Questions tagged [datacenter]

is a facility used to house computer systems and associated components, such as telecommunications and storage systems

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I live in Australia, how is it that Stack Exchange is so fast without using any CDN?

I had a look at the Stack Exchange Servers: https://meta.stackexchange.com/questions/10369/which-tools-and-technologies-are-used-to-build-the-stack-exchange-network Seems they only have two data ...
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What would happen to our data if our GCP Datacenter goes down?

Following the recent events in France at OVHCloud's Strasbourg Datacenter, we can't help but wonder what would happen to our whole stack in the cloud if the DC we are currently hosted on at GCP meets ...
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OVH Public Cloud - Adding region to exisiting vRack

I have an OVH public cloud project with several instances connected between two datacenters in vRack with the classic 192.168.0.0/24 range on the eth1 network interface. The vRack was initially ...
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Cloud regions apparently fail now and then. How resilient should one expect a cloud region to be against fire or natural disasters?

Today the SBG2 availability zone in the SBG region burned down. All other AZ's (SBG1,2 AND 4) was shut down due to this, and will remain shut down until at least monday. All SBG zones are apparently ...
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Windows Server 2019 DataCenter: adding disks to the Storage Pool (with mirror accelerated parity) doesn't increase storage space?

(old title: Storage Spaces on stand-alone Windows Server 2019 Datacenter: what are my options with 2x SSD and 4x HDD?) I have 2x 1.75TB SSD + 4x 3.64TB HDD. I thought to use Storage Tier but I am ...
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Is there any way to understand what type of server downtime I am facing?

I have a remote server with no physical attendance 24x7. But sometimes I have faced a downtime due to either network related issues or power outages. But because I am sitting afar from my server I am ...
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AWS VPC and VPN connection to Multiple Cloud or Datacenters with Datacenters having overlapping IP address ranges

Problem Statement I have a requirement for Business continuity plan using AWS Cloud VPC with following requirements - In our developer's AWS VPC private Subnet, we will have Workspaces (ie AWS secure ...
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How does a datacenter protect itself from IP change by the hosted servers?

This question is inspired by the VPS that I rent from OVH. The OS installation was automatic, and the IP already configured. However, as I have root access, I could change the IP to another, possibly ...
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Windows Datacenter Server Licensing

my boss purchased a Windows 2019 Data center license. The issue is that a colleague installed it incorrectly, where he installed 2016 Standard on the Host and then tried to use license for the VM's. ...
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Datacentre MIgration: can we have same IPs

I am moving my datacentre from the USA to Singapore with a new vendor. Can I have the same IP address which I was using earlier because most of my applications are using IP to connect to my database ...
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Step up voltage converter in datacenter?

I am setting up a rack in the data center that only has 110V. It is redundant, so I thought I could take one from each leg and get 110V, but when I used a voltmeter last night they somehow are on the ...
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Is the temperature differential in my server room to large under heavy load

I have two temperature readings for my server room one measures the ambient temperature the other measures the exhaust for a server cluster. I have noticed recently that the difference between these ...
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Replay DHCPDECLINE to host by edit ethernet address in dhcpd

I known in dhcpd.conf, I can use following config to assigned a fixed ipv4 address to a client. host h1{ hardware ethernet 11:22:33:44:55:66; fixed-address 192.0.2.2; } range 192.0.2....
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Subnet and VLAN addressing in a Datacenter

I am trying to learn Datacenter networking and I am finding it hard to understand best practices for IP Address and VLAN assignment to servers and racks. For my question, I'll assume a typical 3 ...
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Anyway to turn off the health LED on a DL360 g9?

We have an out of warranty test machine (HP DL360 G9) that we are keeping around, but don't want to repair. The health LED is on and that leads the good datacenter folks to come in and freak out on ...
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Datacenter to Azure Migration - Am I On the Right Path?

Some quick background. We are a small company (13 employees, 6 of which or IT/developers). Everyone works remotely and there is no central office. Our datacenter is only used for development and ...
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Does the power consumed by an air conditioner adds to the total heat generation in a server room?

I have to size up the air conditioning in my server room. I have calculated a total load of all the power consuming equipment in my server room, i.e. servers, networking devices, SAN, lighting, UPS, ...
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How to collect historical data using smartctl?

I'm trying to do some analysis on the SMART stats of disk drives. Unfortunately, I'm not collecting/storing smart stats data daily for the analysis. I will be writing some procedure to collect it from ...
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dedicated tunnel between two data center?

I sometimes hear the word about dedicated tunnel between two data centers. Say there is dedicated tunnel b/w DC1 and DC2 . DC1-> DC1 ISP -------- Internet ------ >DC2 ISP --------> DC2 My ...
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New virtual data centre design considerations

The situation is like this. The customer has 2 physical servers running 1 ESXi each, running virtual DHCP and DNS windows server on both ESXi as redundancy,he wants to add a 3rd server, and have vCSA ...
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Running HA Consul in two datacenters

One of my clients would like to run consul in two datacenters. Both datacenters Berlin and Frankfurt should result in a High Availability setup, where one datacenter can be taken offline or die ...
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Connecting to ATEN KVM-over-IP from a modern environment

We have several KN4132v and KN2140v appliances connected to multiple servers in our lab. These are multi-thousand dollar devices that I would be hard-pressed to justify throwing away. Unfortunately, ...
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How do you do a System State Restore on a Windows 2016 server located in a datacenter where you only have RDP and serial console access?

I am attempting to do a system state restore on a Windows Server 2016 box, however the server is in a data center (1&1) and I only have RDP and serial console access to it. I have the ...
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What are the pros and cons of having your own UPS attached to your own server hosted in a data center?

According to this comment by Tom O'Connor (slightly edited below): You can seriously cheese off a datacentre by putting an UPS inside your own rack. What are the risks to the data center should a ...
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Where to get multiple Public IP addresses from? [closed]

I have a broadband connection that has one single Public IP address, Now I want to set up a home datacenter with OpenStack, My problem is that whenever I launch a new VPS in my master server, each ...
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Is it possible to run 2 arrays of RAID 1 on the same server (HP XW6600)

We are running our datacenter with one array of RAID 1 (with 2 x 2TB) on a HP XW6600 (CentOS 7). We'd like to increase disk space and avoid as much as possible downtime while upgrading. There are ...
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Does data center hosting servers have firewall in their routers?

When I setup some application in my home environment, to access that application from outside over internet I need to open ports in my router. So if I host an application in a rented Data center, does ...
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567 views

UPS inside server room?

In my company we are considering to move our servers (some are mounted on 25U rack and some are tower servers) to a newly created room (underground, no windows) that contains 40 KVa UPS and redundant ...
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Can Azure data centers be considered complaint with Uptime Institute's Tier 3 Classification requirements?

Uptime Institute certifies data center designs, facilities, and operations to the Tier Classification System (I-IV) and Operational Sustainability criteria. Can Azure data centers be considered ...
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RHEL7: virt-who reports all machines as localhost.localdomain on Customer Portal

I have an ESXi 6.0 hypervisor and am in the process of installing datacenter licenses for RedHat. I installed and configured virt-who RHEL7 VM as per How to use "virt-who" to register Esxi hosts with "...
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Rack Power Draw Reliability

I am responsible for several racks worth of gear, and as part of a datacenter efficiency project, I need to move some gear around. One constraint I'm running into juggling these servers around is ...
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Assuring two instances of the same frame wont get on to the Internet

I am new to networking and I'm trying to learn some data center architecture, but theres one thing i don't understand. If you have a redundant switch and router setup, with active active. Like this: ...
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Co-location: How to be sure the DC does not replace my server [closed]

I'm planning to purchase an expensive server and send it to a datacenter to co-locate. As this is my first server, there is a question in my mind and would be appreciated if you answer it. How could I ...
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242 views

How is air-flow designed in closed racks?

I have seen (older) racks which are fully-closed. For example similar with plexiglass doors: Or with metal doors without any grid/holes. Are such racks designed for data-centers with raised floors ...
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Can you run an sdn across datacenters?

This is entirely for R&D purposes, not actual production use, for now. But can you run an sdn, say an overlay network for example, across datacenters? I.E. would I be able to run flannel on a ...
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colocation of a server

Hi I currently host my site we a hosting provider and that is going well, however they have just been sold and I want to use a server (either Poweredge 6850 or Poweredge 2950) which will be put inside ...
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1answer
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How to connect to a BGP network? [closed]

A service provider we're working with delivers us data via two(for resiliency) 1Gbps cross connects. He's located in a datacenter nearby the datacenter where our server is located. We don't have a ...
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Automating reboot of servers

We have 1,000 servers having different manufacturer and a mix of Solaris and Linux. They go down frequently and we end up rebooting by logging in to the Integrated Lights Out Manager (ILOM). I want ...
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Going the colocation route - Thoughts or suggestions on plan?

We currently host around 200 customers website with cpanel at a datacenter we rent dedicated servers from. We also host two sites that do around 5 to 6m unique a day, which is distributed across 3 ...
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Blade Server Networking Connectivity Solution

We are looking at purchasing 4 of the Dell M1000e Blade Chassis', along with 16x Half Height Servers in each. For our LAN Connection, we are looking at 2x MXL 10/40 GbE IO's per Chassis. From my ...
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Sharing NFS datastore between data centers

I have no long experience with vmware-vsphere 5.5 .. so i have simple question Is it possible to share NFS datastore across tow data centers? if yes ; is it good thing to do?
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Estimate power and cooling for server room

We are trying to determine the right power and cooling for a new server room which would be about 350 sq ft., our power is 220V. We are initially only planning to start with a single rack with ...
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Multiple static ip plus single lan subnet

So I will be taking my single server (one external ip address) and splitting it into 3 different servers (live, testing, nfs-share storage) at a new datacenter. I don't really know how i can set up ...
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Putting WD Datacenter drives in a NAS [closed]

I want to put a RAID10 array of 4x5TB WD Datacenter drives in a server. What happens if I don't want to use the server anymore and I want to use those drives in a NAS instead? Does it have to be a NAS ...
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Mounting equipment that only occupies half the depth of the cabinet?

I'm a bit naïve at all of this (sorry!), but I have to install a bunch of equipment in our co-location facility. We have a switch that only occupies half the "depth" of the cabinet. How do I mount ...
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Replacing failed hardware in a hyper-converged cluster node [closed]

Is it possible to replace failed physical components (such as disk, RAM, or power supply) in a hyper-converged node (such as VXrail or Nutanix) without taking the node offline?
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ElasticSearch enforce master shard allocation & Improve cross DC write speed

I currently run three Elasticsearch nodes. Each one in a different data center (EU, US, AP) as an AWS EC2 instance. There are 2 replicas per each shard for each index. Writes go only to the EU node. ...
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Detect changes of VM parameters

We run VMs in remote data centers. We are responsible for the VM, but not for the hypervisor. We want to detect changes in the resources of the VM. Example: VM has 10GByte memory - everything is ...
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Can data center remote hands service install new network card?

Long story short: I'm co-locating a standard server box in a data center in a faraway foreign country. I need to install a specialized network card that isn't sold or included by the OEM. I'd like to ...
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How to connect a Juniper EX4500 to netapp X1107A

What is the best and not expensive way to connect a Juniper EX4500 to a X1107A Chelsio PCI Netapp card? Will these do (10GBASE-SR) for both end? and then connect with fiber cable? How important is it ...

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