Designed for ≤ 1 volume failure per 100,000 over a year. Always-on AES-256 encryption included.
Single-digit-millisecond reads, sub-millisecond writes for hot data on premium tiers. Measured across KHI-1 and ISB-1.
Every byte of every volume, every snapshot, every replica — inside PTCL Tier-3 / Rated-3 certified data centers. Nothing leaves the country.
One block-storage service. Every workload your ECS instance can throw at it.
QCloud Elastic Volume Service is a network-attached, SSD-backed block storage layer that lives next to your ECS instances. Each EVS volume behaves exactly like a local disk — but it is durable, encrypted, snapshottable, replicable across availability zones, and resizable without downtime.
Across our fleet today: 5,800+ volumes — all green.
A live snapshot of QCloud EVS volumes serving production workloads inside Pakistan right now.
Built for storage that cannot fail — and cannot leave Pakistan.
Reliable, secure storage by default.
Every EVS volume is replicated synchronously inside its availability zone to survive single-hardware failures. AES-256 encryption at rest is on by default; keys are HSM-backed and never leave Pakistan.
Dedicated, predictable I/O.
EVS-optimized ECS instances provide dedicated network throughput between compute and storage — so your volume's IOPS aren't fighting your application traffic.
Resize. Online. Hot.
Grow a volume's capacity, change its type, or tune its IOPS — all without detaching it, all without downtime.
99.999% durability — engineered, not promised.
Designed for 99.999% durability with automatic redundancy across hardware components. Combine with cross-region snapshot replication (KHI-1 ↔ ISB-1) for a complete sovereign DR posture.
Pick the shape that fits your workload — change it later if you're wrong.
Four EVS volume types, all on the same elastic platform. Switch between them online — no detach, no downtime.
General Purpose SSD
The default for almost everything. SSD performance that balances cost and speed — gp3.std is the right answer 80% of the time.
Provisioned IOPS SSD
Engineered for the heaviest, most latency-sensitive transactional workloads. SAP HANA, Oracle DB, SQL Server. Provision exactly the IOPS you need — guaranteed.
Throughput-Optimized HDD
For Hadoop, Kafka, ETL, video transcoding. Low cost per GB; high sustained throughput.
Cold HDD
The lowest cost-per-GB tier for infrequently accessed data — regulatory archives, backups, historical logs.
Tell us what you run — we'll tell you what to mount.
Eight common workload patterns, each mapped to the EVS volume type that fits best.
Performance that scales with you — and a chart to prove it.
EVS publishes the entire performance curve, so you can size volumes for the performance you actually need.
One volume. Three lifecycle promises. Zero data loss.
Replicated the moment it's created.
Every EVS volume is automatically replicated within its availability zone the instant it's created. A single hardware component can fail without your application noticing.
Outlives the instance it's attached to.
Terminate a VM and its attached EVS volumes automatically detach — with the data intact. Re-attach them to another instance, snapshot them, or keep them for archival.
A point-in-time copy. In one click.
Create a snapshot of any EVS volume — incremental after the first — and restore it to a new volume at any time. Move volumes between regions, clone production for testing.
Five security layers. No opt-in. No extra cost.
Fine-grained IAM and RBAC.
Every API call to create, attach, or delete a volume is authenticated against QCloud IAM. Map roles to teams, audit every action in real time.
AES-256, always on.
Every byte written to an EVS volume is encrypted with AES-256 before it touches the storage fabric. No checkbox to forget.
HSM-backed key custody.
Keys are generated, stored, and rotated inside QCloud's HSM-backed KMS — never exported, never copied outside Pakistan. BYOK supported.
TLS between every hop.
All traffic between ECS instances, the EVS storage plane, and replication targets is encrypted with TLS 1.3.
Immutable audit logs. Inside Pakistan.
Every volume API call generates an immutable audit log. All data stays inside PTCL Tier-3 certified data centers in KHI-1 and ISB-1.
Snapshots that travel between provinces — not between countries.
Replicate any EVS snapshot between Karachi (KHI-1) and Islamabad (ISB-1) — parallel, checksum-validated, and entirely inside Pakistan.
Everything you need to know before you attach a single volume.
Attach your first EVS volume — on the house.
$100 in QCloud credit. A 1-month free trial of EVS, ECS, and Auto Scaling. A real storage architect on the call from day one.