Power is required for all our servers, desktops, and other electronic devices to operate.

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Dell 2950 - extra AMP connector to power up HDDs

I am running 5 external HDDs in an enclosure that takes SATA cables + 2 AMP connectors. As I am not using any extra peripherals, I am sure that there is more than enough power in the 2950 to deliver ...
2
votes
3answers
55 views

What functionality does smartd lose when disabling state saving or attribute logging?

I'm trying to let my backup server have its disks in standby as often as possible. Outside of smartd or actual backup usage, the disks currently spin up once per day (various cron tasks). smartd, by ...
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1answer
65 views

configure power restore policy HP ProLiant BL2x220c G6 [closed]

After each reboot my server automatically powers on: Power Overload : false Power Interlock : inactive Main Power Fault : false Power Control Fault : false **Power Restore Policy : ...
4
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1answer
122 views

Heat generated by a HP ProLiant DL380p Gen8 entry EU servers

I have to buy a stand alone server rack to be placed in a machine room. The temperature can reach 30°C in the room (I have no choice with regards to the location). In order to correct for this I will ...
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1answer
33 views

Guest VMs Unknown after power outage on HP VSA

A remote office had a power outage tonight. When the power came up, both the Physical DC and the Physical ESXi Server came up. Connecting to vSphere, I can see the HP-VSA has started, but the other ...
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3answers
438 views

Floppy power to PCI-E card in DL380 G5

I have an HP DL380 G5 server and a PCI-E card that I need to use in the server. The problem: the PCI-E card requires additional power from a 4-pin floppy connector, and the HP DL380 G5's PSU has no ...
2
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1answer
33 views

After UPS battery replacement (HP R/T 3000)

has any one had experience with this UPS? i have replaced the batteries but have't ran self test yet, if i run self test is there a risk of powering down the machines the UPS powers? just wondering ...
5
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2answers
390 views

Which STONITH hardware for power fencing?

I'd like to setup a two node high availability cluster using corosync/pacemaker/drbd. For that, of course, I need fencing. As far as I understand, all IPMI/iLO/... solutions do the job, but only as ...
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2answers
46 views

my dell power edge 2900 power off after 1- 1.5 hours automatically

my dell power edge 2900 power off after 1- 1.5 hours automatically. the fault of fan speed on the front panel is viewed, but that should not stop the server. i swapped with redundant power supply ...
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0answers
29 views

Upgrading memory on an IBM Power 710 Express (8231-E1C)

I have problem with Power 710 Express server 8231-E1C. Server was loaded with 4x8GB (2xEM16) memory on a single riser card. I have replaced with 4x16GB (2xEM32). The firmware is AL740_126. At Hardware ...
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2answers
130 views

LogMeIn mess my wake-on-link?

I have windows 8.1 64 bit with an on-board network card (LAN: Intel® Gigabit Ethernet Controller driver for Windows 8.1*) Now - please notice : I have created an Acronis IMG right after installing ...
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3answers
530 views

Power Cables Required to Switch from 120v to 240v for Dell Poweredge Servers

We have a cabinet of servers and other hardware (switches, firewalls, etc) that all are currently running on 120v. I've confirmed that the power supply for all of our devices support both 120v and ...
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4answers
545 views

Is there any value in protecting both rack power feeds with their own UPS?

I've done some looking and have not found a satisfactory answer to this question. When is it necessary or suggested to use an independent UPS (on it's own mains branch circuit) for each power feed to ...
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0answers
17 views

Why are wattage/amp numbers not fitting together?

I'm trying to figure out my backup power needs, and I'm having quite a difficult time with the numbers. Pretty much every piece of equipment seems to have wildly varying numbers that don't fit ...
4
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1answer
1k views

Proliant DL380 G7 won't boot, solid amber power LED

I have a problem with an HP Proliant DL380 G7 that leaves me without much in the way of troubleshooting approaches. This server will not boot. It was stored in a datacenter, and I went to retrieve it ...
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1answer
51 views

Commodity hardware related, i'm searching for a ILO, BMC, ALOM and in general IPMI alternate solution [closed]

I'm searching for a composite solution to have the same features of an IPMI controller on commodity hardware independently from arch/model and without excessive device dependencies. Essentially the ...
2
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0answers
505 views

\FileSystem\srvnet preventing computer sleep

I have what appears to be a pretty common issue. Basically, most of the computers on my company network won't go to sleep. After a lot of testing (disabling shared services, multimedia stream, etc...) ...
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2answers
355 views

Best practice on Linux servers and CPU/power throttling?

I am running a couple of Debian 6 (2.6.32) and 7 (3.2) Linux servers and all of them have energy saving settings enabled in their BIOS. Furthermore Linux shows that the CPUs are throttled if the ...
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7answers
7k views

Why do we still use power supplies on datacenter servers?

Computers mainly need three voltages to work : +12V, +5V and +3,3V, all of them are DC. Why can't we just have a few (for redundancy) big power supply providing these three voltages to the entire ...
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0answers
26 views

APC Power Controllers Inaccessible After Brief Power Loss

It seems like every time there is a brief power outage in our environment (1-2 second blip). There are generally a handful of APC power controllers that become inaccessible through network. The ...
11
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1answer
408 views

Daisy Chaining UPS Power Cable

I have a rackmount UPS. The UPS has a 6ft long 12AWG thick power cable that powers it from one of the server room's 20A wall plugs. The current orientation of the cabinets is not ideal. All but this ...
5
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1answer
104 views

Using more than 80% power on a circuit in a disaster scenario

We currently have two cabinets of equipment at our datacenter, and each cabinet is served by two 30A circuits. The facility is relatively new, and each circuit is (supposedly) redundant at the source. ...
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1answer
131 views

desperately need 110v from a 208v pdu [closed]

I'm in a bit of a pickle... We're moving a client's infrastructure to a colocation facility. We have redundant 208v/30amp PDUs. While installing today, we realized that the client had a small ...
3
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2answers
222 views

UPS unable to power the 1U server

1U rack server: http://ark.intel.com/products/67786/Intel-Server-System-R1304GL4DS9 Power backup: http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=BR1000G-IN When I try ...
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1answer
474 views

iSCSI Datastores not found after Power Failure

I have an ESXi 5 host running 3 virtual servers. 1 of these servers uses a datastore via Software iSCSI on a separate piece of hardware. When the two hardware servers (storage and host) experience ...
5
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2answers
119 views

UPS for 30A service to server racks

Our server rack has two 208V 30A dedicated circuits running to it, each to a PDU mounted in the rack. Most of the equipment has redundant power supplies so one goes to each PDU. I'm not sure who had ...
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1answer
372 views

NVIDIA Tesla K20C in Dell PowerEdge R720xd — power cables

I am trying to put an NVIDIA Tesla K20C into a Dell PowerEdge R720xd. I'm having a bit of trouble understanding the power requirements of the card. First, here is a picture of two pages of the ...
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4answers
440 views

Maxing out both PDUs in a rack with redundant power

If I have a rack full of servers using redundant power supplies, and I'm keeping the amps at 80% (16A of 20A), isn't this still asking for trouble in the event of a power loss on one of the circuits? ...
2
votes
2answers
86 views

Two APC Symmetra LX 16kVA into one common output?

We have 2x APC symmetra LX 16kVA units running at the moment and have read (in Eaton's documentation) that their UPSs can have a common synchronised output (based on input phase or set phase with a ...
0
votes
1answer
256 views

PowerEdge 2850 RAID 0 Configuration - Drive not found

I have two 73GB 15,000RPM HDD in my PE2850 that I need to stripe as one logical drive so I can install MS SBS 2011 (which requires an 80GB volume minimum). I enabled RAID in the BIOS and paired the ...
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0answers
228 views

Error in AIX : 0516-040 : Unable to read the specified physical volume

Please provide me your valuable suggestions on the error beow in AIX. When I'm running the following command on the AIX server lsvg -l rootvg I'm getting this error: 0516-040 : Unable to read the ...
2
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3answers
99 views

How should mains power be conditioned for devices not protected by a UPS?

UPSes protect devices from more that just power outages. I've got a Schneider SURTA2200XL UPSes (manual here). It protects against all of the following: undervoltage (aka brownouts) overvoltage ...
5
votes
1answer
80 views

Power Control Compartment?

I recently purchased an IBM enclosed, rolling rack that had a 6 drive server, huge battery backup, and this strange item called a "Power Control Compartment" I cannot find any good documentation ...
0
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1answer
88 views

Can my cisco C220 run on 220v instead of 110v and if so, how do i change it?

We have both 220v and 110v power at our data center, but have more capacity left on the 220v circuit so i would like to put our new c220 server on it. What does it take to make this happen?
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1answer
85 views

power monitoring capabilities of ibm x3550 m4

I don't understand how monitoring of power consumption of x series servers is done with IBM AEM - I'm specifically interested in x3550 m4. The documentation on the servers does not really highlight ...
3
votes
2answers
110 views

Does the exact same load use the same amount of power on different processors?

Let's say that we have a set workload doing a set amount of work. If I have two identical servers, one equipped with a E5-2660 and one with a E5-2670 and otherwise identical hardware, will the total ...
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2answers
233 views

Server 2008 R2 - Allow UPS to wake computer?

I have a single Windows Server 2008 R2 box that's on a generic Geek Squad battery backup. (That purchase was not my choice.) It shuts down fine when the battery hits a critical level, but I can't seem ...
5
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2answers
69 views

What to look for when purchasing a power generator?

After an extended power failure that caused our UPS to run down and have issues coming back up once power was restored, I'm looking into getting a generator. What do I need to look at when specing a ...
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1answer
252 views

Does a Dell PowerEdge 1850 have a way to get Molex 4 pin power?

I have a PCI card that needs 4 pin power hooked up to it and wondering if there is a way to supply it inside this server.
1
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1answer
176 views

HP DL380G5 with APC SC1500 UPS — transfer time failure

I have 2 of these things: APC SmartUPS SC1500 (220v). My Proliant G5 DL380 PSUs seem to really hate them. This is what happens when UPS switches to battery (PSU2 is plugged into the SC1500): iLo IML ...
4
votes
2answers
412 views

Understanding redundant power supplies

Im looking into the cost of putting a Cassandra cluster into a colo facility. Along these lines there would be 6-8 servers at the outset with expected growth over time. One option is just a series of ...
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1answer
433 views

Backup Power System for a Small Office: UPS, ATS, Generator etc

I'm trying to put together a backup power system for our office and I need some guidance. We frequently lose power for several hours at a time. I'm looking for a solution which would: Control ...
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3answers
315 views

How can i measure the power consumption of a PoE switch?

I have to measure the power consumption behavior of switches which are powered with PoE and which also provide energy to other devices. How can this be done? regards
2
votes
1answer
338 views

Powershell Hyper-V Remote?

Im basically wondering if this is possible, Essentially I have a Powershell 3.0 Script that creates a Hyper-V Server/VHD etc.. it works well but it's obviously defaulting to my local machine. What Im ...
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1answer
43 views

hardware to monitor if power is available [closed]

Our server-cage is working on 3-phase power. I had this week this unpleasant surprise that one of 3 fuses went off. Can somebody advise me on some (simple) schematics that would allowed me to check ...
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2answers
101 views

Redundant Power System integration

We currently have a stack of catalyst 3750's at the core of our network. We just purchased two new 3750's to split off our VMs and SAN onto their own switches and away from the stack. These two new ...
2
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1answer
2k views

HP ProLiant ML350 G6 powerup issue

My setup: HP ProLiant ML350 G6 (2x PSU/redundant) I present my issue in a few steps: Power cables disconnected (no power coming to server) Re-connect cables Press "Power button" -> I can see green ...
4
votes
2answers
132 views

Does the additional load on UPS in case of grid failure amount to 100%?

The scenario is as follows: Servers are equipped with two PSU's each. One of these is connected to the UPS, the other one directly to the power grid (bypassing the UPS). I would assume that since the ...
6
votes
2answers
12k views

ipmitool - can't find /dev/ipmi0 or /dev/ipmidev/0

Based on a previous question, I installed ipmitool (yum install ipmitool). Even after a reboot, though, i get the following error when trying to run ipmitool power status: Could not open device at ...
2
votes
1answer
353 views

Small Office server rack - power requirements

We're building an office for a small business, and the electrician is starting rough-in next week. I'm doing all of the low voltage wiring myself. We have electrician for 120V wiring.I have a ...