| what this alert is to provide you with an overview of the new security bulletin being released (out-of-band) on December 29, 2011. |
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Friday, December 30, 2011
What is the purpose of this alert
Thursday, December 29, 2011
Difference between Seek Time and Latency
Seek Time
The seek time of a hard disk measures the amount of time required
for the read/write heads to move between tracks over the surfaces of the
platters. Seek time is one of the most commonly discussed metrics for hard
disks, and it is one of the most important positioning performance
specifications. However, using this number to compare drives can be somewhat
fraught with danger. Alright, that's a bit melodramatic; nobody's going to get
hurt or anything. :^) Still, to use seek time properly, we must figure out
exactly what it means.
Switching between tracks requires the head actuator to move the head arms
physically, which being a mechanical process, takes a specific amount of time.
The amount of time required to switch between two tracks depends on the
distance between the tracks. However, there is a certain amount of
"overhead" involved in track switching, so the relationship is not
linear. It does not take double the time to switch from track 1 to track 3 that
it does to switch from track 1 to track 2, much as a trip to the drug store 2
miles away does not take double the time of a trip to the grocery store 1 mile
away, when you include the overhead of getting into the car, starting it, etc.
Seek time is normally expressed in milliseconds (commonly abbreviated
"msec" or "ms"), with average seek times for most modern
drives today in a rather tight range of 8 to 10 ms. Of course, in the modern
PC, a millisecond is an enormous amount of time: your system memory has
speed measured in nanoseconds, for example (one million times smaller). A 1 GHz
processor can (theoretically) execute over one million instructions in a
millisecond! Obviously, even small reductions in seek times can result in
improvements in overall system performance, because the rest of the system is
often sitting and waiting for the hard disk during this time. It is for this
reason that seek time is usually considered one of the most important hard disk
performance specifications. Some consider it the most important.
Latency
The hard disk platters are spinning around at high speed, and the spin speed
is not synchronized to the process that moves the read/write heads to the
correct cylinder on a random access on the hard disk. Therefore, at the time
that the heads arrive at the correct cylinder, the actual sector that is needed
may be anywhere. After the actuator assembly has completed its seek to the
correct track, the drive must wait for the correct sector to come around to
where the read/write heads are located. This time is called latency.
Latency is directly related to the spindle speed of the drive and such is
influenced solely by the drive's spindle characteristics. This operation page
discussing spindle speeds also contains information relevant to latency.
Conceptually, latency is rather simple to understand; it is also easy to
calculate. The faster the disk is spinning, the quicker the correct sector will
rotate under the heads, and the lower latency will be. Sometimes the sector
will be at just the right spot when the seek is completed, and the latency for
that access will be close to zero. Sometimes the needed sector will have just
passed the head and in this "worst case", a full rotation will be
needed before the sector can be read. On average, latency will be half the time
it takes for a full rotation of the disk.
Sunday, December 25, 2011
Saturday, December 10, 2011
Dear Friends
This is what happening in the punjab , I am feeling ashamed after seeing the video on facebook which shows ,how shamelessly a Akali Dal Badal Member & Sarpanch of the Village Slaps a ETT Teacher while she was waiting for the Harsimrat Kaur to tell her their pains & agonies.Watch what the police was doing at the moment.
Pls dare to step up against these kind of bastards.
Best Regards
Gurbinder Sahrma
This is what happening in the punjab , I am feeling ashamed after seeing the video on facebook which shows ,how shamelessly a Akali Dal Badal Member & Sarpanch of the Village Slaps a ETT Teacher while she was waiting for the Harsimrat Kaur to tell her their pains & agonies.Watch what the police was doing at the moment.
Pls dare to step up against these kind of bastards.
Best Regards
Thursday, November 24, 2011
A VERY SHAMEFUL FACT ABOUT CHINA
It's the shameful secret that those in the international fur trade do their best to hide.
Cats and dogs in China – more than 2 million individual animals this year alone – will be killed for their fur. Animals like the ones we share our homes with as beloved family members are being routinely abused and slaughtered for their fur.
This cold fact has been witnessed repeatedly by investigators from PETA Asia and independent animal protection organisations around the world.
PETA is leading the campaign against the bloody fur industry. Please support our efforts for all animals today with a special gift to bolster our life-saving work.
The animals suffering in these markets can't tell their own story, so I'll relay to you just some of what PETA Asia investigators have documented:
"Workers stuffed hundreds of terrified animals into cages to make the trip to the Chinese animal markets. No food or water was provided." "The cages were packed so full that the animals couldn't move inside. And dying or dead animals were packed in with the living." "When they arrived at the market, the cages were tossed 10 feet from the tops of the trucks to ground below, shattering the bones of the fearful animals inside." "At the market, the killing methods used shocked even our most seasoned investigators – bludgeoning and even skinning the animals while they were still alive!"
All these horrors take place so that someone can have a fur coat or fur trim on a hat. It's outrageous and must be stopped.
The skins of these animals find their way to the international clothing retail markets and are sometimes misleadingly labelled as anything from "Asian jackal" to "rabbit".
I know that it's hard to read about this cruelty. But I want you to know how you can be a part of ending this misery – by supporting PETA's work to save these and other animals from being abused in the name of a violent, greedy industry built on suffering. Please send a special gift to help fund PETA's ongoing campaigns to stop the suffering of animals in China and around the world.
We're leading eye-opening campaigns against retailers and designers who still use fur, and we've convinced others to eliminate or pledge never to use fur and exotic skins in their collections. We hold protests and educate the media and the public about the ugly truth behind the fur industry.
Of course, ending this cruel killing of animals will require a sustained and monumental effort. But we're up to the task and hope that you will stand with us.
With your special gift today, you'll help PETA continue to fight against the suffering and abuse of animals wherever and whenever it occurs.
Thank you for everything that you do for animals.
Kind regards,
Gurbinder Sharma
Volunteer PETA INDIA
09876023524
.
Cats and dogs in China – more than 2 million individual animals this year alone – will be killed for their fur. Animals like the ones we share our homes with as beloved family members are being routinely abused and slaughtered for their fur.
This cold fact has been witnessed repeatedly by investigators from PETA Asia and independent animal protection organisations around the world.
PETA is leading the campaign against the bloody fur industry. Please support our efforts for all animals today with a special gift to bolster our life-saving work.
The animals suffering in these markets can't tell their own story, so I'll relay to you just some of what PETA Asia investigators have documented:
"Workers stuffed hundreds of terrified animals into cages to make the trip to the Chinese animal markets. No food or water was provided." "The cages were packed so full that the animals couldn't move inside. And dying or dead animals were packed in with the living." "When they arrived at the market, the cages were tossed 10 feet from the tops of the trucks to ground below, shattering the bones of the fearful animals inside." "At the market, the killing methods used shocked even our most seasoned investigators – bludgeoning and even skinning the animals while they were still alive!"
All these horrors take place so that someone can have a fur coat or fur trim on a hat. It's outrageous and must be stopped.
The skins of these animals find their way to the international clothing retail markets and are sometimes misleadingly labelled as anything from "Asian jackal" to "rabbit".
I know that it's hard to read about this cruelty. But I want you to know how you can be a part of ending this misery – by supporting PETA's work to save these and other animals from being abused in the name of a violent, greedy industry built on suffering. Please send a special gift to help fund PETA's ongoing campaigns to stop the suffering of animals in China and around the world.
We're leading eye-opening campaigns against retailers and designers who still use fur, and we've convinced others to eliminate or pledge never to use fur and exotic skins in their collections. We hold protests and educate the media and the public about the ugly truth behind the fur industry.
Of course, ending this cruel killing of animals will require a sustained and monumental effort. But we're up to the task and hope that you will stand with us.
With your special gift today, you'll help PETA continue to fight against the suffering and abuse of animals wherever and whenever it occurs.
Thank you for everything that you do for animals.
Kind regards,
Gurbinder Sharma
Volunteer PETA INDIA
09876023524
.
Tuesday, November 22, 2011
HANDS ON SCRIPT
Know your back panel
You’ve probably faced problems when shifting your comp or getting a new peripheral as to which cable goes where and what the empty ports might be for. If you look closer you’ll realise that it’s not as complicated as it seems. The back panel has been built in such a way that each port/ socket is built to accommodate only one connection/ wire … the one that it’s meant to!
A word of advice: Remember not to force any connectors into any of the given ports – they are designed to only go in one way. And if they do not fit easily, you are surely putting the wrong connector in the given slot or vice versa.
So what goes where?
The PS/2 ports for keyboard and mouse
If you look towards the top of the back panel, there are normally two PS/2 ports—one for the keyboard and one for the mouse. The two ports are colour coded, so you cannot mistake one for the other (blue for keyboard and green for the mouse). As a rule of thumb, the PS/2 keyboard port is the lower port while the PS/2 mouse port is above it.
Attaching the non-PS/2 Keyboard
If you don’t have a PS/2 mouse or keyboard, you won’t have any problem recognising the non-PS/2 port for the keyboard. The keyboard fits in properly into the round port provided for it. This port is located near the top of the back panel right below the power connector.
Attaching the mouse
The non-PS/2 mouse fits into what is known as the COM port. You can recognize the COM port by the fact that it has pins in it, so your mouse fits into it properly. You will normally have a 9-pin COM port and a 25-pin COM port. The mouse fits into the 9-pin port. Normally, the port will have an indicator, which will tell you which side to keep up when putting in the mouse cable. In case it doesn’t have an indicator, just check the port so that the five pins above and four pins below (or vice versa) match the holes in the mouse and attach the mouse accordingly.
Attaching the modem
The other COM port with the 25 pins is usually for an external modem. You attach the modem in a similar manner as you would the mouse. You just have to ensure that the 16 pins above and 9 pins below (or vice versa) match the holes in the modem.
Attaching the printer to the parallel port
The printer port or the parallel port as it’s usually called, is the one with 25 holes. You use it for connecting the printer cable (or Zip drive or scanner cable).
Connecting speakers, microphone and joystick
The ports at the bottom are for attaching the speaker connectors and microphone. These wire to the soundcard.
Normally, the soundcard has three small round ports (apart from a game port) to perform specific sound functions. The ports are usually marked as Line Out – To grab sound from the sound card, Line In – For external sound capture from an outside source, and Speakers Out - To connect speakers to the sound card for audio output
Most soundcards these days also have colour-coded ports so you cannot mistake them. Besides, the function of the port is written right next to it.
The game port, which is usually part of the soundcard, could be used to connect gaming peripherals like a ‘Joystick’.
Connecting monitor cable to display adaptor
The isolated port that looks like a narrower version of the parallel port and has three rows of pins, is where you connect the monitor’s cable. An indicator on the monitor cable should say which side is up, so you shouldn’t have any problems with this one either as the plug will only go in one way. This port is situated on the VGA card of the computer.
Like we said earlier, if you look closer, you’ll realise that your computer is more user friendly than you think. The apparent maze of wires on the back panel leads to a simple solution at the end of the hunt
You’ve probably faced problems when shifting your comp or getting a new peripheral as to which cable goes where and what the empty ports might be for. If you look closer you’ll realise that it’s not as complicated as it seems. The back panel has been built in such a way that each port/ socket is built to accommodate only one connection/ wire … the one that it’s meant to!
A word of advice: Remember not to force any connectors into any of the given ports – they are designed to only go in one way. And if they do not fit easily, you are surely putting the wrong connector in the given slot or vice versa.
So what goes where?
The PS/2 ports for keyboard and mouse
If you look towards the top of the back panel, there are normally two PS/2 ports—one for the keyboard and one for the mouse. The two ports are colour coded, so you cannot mistake one for the other (blue for keyboard and green for the mouse). As a rule of thumb, the PS/2 keyboard port is the lower port while the PS/2 mouse port is above it.
Attaching the non-PS/2 Keyboard
If you don’t have a PS/2 mouse or keyboard, you won’t have any problem recognising the non-PS/2 port for the keyboard. The keyboard fits in properly into the round port provided for it. This port is located near the top of the back panel right below the power connector.
Attaching the mouse
The non-PS/2 mouse fits into what is known as the COM port. You can recognize the COM port by the fact that it has pins in it, so your mouse fits into it properly. You will normally have a 9-pin COM port and a 25-pin COM port. The mouse fits into the 9-pin port. Normally, the port will have an indicator, which will tell you which side to keep up when putting in the mouse cable. In case it doesn’t have an indicator, just check the port so that the five pins above and four pins below (or vice versa) match the holes in the mouse and attach the mouse accordingly.
Attaching the modem
The other COM port with the 25 pins is usually for an external modem. You attach the modem in a similar manner as you would the mouse. You just have to ensure that the 16 pins above and 9 pins below (or vice versa) match the holes in the modem.
Attaching the printer to the parallel port
The printer port or the parallel port as it’s usually called, is the one with 25 holes. You use it for connecting the printer cable (or Zip drive or scanner cable).
Connecting speakers, microphone and joystick
The ports at the bottom are for attaching the speaker connectors and microphone. These wire to the soundcard.
Normally, the soundcard has three small round ports (apart from a game port) to perform specific sound functions. The ports are usually marked as Line Out – To grab sound from the sound card, Line In – For external sound capture from an outside source, and Speakers Out - To connect speakers to the sound card for audio output
Most soundcards these days also have colour-coded ports so you cannot mistake them. Besides, the function of the port is written right next to it.
The game port, which is usually part of the soundcard, could be used to connect gaming peripherals like a ‘Joystick’.
Connecting monitor cable to display adaptor
The isolated port that looks like a narrower version of the parallel port and has three rows of pins, is where you connect the monitor’s cable. An indicator on the monitor cable should say which side is up, so you shouldn’t have any problems with this one either as the plug will only go in one way. This port is situated on the VGA card of the computer.
Like we said earlier, if you look closer, you’ll realise that your computer is more user friendly than you think. The apparent maze of wires on the back panel leads to a simple solution at the end of the hunt
THIN CLIENTS AN OVERVIEW
THIS IS ABOUT THIN CLIENTS :
PERFORMANCE
INSTALLATION
CONFIGURATION
WORTHINESS
Thin Clients are just like normal pc’s but the big difference is the Size & Cost. Thin Clients are cheaper than desktop pc .They are smaller in size than a normal system unit .They are square like boxes mount behind the LCD.
FEATURES: Compact size,No CPU,No Memory,No cooling needs(no Fan inside).
Contains a ethernet connector, keyboard port, mouse port, audio port & USB ports(Optional not in every version),Display adapter and power input with on of off switch.
Seems cool and sound good that buy one high end pc (intel core 2 duo @ 3.4 ghz or higher, ddr ram upto 4gb,high speed ethernet card etc.)
Supported Operating Systems are Win-xp SP3 , win server-2003 , win server small buisness and linux.Installation is preity easy with the cd .
Win-xp SP3 Supports 10 Users accoording to the company specifications and all users must be members of remote desktop users .connectivity is through terminal server services.hence multi user support is necessary. Win Server-2003 supports upto 30 users but main difference is the security/roles /policies to restrict users from unauthenticated services.
PERFORMANCE: I am using enjay thin clients UTS(Ultra Thin Series)without any USB ports.I am not criticized the product but sorry to say , these are not upto the mark every day a new issue arises like connectivity/display/hang up and console is not accept the modifications done by Admin and you are unable to access the Client directly to change any settings.
Update and tech support is very poor devices are made in china so web site is also hosted by chinese kimsen.com .you required to install native support for chinese simplified otherwise you are unable to register online and update your console software. It is not updated since 2008.
Configuration: is easy run console cd and installed the client software it asks you at the end that if you want to Add new users click yes and simply create the users by following on screen instructions.
Uses static ip addresses so no need of dhcp .devices missing the redundency so check your power supplies and back up a little fluctuation can damage the client.
WORTHINESS: AVG. according to me its better to use separate units that run on their own resources and give you less trouble. Cost cutting is not always paying.
Tuesday, January 18, 2011
Are you Aware of Your UPS & PC Compatibility?
Most unknown people bought a UPS as suggest by some one or dealer/retailer.However its a matter of concern for your pocket becoz if your UPS is not completing your PC's Requirement . You are in Trouble.
I will Tell You Briefly , How to measure the capacity of UPS & PC .
this tech note helps explain the differences between Watts and VA and explains how the terms are correctly and incorrectly used in specifying power protection equipment. Many people are confused about the distinction between the Watt and Volt-Amp (VA) measures for UPS load sizing. Many manufacturers of UPS and load equipment add to this confusion by failing to distinguish between these measures. If you have arrived at this site in an attempt to be a more informed buyer of UPS or other power equipment, congratulations. Please feel free to email me at gurbinder.sharma@gmail.com so that I may assist you in selecting the correct equipment. Power Solutions is an independent supplier of power quality products offering the best in class solutions.
Background : The power drawn by computing equipment is expressed in Watts or Volt-Amps (VA). The power in Watts is the real power drawn by the equipment. Volt-Amps are called the "apparent power" and are the product of the voltage applied to the equipment times the current drawn by the equipment. Both Watt and VA ratings have a use and purpose. The Watt rating determines the actual power purchased from the utility company and the heat loading generated by the equipment. The VA rating is used for sizing wiring and circuit breakers. The VA and Watt ratings for some types of electrical loads, like incandescent light bulbs, are identical. However, for computer equipment the Watt and VA ratings can differ significantly, with the VA rating always being equal to or larger than the Watt rating. The ratio of the Watt to VA rating is called the "Power Factor" and is expressed either as a number (i.e. 0.7) or a percentage (i.e. 70%). We can assist you with proper UPS sizing if you provide us with either, total equipment VA, total equipment Watts, or a list of the equipment part numbers that you would like to back up. The Watt rating for a computer may not be equal to the VA rating . All Information Technology equipment including computers uses an electronic switching power supply. There are two basic types of computer switching power supplies, which are called 1) Power Factor Corrected supplies or 2) Capacitor Input supplies. It is not possible to tell which kind of power supply is used by inspection of the equipment, and this information is not commonly provided in equipment specifications. Power Factor Corrected or PFC supplies were introduced in the mid 1990's and have the characteristic that the Watt and VA ratings are equal (power factor of 0.99 to 1.0). Capacitor Input supplies have the characteristic that the Watt rating is in the range of .55 to .75 times the VA rating (power factor of 0.55 to 0.75).
All large computing equipment such as routers, switches, drive arrays, and servers made after about 1996 uses the Power Factor Corrected supply and consequently for this type of equipment the power factor is 1. Personal computers, small hubs, and personal computer accessories typically have Capacitor Input supplies and consequently for this type of equipment the power factor is less than one, and is ordinarily in the range of 0.65. Larger computer equipment made prior to 1996 also typically used this type of power supply and exhibited a power factor less than one.
The power rating of the UPS
UPS have both maximum Watt ratings and maximum VA ratings. Neither the Watt nor the VA rating of a UPS may be exceeded. It is a de-facto standard in the industry that the Watt rating is approximately 60% of the VA rating for small UPS systems, this being the typical power factor of common personal computer loads. In some cases, UPS manufacturers only publish the VA rating of the UPS. For small UPS designed for computer loads, which have only a VA rating, it is appropriate to assume that the Watt rating of the UPS is 60% of the published VA rating. For larger UPS systems, it is becoming common to focus on the Watt rating of the UPS, and to have equal Watt and VA ratings for the UPS, because the Watt and VA ratings of the typical loads are equal.
Examples where a sizing problem can occur
Consider this case: A typical 1000VA UPS. The user wants to power a 900W heater with the UPS. The heater has a Watt rating of 900W and a VA rating of 900VA with a power factor of 1. Although the VA rating of the load is 900VA, which is within the VA rating of the UPS, the UPS will probably not power this load. That is because the 900W rating of the load exceeds the Watt rating of the UPS, which is most likely 60% of 1000VA or around 600W.
How to avoid sizing errors :Equipment nameplate ratings are often in VA, which makes it difficult to know the Watt ratings. If using equipment nameplate ratings for sizing, a user might configure a system, which appears to be correctly sized based on VA ratings but actually exceeds the UPS Watt rating. By sizing the VA rating of a load to be no greater than 60% of the VA rating of the UPS, it is impossible to exceed the Watt rating of the UPS. Therefore, unless you have high certainty of the Watt ratings of the loads, the safest approach is to keep the sum of the load nameplate ratings below 60% of the UPS VA rating. Note that this conservative sizing approach will typically give rise to an oversized UPS and a larger run time than expected. If optimization of the system and an accurate run time are required, mail me on abobe mentioned mail Address. I Might have the ability to accurately size your UPS.
Conclusion : Power consumption information on computer loads is often not specified in a way that allows simple sizing of a UPS. It is possible to configure systems that appear to be correctly sized but actually overload the UPS. By slightly over sizing the UPS compared with the nameplate ratings of the equipment, proper operation of the system is ensured. Over sizing also provides the side benefit of providing additional UPS backup time. However, to truly ensure that your UPS is sized properly and that you do not waste money and space on an over-sized unit. So Mail me if you want any guidence for free.
Regards
Gurbinder
I will Tell You Briefly , How to measure the capacity of UPS & PC .
this tech note helps explain the differences between Watts and VA and explains how the terms are correctly and incorrectly used in specifying power protection equipment. Many people are confused about the distinction between the Watt and Volt-Amp (VA) measures for UPS load sizing. Many manufacturers of UPS and load equipment add to this confusion by failing to distinguish between these measures. If you have arrived at this site in an attempt to be a more informed buyer of UPS or other power equipment, congratulations. Please feel free to email me at gurbinder.sharma@gmail.com so that I may assist you in selecting the correct equipment. Power Solutions is an independent supplier of power quality products offering the best in class solutions.
Background : The power drawn by computing equipment is expressed in Watts or Volt-Amps (VA). The power in Watts is the real power drawn by the equipment. Volt-Amps are called the "apparent power" and are the product of the voltage applied to the equipment times the current drawn by the equipment. Both Watt and VA ratings have a use and purpose. The Watt rating determines the actual power purchased from the utility company and the heat loading generated by the equipment. The VA rating is used for sizing wiring and circuit breakers. The VA and Watt ratings for some types of electrical loads, like incandescent light bulbs, are identical. However, for computer equipment the Watt and VA ratings can differ significantly, with the VA rating always being equal to or larger than the Watt rating. The ratio of the Watt to VA rating is called the "Power Factor" and is expressed either as a number (i.e. 0.7) or a percentage (i.e. 70%). We can assist you with proper UPS sizing if you provide us with either, total equipment VA, total equipment Watts, or a list of the equipment part numbers that you would like to back up. The Watt rating for a computer may not be equal to the VA rating . All Information Technology equipment including computers uses an electronic switching power supply. There are two basic types of computer switching power supplies, which are called 1) Power Factor Corrected supplies or 2) Capacitor Input supplies. It is not possible to tell which kind of power supply is used by inspection of the equipment, and this information is not commonly provided in equipment specifications. Power Factor Corrected or PFC supplies were introduced in the mid 1990's and have the characteristic that the Watt and VA ratings are equal (power factor of 0.99 to 1.0). Capacitor Input supplies have the characteristic that the Watt rating is in the range of .55 to .75 times the VA rating (power factor of 0.55 to 0.75).
All large computing equipment such as routers, switches, drive arrays, and servers made after about 1996 uses the Power Factor Corrected supply and consequently for this type of equipment the power factor is 1. Personal computers, small hubs, and personal computer accessories typically have Capacitor Input supplies and consequently for this type of equipment the power factor is less than one, and is ordinarily in the range of 0.65. Larger computer equipment made prior to 1996 also typically used this type of power supply and exhibited a power factor less than one.
The power rating of the UPS
UPS have both maximum Watt ratings and maximum VA ratings. Neither the Watt nor the VA rating of a UPS may be exceeded. It is a de-facto standard in the industry that the Watt rating is approximately 60% of the VA rating for small UPS systems, this being the typical power factor of common personal computer loads. In some cases, UPS manufacturers only publish the VA rating of the UPS. For small UPS designed for computer loads, which have only a VA rating, it is appropriate to assume that the Watt rating of the UPS is 60% of the published VA rating. For larger UPS systems, it is becoming common to focus on the Watt rating of the UPS, and to have equal Watt and VA ratings for the UPS, because the Watt and VA ratings of the typical loads are equal.
Examples where a sizing problem can occur
Consider this case: A typical 1000VA UPS. The user wants to power a 900W heater with the UPS. The heater has a Watt rating of 900W and a VA rating of 900VA with a power factor of 1. Although the VA rating of the load is 900VA, which is within the VA rating of the UPS, the UPS will probably not power this load. That is because the 900W rating of the load exceeds the Watt rating of the UPS, which is most likely 60% of 1000VA or around 600W.
How to avoid sizing errors :Equipment nameplate ratings are often in VA, which makes it difficult to know the Watt ratings. If using equipment nameplate ratings for sizing, a user might configure a system, which appears to be correctly sized based on VA ratings but actually exceeds the UPS Watt rating. By sizing the VA rating of a load to be no greater than 60% of the VA rating of the UPS, it is impossible to exceed the Watt rating of the UPS. Therefore, unless you have high certainty of the Watt ratings of the loads, the safest approach is to keep the sum of the load nameplate ratings below 60% of the UPS VA rating. Note that this conservative sizing approach will typically give rise to an oversized UPS and a larger run time than expected. If optimization of the system and an accurate run time are required, mail me on abobe mentioned mail Address. I Might have the ability to accurately size your UPS.
Conclusion : Power consumption information on computer loads is often not specified in a way that allows simple sizing of a UPS. It is possible to configure systems that appear to be correctly sized but actually overload the UPS. By slightly over sizing the UPS compared with the nameplate ratings of the equipment, proper operation of the system is ensured. Over sizing also provides the side benefit of providing additional UPS backup time. However, to truly ensure that your UPS is sized properly and that you do not waste money and space on an over-sized unit. So Mail me if you want any guidence for free.
Regards
Gurbinder
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