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Q: PCs per Network Administrator ( Answered,   3 Comments )
Question  
Subject: PCs per Network Administrator
Category: Computers
Asked by: jaymann-ga
List Price: $10.00
Posted: 15 Jul 2002 10:53 PDT
Expires: 14 Aug 2002 10:53 PDT
Question ID: 39795
How many PCs can a PC Technician/Network Administer with network
management and remote control software available?

Request for Question Clarification by googlebrain-ga on 15 Jul 2002 11:08 PDT
Are you looking for a specific number of machines your Tech should be
able to support with your setup, or an industry average?

Request for Question Clarification by voyager-ga on 15 Jul 2002 11:15 PDT
Hallo Jaymann!

I think there might have been a problem when you posted your question
as it seems there's part of the sentence missing.

Anyways if you wanted to ask how many PC there can be per Network
Admin, you'll have to give us a few additional hints:

1. What kind of PCs? (especially: what OS?)
2. Are they identical installations?
3. What kind of network architecture?
4. What kind of protocol?
5. Is caring for the network all that your network admin has to do or
are there additional jobs?
6. What's the budget for management software? Is there already any
kind of management software installed?
7. Are you planning on expanding your nets?
8. Is the net connected to anything outside? (Internet, other
corperate nets, etc.)
9. What kind of security systems are in place?

I probably could think of a few others if you give me time. I worked
as a network admin for a few years while going to university and
administered everything from "dumb" network switch to a million dollar
parallel computer. Some details of network administration are
extremely work intensive, others are easy. Further data (besides a
clarification) is needed to answer your question.

voyager-ga
Answer  
Subject: Re: PCs per Network Administrator
Answered By: webadept-ga on 15 Jul 2002 12:42 PDT
 
Hi, interesting question.. 

I've been a network administrator for over a decade. As given in the
requests for clarification, there is much more to your question, than
simply "how many units", or even what OS. I found early that in
managing a network, most of the time spent is on the users, not the
system. Email viruses, programs from home, installed screen savers,
different versions of software, all of these add much more time to the
day, than simply taking care of a few machines.

A few years ago I took care of a network with 3 NT servers, a AS/400
and 6 remote offices, totaling 75 client machines. I was working on
the average 12-14 hours a day. Internet email, and fax servers were in
the mix as well as internet connection via a T1. Remote offices were
connected by T1. I had one assistant and one other person who was a
"computer buff" type to help.

There are many security and system upgrades that need to be done on
servers regularly if uptime is important. A system administrator needs
to be discerning on which upgrades to apply and which to "wait and
see", this takes research and study, which takes time. Had my system
described above been running on Win2000 the time would have been about
the same, though I would have been less stressed. On Linux, I might
have saved a few hours a day.

In an 8 hour 5 day a week time period, reasonably, one administrator
can take on 30 clients and two servers, one being a backup server,
with internet email and connection to the internet via a stable
connection such as ISDN/T1 or DSL. Daily backups, checking the
backups, restoration requests, file system sharing, printer connection
and service pack installations would be the extent of this time
period. If the users are allowed to install any software from home or
from the internet, then this time goes up. Way up.

If your administrator is also your user's "help desk" then this time
goes up as well. If he is on his own, then you should work with him
closely to find a point at which it is acceptable to "not answer the
phone" and to do his primary functions.

Much of this is based on an administrator who is experienced and knows
the systems he is dealing with well. Also, many upgrades and system
patches require after-hour installations to not interrupt the flow of
work during the day. So overtime is never really going to be optional.

Adding a web server to your system will add 6-8 hours per week to
administration tasks if he is not doing any of the development. Adding
phone system responsibilities to the mix add about the same.

Preventive administration generally takes more time than "putting out
fires" administration. Finding the cause of a specific break down or
bug, takes less time than adjusting the system so that break downs
don't occur. More OS's means more work in both areas.

If all the clients are on the same version of the same OS, then 30 is
a good number to start with. If there are, for instance a few Win98's
some Win2000's and the rest WinMX, then that adds much more to the day
of an administrator. Anyone who has gone through an upgrade of their
home PC to find that many of the programs installed before no longer
work, can understand this particular problem.


Links of interest

SAGE Job Descriptions
http://www.usenix.org/sage/jobs/jobs-descriptions.html

CYA for System Administrators
http://linux.oreillynet.com/pub/a/linux/2000/04/19/enterprise/CYA.html



Query on Google 
+"System Administration" +"Job Description"

webadept-ga
Comments  
Subject: Re: PCs per Network Administrator
From: alienintelligence-ga on 15 Jul 2002 11:05 PDT
 
Hundreds if nothing goes wrong ;-)

That doesn't happen too often, so
can you narrow down your question
a little, or throw some other
qualifiers in there?

-AI
Subject: Re: PCs per Network Administrator
From: jaymann-ga on 15 Jul 2002 14:14 PDT
 
Further clarifications;

Servers W2K/NT and NetWare (90:10 mix approx)
Clients: Windows 9x,NT W/S,W2K Pro, some XP Pro.
Locations: Multiple. Each location has 1-2 Servers and 20-40 PCs.
Connection to sites: T1 for Frac T1 (for network management only)
Management S/W: CA Unicenter NSM, Software Delivery, Remote Control,
etc.
Help Desk: Does not include end-user help desk for apps. Network
Management only.

If we had 50 locations within 1.5 hrs drive then how many Network
Admins/Network Techs we need for on-site and how many for remote
management.

Hope this helps.
Subject: Re: PCs per Network Administrator
From: snapanswer-ga on 16 Jul 2002 23:14 PDT
 
The "scientific" way to do this would be to list tasks per admin and
how many hrs/week spent on given tasks you anticipate.  Then figure
the number of people you need from there.  But, that's not as exciting
as idle speculation, so here we go...

Another important question to ask yourself is, "How long are you
willing to have systems down if there is a failure?" or said another
way, you need to identify your required level of service.  Why does
this matter?  Well, are you staffing for the unlikely event that all
50 sites have incidents on the same day and all must return to
function in the same day... or, are you staffing for a team that rolls
through incidents on a priority basis... some high-priority items
fixed in hours, some low priority items fixed in weeks?  Do you need
8hr/5day staffing or 24hr/7day staffing?

When you added details, it seemed like you are planning to have one
admin at each site.  If they aren't doing helpdesk work and helping
users, this person is likely not to be very busy.  I recently managed
a network of two locations, 9 servers, two T1 lines, telecom switch,
90 workstations, and 20 laptops and remote/home users.  Once things
are setup and functioning, I think I spent 8 hours a week at most on
network issues... the majority of time is spent with Helpdesk/Desktop
issues, which you indicate is not part of the job description for this
tech.

Given that, let's say that each tech could handle ten sites... that
would indicate hiring 5 techs, plus management and remote.  Budget for
3 extra, in case you find you need help.  Perhaps that's a nice number
to start with, measure the results, and increase staff if needed.  It
might break down like this:
1 IT Manager (rare travel)
1 Remote Operations Tech (rare travel, assists IT Manager)
1 Sr. Traveling Tech (reserved for crisis, handles Remote Ops
overflow, assists field staff remotely)
4 Traveling Tech (generally on the road, rarely at home office)
2 Open Reqs for Traveling Tech (have these budgeted, but don't hire)
1 Open Req for Remote Operations Tech

The traveling tech should only be dispatched for new workstation
installations or physical failures, correct?  Are you doing remote
backup, or does a tech need to visit each site weekly to pick up
backups?  Daily?  Monthly?  Again, a decision needs to be made about
level of service desired.  Is it the tech's job to put paper in the
printer, replace toner cartridges, deal with phone outages... all this
must be decided.  If it's something the receptionist can be trained to
do, go that route.

If you end up hiring more techs (because someone decides each site
must have a tech at all times) consider breaking these techs into
specialty teams, so they have their on-site duties, and then areas of
specialty training (a particular type of OS or software package,
networking, etc.)

Another way you might do it is to have staff members rotate either
daily or weekly into the Remote Ops position where they don't travel
during that time.  I can't tell if all sites are no more than 1.5 hrs
from a central office, or if the two offices furthest from each other
are 1.5 hrs from each other (makes a big difference).  If it's a 1.5
hr radius from the central office, that's a big radius.  You might
need to organize your techs by geographic clumps of sites.  Perhaps
some techs live near the more remote areas and don't really want to
come into the main office.  Each clump might have a satellite office
for one "regional clump" tech that he can call home when he's not
travelling between sites.

This all needs to be actively managed, and you need the input of your
IT manager.  Perhaps the IT manager or you believes that you should
staff so that workers have 3 days in the home office (for training or
hatred of driving) 2 days on the road, with exceptions made for
crises.  That's yet another staffing model.

I guess there are a lot of different ways to do this.  The IT manager
will need to actively manage this, and balance the preferences of the
staff and upper management.

Finally, of course, what can your budget handle?  This as much as
anything may dictate the answers about number of staffers and the
quality of service you can afford.  I will say this, in my experience,
it's better to staff in a manner that keeps people occupied and
busy... adding more people if needed; rather than overstaffing and
then cutting back.  Once people become accustomed to having a lot of
help and less to do, it can be difficult to switch to a busy pace
without feeling abused and resentful.

Hopefully this free advice has been worth more than nothing... <grin>

You may find these interesting:
Gartner Group study of support costs for dual-platform environment.
Note:  They assign .025 FTEs per desktop and find a range
18/PCs-per-tech to 77/PCs-per-tech.  If you had 1500PCs to manage,
according to their figures, you would hire between 20 and 80 techs. 
But, note that includes user desktop support.
http://www.bobrk.com/lmms/mac/gartner.html

Compaq offers a Total Cost of Ownership report with breakdowns from
Gartner and Forrester research.  They assign 34% of IT budget to
Admin/Tech Support.
http://www.compaq.com/tco/models.html

The magic 34% number is found again in a 2001 survey found in this
Internet.com article, "IT, Network Spending Headed Up, Despite
Economic Slowdown" by Michael Pastore:
http://cyberatlas.internet.com/big_picture/hardware/article/0,,5921_582631,00.html

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