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Disaster-Resistant MetroCluster Cloud

MetroCluster provides high disaster resistance, fault tolerance, and service availability. Power outages, fires, natural disasters, human errors, investigative actions in the data center, and other emergencies will no longer threaten your business.

Disaster-Resistant MetroCluster Solution

For organizations facing specific challenges in ensuring high disaster resistance, fault tolerance, and service availability, Cloud4Y offers an effective solution — MetroCluster with 99.99% SLA.

MetroCluster technology is based on duplicating storage systems between two geo-distributed sites. All data is stored in a fault-tolerant cluster split in half. Each half contains a backup copy of the data, enabling quick recovery in case of failure. MetroCluster utilizes synchronous clustering, mirroring, and replication technologies.

Solution Benefits

  • Reduced downtime during failures.
  • Virtual machine startup on the backup site takes no more than 10 minutes.
  • No data loss during failover.
  • Load balancing between two data centers.
Service
MetroCluster
Cost
from 156 € per month

Cloud constructor

  • CPU numbers, CPU
    • 1
    • 32
    • 64
    • 96
    • 128
    • 160
    • 192
    • 224
    • 256
  • Access memory, GB
    • 1
    • 64
    • 128
    • 192
    • 256
    • 320
    • 384
    • 448
    • 512
  • Hard drive space, GB
    • 20
    • 2000
    • 4000
    • 6000
    • 8000
    • 10000
    AllFlash storage SSD, redundant controllers. Guarantee SLA for this volume: 10 IOPS per 1 GB
  • Speed (channel Dedicated), Mbit
    • 10
    • 20
    • 40
    • 60
    • 80
    • 100
    • 120
    • 200
  • Count of IPs, Pcs.
    • 1
    • 10
    • 20
    • 30
    • 40
    • 50
  • Additional services

Price

/ Hour
/ Day
/ Month

Price

/ Hour
/ Day
/ Month

How It Works

Geo-distributed cluster. The data cluster is split evenly. Half of the data is in a Tier3 data center in Moscow, and the other half is 10 km away in another Tier3 data center. Both halves operate synchronously as a single structure.

All cluster components are duplicated: servers, storage, network equipment, and communication channels.

Data replication occurs simultaneously on both storage systems. One contains the original, and the other—the replica. Thus, in case of any failure in one data center (power outage, storage failure, controller/disk failure, or loss of connectivity between data centers), disaster recovery takes just minutes. Data remains available (RPO i=0, RTO ii=10 minutes),with no transactions lost.

i RPO (recovery point objective) — the maximum amount of data that can be lost without critical impact. 
ii RTO (recovery time objective) — the maximum permissible time for data restoration.

FAQ

What is this service?
MetroCluster is a disaster-resistant solution based on two data centers operating in active-active mode.
Is replication to the second data center automatic?
Yes, you configure it once, and then everything happens automatically.
How often is data replicated?
Continuously, all changes are recorded.
What’s the price difference compared to a normal cloud?
On average, twice as much.
If one data center becomes unavailable, can we simply continue working on the second one without noticing the failure?
Yes, you can continue working if active-active mode was configured.
Is data written to both data centers simultaneously?
Data is written to one data center and then replicated to the other.
How does this service enhance security?
The base SLA under the contract increases to 99.99%. This is much higher than what many cloud providers offer.

For more information visit knowledgebase, ask online consultant or send an inquiry to our tech support team using ticket system.
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