What UPS is good enough for my server?

By jonin ·
hi guys,

i have a dell power edge server...running sbs2003 its pretty standard
has raid hard drives etc

will this ups be adequate?

im scared to buy stuff that wont hack it

here is what i found for 150 euro

Capacity: 2000 VA / 1200 W
Operating Voltage Range: 166 - 280VAC
Output: Voltage 230VAC
Voltage Regulation (Battery Mode) ? 5 %
Frequency 50 Hz or 60 Hz
Frequency Regulation (Battery Mode) ? 1 Hz
Output Wave Form: Modified sine wave
Battery Type and Number: 12V battery (9 A) x 2
Back-up Time: (load: 1 PC load + 15" monitor) 45 minutes (around)
Recharge Time: 6 hours to 90% after complete discharge
Transfer Time: (typical) 4 to 8 ms
Indicator: AC Mode The 1st green LED lights up ; the LED 2 to 5 light up one by one indicating the load level
Back-up Mode: The 1st green LED is blinking; the LED 2 to 5 light up one by one indicating the battery capacity
Fault: Red LED is on Audible Alarm
Back-up Mode: 1 sound signal every 10 seconds
Battery Low: 1 sound signal every second
Overload: 1 sound signal every half-second
Fault: Continuous sound signal
Protection: Full Protection against discharge, overcharge and overload Environment
Operating Temperature: 0 ?C - 40 ?C
Humidity Relative: 0% ~ 90% (non condensing)
Noise Level: AC mode: < 40 dB; back-up mode: < 45 dB
Interface: Smart RS-232 Port Windows 98/NT/2000/2003/XP/Vista
USB Port: Windows 98/2000/ME/XP; Max 10.X
Dimensions: (D x W x H) / weight 405 x 145 x 205m mm / 9.8kg
Supported OS: Windows 98/NT/2000/2003/XP/Vista, Mac 10.X
Accessory: Software, user guide, cables

thanks in advance
let me know

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All Answers

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RE: What UPS is good enough for my server?

by OH Smeg Moderator In reply to What UPS is good enough f ...

Well this depends on what it is that you are aiming to prevent here. If it is just a Backup for Power Outages of short duration then it certainly has the capacity to deliver sufficient power.

However if you are planing for extended Power Failures you need some idea of the duration that the UPS can run on Battery and the Load that it will be supplying.

Try looking at some of the White Papers that APC has available here. They have lots of available White Papers on UPS's and what to look for.

some of the things you need to look at include

The different types of UPS systems

Preventing Data Corruption in the Event of an Extended Power Outage

Technical comparison of On-line vs. Line-interactive UPS designs

Protection of RS-232 Serial Connections

Understanding Power Factor, Crest Factor, and Surge Factor

Cooling Strategies for IT Wiring Closets and Small Rooms

Comparison of Static and Rotary UPS

Management Strategy for Network-Critical Physical Infrastructure

Reliability Analysis of the APC InfraStruXure Power System

Mean Time Between Failure: Explanation and Standards

Yep I know that is a lot to look at but honestly it's just a small sample of what you should understand if you are making a decision like this unaided.


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Sufficent power

by mjd420nova In reply to What UPS is good enough f ...

If using this unit for less than thirty minutes, it should serve you well. However care should be taken when the unit nears the end of its battery driven period. As the specs state, it is a modofied sine wave and in most cases this will deteriorate to a square wave rather quickly and this could cause severe damage to the server power supply.

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Online versus standby UPSs

by robo_dev In reply to Sufficent power

As long as it's a reasonably good quality UPS (e.g. APC, TrippLite) you should be fine.

Some brands (e.g. Belkin) tend to lie about their specs, so I do not trust them in general.

Some would argue that a true 'online' UPS, like some of the higher-end TrippLite units, are better because the output is a 'pure' sine-wave.

Lower-cost standby UPS units take AC power and filter it, whilst 'online' UPSs convert AC to DC at all times, then convert to AC for the protected devices.

the link below explains it better than I can:

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