Frequently Asked Questions

Nubex Cloud offers 30+ products across 12 categories: Compute (UHost, GPU, Kubernetes), Storage (UDisk, US3, UFS, Snapshots), Networking (UVPC, ULB, EIP, UCDN), Databases (MySQL, PostgreSQL, MongoDB, Redis, TiDB, and more), Security (UWAF, Anti-DDoS, Bastion Host, SSL), and Big Data & AI (Kafka, RocketMQ, Elasticsearch, UModelVerse). Browse the full catalog at docs.nubexcloud.com/docs.

Nubex Cloud operates data centers across multiple regions including Dubai (UAE), Riyadh (KSA), and additional locations globally. Each region has multiple Availability Zones (AZs) for high-availability deployments. Deploying across multiple AZs protects your workload against single-datacenter failures. Enterprise customers can request dedicated or additional regional coverage — contact our sales team for details.

Go to console.nubexcloud.com and sign in with your registered email and password. The dashboard shows all active resources, recent activity, and billing information. You can also manage resources programmatically via the API — documentation is at docs.nubexcloud.com/docs/api. We recommend enabling two-factor authentication (2FA) under Account Settings.

Nubex provides SLA guarantees across all core products: Elastic Compute (UHost) 99.95%, Elastic IP (EIP) 99.95%, Cloud Database (UDB) 99.95%, Object Storage (US3) 99.9% availability with 12-nines data durability, and CDN (UCDN) 99.9%. For enterprise clients, 99.99% SLA is available with a dedicated support agreement. Full SLA terms are at docs.nubexcloud.com/docs/sla.

Yes. Nubex Cloud provides Resource Access Management (IAM) through the UProject system. Create sub-accounts for team members and assign granular permissions — for example, letting a developer manage compute instances but not billing, or giving a DBA access only to database resources. IAM policies can be scoped by product category, operation type (read/write), and resource tags. See docs.nubexcloud.com/docs/uproject.

In the console, go to Compute → Elastic Compute → Create Instance. Select your region, Availability Zone, machine type, CPU/memory configuration, OS image, storage type, and network settings, then click Buy Now to provision. For best practices — including network pre-configuration and firewall settings — see the Quick Start guide.

UHost offers multiple series: General Purpose (balanced CPU/memory for web apps and APIs), CPU Optimized (high vCPU ratio for compute-intensive workloads), Memory Optimized (high memory for databases and caching), and GPU Instances (NVIDIA-backed for AI training and inference). Instances support HotPlug — add CPU or memory to a running instance without rebooting. Full specs at docs.nubexcloud.com.

Yes — a shut-down UHost still incurs charges for reserved compute resources (CPU, memory, and storage), because underlying hardware capacity remains allocated. This is the same model used by major cloud providers. To stop billing entirely, you must delete or recycle the instance. To preserve your data while pausing costs, take a snapshot of your disk before deleting, then rebuild from the snapshot later.

You can migrate data using: SCP / SFTP for small to medium datasets over SSH; rsync for large incremental file syncs; Object Storage (US3) — upload to US3 first, then download to UHost — best for large transfers; or Custom Images — package your environment with Packer and deploy it directly as a new UHost instance.

Yes. UHost supports vertical scaling through configuration changes. Upgrades (adding CPU, memory, or disk) can be applied via the console under Configuration Changes. Some changes require a reboot; others use HotPlug for zero-downtime scaling. Billing is adjusted immediately on upgrade and prorated for the remaining period. See the configuration change guide.

No — they are two independent layers. The Nubex console firewall is a network-level security group enforced at the hypervisor, before traffic reaches your instance. It does not map to or modify iptables rules inside the VM. Both must allow traffic for it to reach your application. We recommend managing both layers for defense-in-depth security.

UDisk (Block Storage) acts like a virtual hard drive for a single UHost — best for OS disks, databases, and low-latency block I/O. US3 (Object Storage) is highly durable (12 nines) distributed storage for unstructured data accessed via S3-compatible HTTP API — best for static assets, backups, and data lakes. UFS (File Storage) is an NFS-compatible shared file system mountable by multiple instances simultaneously — best for shared application data and POSIX-compliant access. UPFS is a high-throughput parallel file system for HPC and AI/ML training.

The USnap Snapshot Service creates point-in-time copies of your UDisk volumes. Snapshots can restore a disk to a previous state, clone a disk to a new UHost, or migrate data between Availability Zones. Snapshots are incremental — only changed blocks are stored after the first full snapshot, keeping costs low. You can also use DataArk (UDataArk) for automated backup policies with configurable retention rules.

Yes — US3 supports an S3-compatible API, meaning tools and SDKs built for AWS S3 can be pointed at Nubex US3 endpoints with minimal configuration changes. This includes s3cmd, rclone, boto3, and the AWS CLI. US3 provides 99.9999999999% (12 nines) data durability through redundant storage across multiple nodes and racks. Full documentation at docs.nubexcloud.com/docs/ufile.

UDisk offers three tiers: RSSD (NVMe) — up to 1,200,000 IOPS and sub-millisecond latency, best for high-traffic databases and latency-sensitive apps; SSD — high performance with excellent price-performance ratio for most production workloads; Standard (HDD) — cost-effective for cold data, archives, and log storage. For MySQL on SSD, enabling innodb_flush_method=O_DIRECT significantly improves performance.

Create a US3 bucket, upload your assets, then enable UCDN (Content Delivery Network) and point it to your US3 bucket as the origin. UCDN will cache content at global edge nodes, dramatically reducing latency. You can bind a custom domain and SSL certificate to the CDN distribution. Full setup guide at docs.nubexcloud.com/docs/ucdn.

A UVPC is an isolated virtual network you fully control — your own private data center network where you define IP ranges, subnets, route tables, and which resources communicate with each other. All production workloads should run inside a VPC. Resources within the same VPC communicate over a private internal network at no bandwidth cost. External access is only possible through explicitly configured Elastic IPs, Load Balancers, or VPN gateways.

An EIP is a static public IPv4 address you own independently of any instance. It can be bound and unbound from instances at any time without downtime, stays with your account even if you delete the attached instance, and can be moved between instances in the same region for failover. EIP carries a 99.95% availability SLA. Billing is per hour for reserved bandwidth, plus per-GB if using traffic-based billing.

Create a ULB from the console, choose Layer 4 (TCP/UDP) or Layer 7 (HTTP/HTTPS), configure your listener, and add backend UHost instances as targets. ULB distributes traffic using round-robin, weighted round-robin, or least-connections. Layer 7 ULB also supports SSL termination, path-based routing, and health checks that automatically remove unhealthy nodes. Full guide at docs.nubexcloud.com/docs/ulb.

Nubex offers multiple hybrid connectivity options: VPN Gateway (UWAN) — IPSec VPN over the public internet, easy to configure and lower cost; Private Dedicated Network (UDPN) — a dedicated leased line with zero public internet routing, guaranteed bandwidth, and lowest latency for production hybrid environments; Cloud Enterprise Network (UGN) — a hub-and-spoke network connecting multiple VPCs and on-premise sites through a managed backbone.

Cloud DNS (UDNS) provides authoritative DNS management for your domains. Create and manage A, AAAA, CNAME, MX, TXT, and NS records from the console or API. UDNS supports health-check-based failover routing (automatically switching to a backup IP if your primary goes down) and geographic routing (different records for users in different regions). Simply update your domain's nameservers at your registrar to the UDNS nameservers shown in the console.

UWAF protects web applications against the OWASP Top 10 and more: SQL injection and NoSQL injection, Cross-Site Scripting (XSS) and CSRF, remote code execution and file inclusion, bot and crawler traffic, credential stuffing and brute-force login attempts, HTTP flood and application-layer DDoS, and zero-day exploit blocking via behavioral analysis. UWAF operates in reverse-proxy mode — no changes to your server infrastructure required. Documentation at docs.nubexcloud.com/docs/uewaf.

When a DDoS attack is detected on your IP, Nubex automatically routes traffic through a scrubbing center that filters attack traffic in real time. Clean traffic continues reaching your server with minimal latency impact while attack traffic is dropped. UDDoS covers volumetric attacks (SYN flood, UDP flood, ICMP flood), protocol attacks, and application-layer attacks. Packages scale from baseline to high-capacity protection for businesses under persistent attack. See docs.nubexcloud.com/docs/uantiddos.

Nubex offers SSL certificates through USSL, covering 13 certificate types across 5 trusted brands (TrustAsia, DigiCert, GlobalSign, Entrust, and others): DV (free TrustAsia DV for basic HTTPS, issued in minutes); OV (business-grade, verifying your organization identity); EV (highest trust, required for financial and e-commerce sites); Wildcard (covers a domain and all subdomains). Once issued, certificates can be deployed directly to ULB, UCDN, or UWAF with one click. Full guide at docs.nubexcloud.com/docs/ussl.

UAuditHost is a centralized access gateway for privileged operations on your cloud infrastructure. Instead of SSH-ing directly to servers, all admin access flows through the bastion host, which records every session for compliance and auditing. Use it when you need: role-based access control for server operations, full session recording (video playback of what admins did), compliance with ISO 27001 / SOC 2 / financial regulations, or centralized credential management without distributing SSH keys. See docs.nubexcloud.com/docs/uhas.

Nubex Cloud maintains the following compliance certifications: ISO 27001 — Information Security Management; SOC 2 Type II — Security, availability, and confidentiality controls; PCI DSS — Payment card industry data security standard. Compliance certificates and audit reports are available on request for enterprise customers. Contact your account manager or open a support ticket to request documentation.

Nubex offers two main billing models: Subscription (Monthly/Yearly) — pay upfront for a fixed period with discounts for 3-month, 6-month, and 1-year terms, best for stable predictable workloads; Pay-as-you-go (Hourly) — charged per hour based on actual usage, best for variable or short-lived workloads. Some products (bandwidth, Object Storage) also support traffic-based billing (pay per GB transferred or stored). Review the billing model before purchasing — it affects how credits are consumed and how refunds are calculated.

Enable auto-renewal on any subscription resource in the console. When enabled, the resource is automatically renewed 7 days before expiry using your account balance or saved payment method. If a resource expires without renewal, it enters a recycle period (typically 7 days) where it is stopped but not deleted — you can renew to restore it. After the recycle period, the resource is permanently deleted and data cannot be recovered. We strongly recommend enabling auto-renewal or monitoring expiry dates.

In the console, go to Billing → Invoice Management to view and download your invoices. Invoices are generated monthly and include an itemized breakdown by product, usage period, and amount. For VAT receipts, submit a request through the Invoice Management section. Enterprise customers with custom billing arrangements should contact their account manager. Documentation at docs.nubexcloud.com/docs/invoice.

Yes — subscription resources support prorated refunds when deleted before the subscription period ends. The refund is calculated based on remaining unused time and returned to your account balance. Note: some resource types may have a minimum usage period or non-refundable fees (for example, certain licensed software images). Review the product's billing terms before purchasing. For pay-as-you-go resources, billing stops immediately when the resource is deleted.

When you upgrade a subscription resource mid-cycle, you pay only the price difference for the remaining period. For example, upgrading 15 days into a monthly subscription means you pay the difference for the remaining 15 days. Upgrades take effect immediately. Downgrades are applied at the start of the next billing cycle to avoid service disruption. Full details at the configuration change billing guide.

MySQL — relational data, e-commerce, CMS, and most web applications. PostgreSQL — complex queries, GIS data, JSON alongside relational data, and analytics. MongoDB — flexible schemas, content management, and catalog applications with evolving data models. SQL Server — Microsoft .NET stack or legacy enterprise applications. Redis — in-memory cache for session management, real-time leaderboards, pub/sub, and sub-millisecond data access. TiDB — MySQL-compatible distributed NewSQL for very large datasets requiring both OLTP and OLAP.

Yes — all Nubex managed databases (UDB) include automated daily backups with configurable retention periods. Point-in-time recovery is available for MySQL and PostgreSQL, allowing restore to any second within the backup window. High-availability deployments include a standby replica in a separate Availability Zone. In the event of primary failure, automatic failover promotes the standby in under 30 seconds with no manual intervention. The 99.95% availability SLA covers HA-configured databases.

URedis is fully managed: no ops overhead — patching, upgrades, monitoring, and failover are handled by Nubex; built-in HA — master-replica with automatic failover, no Sentinel setup required; persistent storage — data persisted to disk with configurable AOF/RDB strategies; cluster mode — horizontal sharding when your dataset exceeds single-node capacity; VPC isolation — your Redis instance is only accessible from within your VPC, never exposed to the public internet by default.

Deploy your application (UHost) and database in the same VPC. The database uses a private IP reachable only from within the VPC — not exposed to the public internet by default. Your application connects using the private IP and standard database port. Always use strong passwords and enable SSL/TLS for the connection string. Consider using UAuditHost (Cloud Bastion Host) to audit DBA access to production databases. Never bind a managed database directly to a public IP.