CAD Software (maintained by MDCAD: Solid Edge, Microstation, EMS)
Citrix/Windows Terminal Server
Remote Access (applicable to Home Computers)
How do I do this?
Getting Started with Windows XP at SLAC
User FAQs begin
Logging onto SLAC Web Server from Windows XP computers
When a Windows XP computer authenticates to a SLAC Web Server, at the authentication screen you need to type in
Then you can put in your password as usual.
Windows XP by default puts in the local machine account instead at the login screen (i.e., 'localmachine\your_username'), so you have to qualify it with 'slac\youruseraccount'.
Symantec AntiVirus 9.x - Overview
Symantec AntiVirus can protect your computer from destructive programs known as viruses and Trojan horses, and can protect against malicious Active X and Java applets. SLAC users are included in the Stanford campus Symantec AntiVirus Corporate Edition licensing.
For centrally-managed Windows computers at SLAC, the software is automatically installed and configured. There is no installation or configuration needed by the user. If you have any questions, please contact your local administrator.
For home computers, users should install from the Xweb. The installed version of Symantec AntiVirus will already be pre-configured for 'Live Updates', so there is no configuration needed by the user. Beyond making the software available on the Xweb, SCS offers no support of the software for home computers. Home users, please note that you must de-install any existing anti-virus program through 'Add/Remove Programs' on your computer before installing Symantec AntiVirus.
Other topics on Symantec AntiVirus:
Symantec AntiVirus - How do I know this is installed and running properly?
Checks for the installed program
1) On your local drive, Program Files directory->Symantec AntiVirus sub-directory, the VPC32.exe program is present.
2) Go to 'Start' button, select 'Settings', select 'Control Panel', select 'Administrative Tools', select 'Services'.
2 Symantec services ('SavRoam', 'Symantec Antivirus', 'Symantec Antivirus Definition Watcher') appear under 'Services', with 'Status: Started' and 'Startup Type: Automatic'.
3) Press Control/Alt/Delete keys to bring up the 'Windows Security' dialog box, select 'Task Manager'. Under 'Processes', 3 Symantec processes (DefWatch.exe, Rtvscan.exe and SavRoam.exe) appear.
If you have any problems, please contact your local administrator.
Check for up-to-date 'Virus Definition File'
In order to keep up with new virus, the Symantec AntiVirus program will
need to regularly download up-to-date virus definition files as part of the
'LiveUpdate'. To check that the 'Virus Definition File' is up-to-date,
bring up the Symantec AntiVirus window by clicking on the executable file
Check that the date listed under : ''Virus Definition File: Version' is recent.
'LiveUpdate' is pre-configured to check for updates hourly, if there is a network connection. You can click on the 'LiveUpdate' button to do a manual update. More information. If you have any problems, please contact your local administrator.
Symantec AntiVirus - How are 'LiveUpdates' done for off-site computers?
'LiveUpdate' is configured to first check the SLAC server for downloads, and if that is not available it will go to the Symantec server for downloads. Therefore computers within the SLAC internal network will primarily use the SLAC server, and computers off-site will go to the Symantec server. 'LiveUpdate' is pre-configured for you to check for updates hourly. You can click on the 'LiveUpdate' button to do a manual update. More information.
Symantec AntiVirus - How do I do a scan?
To scan you local drives, you can right click on the drive or folder you want to scan within 'Windows Explorer', select 'Scan for viruses'. Symantec AntiVirus will appear in the Task Bar, click on the icon to bring up the scan window.
Alternatively you can scan within the Symantec AntiVirus program.
Note: There is no scheduled scan of local drives on user computers. But users may want to do a scan themselves if they suspect any problems.
Users will not be able to scan the network drives (e.g., V drive or home directory Z drive) since this will impede performance on the servers, and anti-virus procedures on the servers are maintained by the SCS system administrators. The realtime scanner on the local computer automatically scans every file that has been opened, moved, copied, executed, or deleted. In addition, the servers are also running Antivirus software. If one really wants to scan a file, it can be copied to the local computer and then right-click and select 'Scan for viruses'. So in essence that file is scanned twice, once by the local computer and once by the server when one copies the file there, and then again by the local computer when the file is accessed.
Installing software with 'Add/Remove Programs'
Your local administrator has asked for certain programs to be made available to you via 'Add/Remove Programs'. You do not need administrator privilege on the computer to install these programs. Please check what is available for your SLAC group.
To install these programs, go to the 'Start' menu -> Settings -> Control Panel -> Add/Remove Programs
Choose 'Add New Programs', and a list of programs available to you will be listed. Click on the program you need, then click on 'Add'.
Please contact your local administrator if you have questions about the list of programs.
-Why is Netscape Navigator not included in the Windows
XP BootCD installation?
A. As announced at the August 5,
2002 "Town Hall" meeting on the Windows migration plan, SCS plan to
offer only the Internet Explorer browser option on the system
installation (BootCD) disks that it provides to system administrators
for installing Windows XP on workstations. Netscape is not planned to be
installed by the BootCD. The effort of supporting a second browser
across all 1700 Windows systems at SLAC is difficult to justify
considering that there is already a fully functional browser delivered
with the operating system. Moving to Netscape Navigator 6 would require
a large effort in testing, rollout, and problem resolution since that
version of the browser was totally rewritten from the ground up, with a
new user interface, and a completely different rendering engine. It
would also require additional long-term maintenance to stay current with
security fixes. Staying with the 4.79 version of Navigator is not
acceptable from a security point of view (fixes are no longer provided
Q. Am I allowed to install Netscape Navigator on my workstation if I want to?
A. You or your department may
choose to install and maintain an alternative browser. There is no
prohibition against doing so, though you will be required to install
security patches when serious problems are discovered.
Q. Is it true that there are no new fixes for Netscape 4.7?
A. The last version of the 4.x
series of Netscape Navigator is 4.79, released in November of 2001.
Netscape does not issue patches to its browser, it only releases new
versions (even if the modifications are minor). We're fairly certain
that there will be no more releases of the 4.x browser � with Navigator
7 nearly ready for release they can't spend effort patching a four and a
half year old program. Also, 4.79 lacks support for XML and has
incomplete support for CSS.
Q. BootCD computers will not have Netscape. How about the ones that are have Netscape and not being reinstalled with the BootCD?
A. All workstations on site
will be installed with the BootCD to Windows XP. Until your workstation
is converted to Windows XP whatever programs were installed will remain
there unless you choose to remove them (unless Computer Security
requests its removal).
Q. Will mods to web programs continue to be de-bugged on Netscape? How much longer?
A. With 88.5% of the browser
market belonging to IE (including 3.5% due to AOL browser) vs. 7.3% for
Navigator (all versions -- 2.6% for 4.x) you can draw your own
conclusions about how much testing will be done. See browsers war for
details. Presumably SLAC authors will continue to test Navigator for a
while, but with Mozilla as a likely candidate for replacing Navigator on
UNIX, it is not clear how much testing web authors can do.
Windows Explorer disappears when Roxio CDR/CDRW Software is installed
Q. Windows Explorer disappears on new Dell machines installed with Plextor CDRWs and Roxio software:
(submitted by Ken Zhou)
Updates for software may come out several times a year. Some of the updates are security-related, and are required by SLAC Computing Security. Where possible, updates will go through a process of testing, and user notification before it is rolled out.
Automatic security updates are rolled out to Windows client computers that are in the SLAC Active Directory on a regular schedule. The updates may require that the client computer be rebooted after the installation.
Desktop users should
SLAC Schedule for Hot Fix Rollouts
Please note that:
Microsoft releases 2 types of updates:
All Windows servers need to be updated also with the latest service packs and hotfixes, and maintain new patches as they are released. The outage will affect ALL Central Windows servers. The outage will include all Windows file server services. Services affected will also include printing, VPN, Citrix, Windows web servers and all other central Windows services. The date and time of the outage is on the third Wednesday of each month from 6:00 PM to 9:00 PM. All services during this time will be intermittent and should be considered unavailable.
All files stored on the central Windows files servers need to be saved and closed before 6:00 PM on each third Wednesday of the month.
All central Windows file services and the WTS/Citrix farm will be affected. This includes the U, V, X, and Z drives. These consist of the Pub, Groups, Home, Network Install and the NLCTA Backup Space directories.
The WTS/Citrix farm will be unavailable from 6:00 PM - 9:00 PM on the third Wednesday of every month. New connections to the farm will not be allowed starting at 5:30 PM on the scheduled outage day.
EPN systems will follow a different schedule that will be announced in a timely manner to users of those systems.
What to do if a computer is hacked?
For virus infections, see the Anti-virus FAQ's.
For instructions on adding a printer from within a Citrix session, please refer to the Citrix FAQ.
From the Start Menu:
e.g., printers in Building 084 (Central Lab Annex)
11. Select the printer you wish to add and click OK.
What do I do when I suspect the print server is down?
The recommended practice is for printers to be served from the SCS central printservers (rather than from department printservers or peer-to-peer printing).
For printers that are on the SCS printservers, each printer is served from 2 central print servers (in the Server Name field, they are listed as scs050print01 and scs050print02) to provide a backup print server when one of them is not working. When you suspect that the print server you are connected to is down, go through the procedures above and select the printer being served from the other print server.
Windows Disk space
SCS maintains several varieties of permanent and temporary disk storage on the central SLAC Windows systems, each appropriate for different levels of ownership, data access, lifetime, and backup. The purpose of this FAQ is to aid you in understanding the Windows storage repositories available from SCS and their proper usage.
Z drive user home directories
Each user has a home directory (Z drive) on the Windows file servers. The home directories are a place to store data specific to the individual user. Data that requires access or participation of multiple users may be better suited for a Group directory. Each user at SLAC, upon receiving a Windows computer account, receives a user home directory. The initial repository contains 500MB of space.
You may request an increase in quota by filling out the Windows Space Request Form. User directories above 1 GB are discouraged, and repositories above 5 GB require special approval. Instructions on finding out the quota for your Z drive user home directory.
All Users Home Directories (U drive)
This is the logical view of all SLAC users home directories A-Z shared through Microsoft Distributed File System (Dfs). This is for the convenience of accessing other users� home directories on the network file servers. If you delete files from your own user home directory on the U drive, it is the same as deleting files from your Z drive user home directory.
Each group can request a group directory (V drive) for the storage of group files. Groups space is better suited for projects that encompass more than 1 person or data that needs to be shared with more than 1 person. Each new group repository will initially receive 10 GB of storage. Each year additional storage will be procured (amount of storage procured will depend on market cost) and distributed to each group repository. If data growth exceeds an individual groups limit then additional storage can be procured at the expense of the individual group.
Reports of disk usage will be e-mailed to V drive group directory owners monthly and yearly data planning sessions will be held. All requests for permissions changes to the V drive should be sent to the V drive group directory owners.
You may request an increase in quota by filling out the Windows Space Request Form.
Scratch space is space on the central Windows file servers that is not backed up. Groups may request scratch space (Windows Space Request Form), depending on the expected data size and growth there may be a cost.
With the exception of scratch space, all central Windows repositories are backed up on a regular basis. You can restore directories and files your self by following these instructions or you can request restoration of any of one of your central Windows directories or individual files by filling out a Help Track request. Please include a range of dates from which you want the directory or file restored. We will restore the applicable information into a temporary location so that you can move the data.
SCS does not backup files stored on the local drives (e.g., C drive).
Private Workstation Space (e.g., local C drive)
As the raw cost of disk space falls, and the size of low-end disks increases, you may be tempted to use the "left-over" space on your local disks of your computer. Allocating this space as a large scratch area is a reasonable way to do so.
However, SCS strongly recommends that you not store any non-temporary data on your workstation. Here are some of the reasons:
If you feel your application requires the use of local storage (e.g., for performance reasons) we recommend that you: buy and install a second hard disk so that the system can be re-installed without overwriting your data; and develop and implement a procedure for backing up your data.
Notification of network disk space usage?
Upon reaching 75%, 85%, 95% and 100% of your disk quota you will receive an e-mail informing you of:
Owners of group and user repositories can at any time request more reports regarding their disk usage. SCS needs to plan with you in order to allocate the right kind of disk space, and to predict disk space growth (see Real Costs of Disk Space). For example, space for a project involving more than one person should usually be allocated as group space rather than personal space; and large data files used by I/O-intensive programs should probably not be stored on the Windows file servers at all.
As a general rule, we do not allocate more than 2GB to an individual's home directory; such large requests are nearly always an indication that there is a better way of meeting your storage requirements. Instructions on finding out the quota for your Z drive user home directory.
Finding out the quota for your
Z drive user home directory?
The first time you use this, a shortcut will be created in the All
Subsequently, you will be able to go into 'Start button -> Programs -> Find User File Space Quota' to run this utility. You will only be able to check on your own Z drive user home directory.
Please do not
use the Z drive and other network drives for storing:
--When cleaning up your Z drive, please do not work off the U drive except to copy files from another user. The U drive is just a reflection of ALL USER home directories (their Z drives). Therefore, if you delete a file on the U drive, you will be deleting the same file on the Z drive.
up periodically so that this RAID disk space does not carry a lot of
temp and junk files, and add to the backup load.
--It is proper to use the Z drive user home directory and other network drives for business-related user data files. The Z drive user home directory and other SCS-maintained network drives (e.g., V drive for group space) are backed up nightly, so users should store work data here rather than on the local drive of their computers (which is not generally backed up and therefore can be lost if the computer crashes). If you need file(s) restored from the network drives, please submit in a Help Track request.
--If these are
files used by your department, it is better to keep them on the V drive
Having files in a user home directory just makes it even harder to clean up
home directories and delete user accounts when people leave. Ask your
department Windows Administrator regarding your department group space on
the V drive .
If you need file(s) restored, submit in a .
If you need file(s) restored, submit in aHelp Track request
--In order for
administration duties to be performed on the file servers, the
permissions for files and directories on the central servers must include:
You can use the 'Search Companion' feature in Windows XP built into Explorer to help you track down files for clean up (obsolete files, large size files, etc.).
Click on the 'Start' button, select 'Search'.
Select 'All files and folders' and the 'Search Companion' panel presented to you will allow you to build a set of search criteria (filename, file content, location, date modified, file size, type of file, etc.). Results of the search will appear in the right-hand panel.
To get the size of your Z drive home directory, go to the U drive and select your own home directory. Right click and select 'Properties'. (You cannot do this directly from the Z drive because the network share is established at this level.)
Alternatively you can use the DIRUSE command, which has the ability to list the sizes of all sub-directories in one command. The DIRUSE command is available to centrally-managed Windows XP machines. For machines that are not centrally-managed, please download DIRUSE from the http://xweb.slac.stanford.edu
Start button->Programs->Accessories->Command Prompt
You can look up DIRUSE 'Help' file with the command
Example of the DIRUSE command for listing sizes of directories.
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