin-turbo (4x) slots you should use.

 

 

Q: I currently run two 979-400s. Both are at OS 6.5 pp 2, with some additional reactive patches. I am aware that HP plans to drop support on OS 6.5 at the end of 2004. Our company's immediate goals and plans have not been set which means I will be running these systems well beyond the end of 2004 deadline and perhaps up to the end of 2006 hardware deadline. I am looking for recommendations about which OS I should upgrade to, 7.0 with which power patch or 7.5 with which power patch.

 

A: The consensus response, first stated by Donna Garverick is:

 

MPE/iX 7.5 PP1 is the better choice. In many respects, it's nearly identical to 7.0 so there's no compelling reason to install the older version. Furthermore, most large sites are using MPE/iX 7.5 so it is probably getting a better workout.

 

 

Q: If I do the following:

 

:SYSGEN CONFIG,TESTCFG

SYSGEN> IO

IO>HO

IO>EXIT

SYSGEN>KEEP

SYSGEN>TAPE

 

Which group am I creating the SLT from, CONFIG or TESTCFG?

 

A: Jon Ose replied:

 

TESTCFG. docs.hp.com is your friend:

 

"The command for the SYSGEN utility is SYSGEN. SYSGEN has four positional parameters:

 

  SYSGEN    [basegroup] [,newgroup ] [,inputfile] [,outputfile]

 

"The basegroup parameter specifies the group in the SYS account that contains the configuration data file set to be used or changed. The newgroup parameter specifies the group used to store data. If you do not specify newgroup, SYSGEN stores any configuration changes in the base group by default. If the group specified by newgroup already exists, SYSGEN asks, at keep time, whether or not it should overwrite that group with new information. At keep time, if the user does a KEEP with no parameters, SYSGEN keeps the current base group unless newgroup was specified, in which case the group given is used."

 

 

Q: Since I'm replacing my old Model 10 with a Model 20 on MPEXL_SYSTEM_VOLUME_SET, this will of course require a Re + INSTALL. What's the best way to re-instate my network config files?  Just restore NMCONFIG and NPCONFIG? Can I use my old CSLT to re-add all my old non-Nike drives and mod the product IDs in Sysgen, or do I have to add them manually after using the Factory SLT?

 

A: Gilles Schipper replied:

 

- using your CSLT to install onto ldev 1

- modify your i/o to reflect new/changed config.

- reboot

- use volutil to add non-ldev1 volumes appropriately

- restore directory or directories from backup

- preform system reload from full backup - using the keep, create, olddate, partdb,show=offline options in the restore command

- reboot again

 

No need for separate restores of specific files.

 

 

Q: Does anyone know of a way to successfully restore files from a tape mounted on a remote system? When I try, I get (S/R 2275) LABELED MEDIA IS NOT CURRENTLY SUPPORTED FOR REMOTE DEVICE "11".

 

A: Donna Garverick replied:

 

Unfortunately, the error message says it all. It only works with unlabeled tapes.

 

 

Q: Can someone help me with storing and restoring a Allbase DBE.

 

A: Denys Beauchemin replied:

 

There is a utility call sqlutil.pub.sys, which should be of help to you.

 

 

Q: We had another hard drive fail this weekend. It was in an enclosure of old 2GB drives that we really did not need, so I just unplugged them and rebuilt my volumes without them. However, when I boot up I get error messages that path 10/4/0.20-26 can't be mounted. How do I get rid of these messages?

 

A: Gilles Schipper replied:

 

You can safely ignore the messages, but if you want them not to reappear, simply remove those devices from your i/o configuration via sysgen, keep the new configuration to config.sys and reboot with a start norecovery. When you're back up again, you should create a new slt tape.

 

Paul Edwards added:

 

Use SYSGEN with DOIONOW or IOCONFIG to delete them. No reboot is required.

 

 

Q: I am trying to put together a 4/40 tape library. It came with one tape drive. When I add the second it says I need to update the firmware. There are two passwords on a 4/40, one is the administator password, the other is the "service" password. I can't seem to get the "service" password. I would think that I need that password to update the firmware. Has anyone ever reset the service password on a Surestore 4/40?

 

A: Bob J replied:

 

You do not need a password to update the firmware. That admin password can be changed but most folks just leave it at 1234.

 

 

Q: The port for telnet on our 3000 is set to a different value then 23, but it is set to 23 on our 9000. When I try to telnet from the 3000 to the 9000 I get the following message: Trying... telnet: Unable to connect to remote host. If I switch the port for telnet to 23 on the 3000, it works great. My question is, can I run telnet on two different ports on either box so that I can maintain my non-standard port on the 3000, but still allow telnet to run between the two boxes? If not, is there another way to make this work?

 

A: Jeff Kell replied:

 

Just 'telnet your.3000.name nnn' where 'nnn' is your 'nonstandard' telnet port.

 

 

Q: I am sick of dealing with failing DDS drives. Can I just replace all my DDS drives with a DLT?

 

A: Gilles Schipper replied:

 

You can boot from a DLT drive, as long as it's a single-ended (SE) SCSI device. You cannot boot from a FWSCSI DLT drive - unless the HP3000 is an A-class or N-class. You do still need to keep at least one DDS drive, however, since HP and most third party vendors distribute software only on DDS and not on DLT.