Block Storage India 2026: How to Expand Your VPS Disk Without Migration

The disk full problem

It happens to every growing application: your VPS was provisioned with 80 GB of NVMe, the database grew faster than expected, and now disk usage is at 85% and climbing. The traditional solution is to migrate to a larger VPS — which means provisioning a new server, copying data across, updating DNS, testing, and cutting over. On a live production system, that is hours of risk.

Block storage solves this without migration. You create a persistent volume, attach it to your running VPS in seconds, format it, and mount it. Your VPS gains a new disk device (/dev/sdb) that you can use for database files, media uploads, or any other storage-heavy workload — without touching the existing OS disk or moving the server.

How block storage works in practice

Block storage volumes are independent of the VPS they attach to. They exist in the same Mumbai datacentre, connected via a high-speed storage network. From the VPS perspective, an attached volume looks exactly like a locally connected disk — you can partition it, format it with ext4 or xfs, and mount it anywhere in your filesystem hierarchy.

A typical workflow for moving a MySQL data directory to a block volume:

1. Create a 500 GB volume in the HostStack panel and attach it to your VPS
2. Format: mkfs.ext4 /dev/sdb
3. Mount: mount /dev/sdb /mnt/data
4. Stop MySQL, rsync data directory from /var/lib/mysql to /mnt/data/mysql
5. Update MySQL config (datadir), add volume to /etc/fstab, restart MySQL

Total downtime: the time to rsync and restart MySQL. No DNS changes, no new server, no certificate re-issue.

Key benefits for Indian developers

Storage independence from compute. Your data outlives any individual server. Delete a VPS, provision a replacement, attach the same volume — all data is immediately available. This is the right architecture for production: treat servers as replaceable, treat data as permanent.

INR billing and GST invoices. HostStack block storage is billed in Indian rupees with GST-compliant invoices. At Rs 3.50/GB/month for a 100 GB volume, you are paying Rs 350/month for a dedicated NVMe disk — predictable, domestic currency, no forex risk.

Snapshot before every risky operation. Before a major schema migration, a dependency upgrade, or any operation that could corrupt data, take a volume snapshot. If anything goes wrong, restore to the snapshot in minutes. No need to restore from a full backup.

Get early access

HostStack Block Storage is in development for the Mumbai datacentre. Join the waitlist and be notified at launch with early-access pricing. Questions? WhatsApp us at +91 97482 79915.

FAQ

Can I attach a block storage volume to any VPS?

HostStack block storage volumes are compatible with HostStack KVM VPS in the same Mumbai datacentre. Volumes appear as raw block devices and work with any Linux OS. Windows Server is also supported — the volume appears as an unformatted disk in Disk Management.

Does attaching a volume require a server reboot?

No. Block volumes can be attached to a running KVM VPS without a reboot. The device appears (e.g. /dev/sdb) within seconds. You then format it and mount it as a standard Linux filesystem operation.

What happens to my data if I delete the VPS?

Block storage volumes are independent of the VPS. If you delete a server, the volume persists and retains all data. You can then attach it to a new or existing VPS. This makes it safe to rebuild, replace, or resize servers without data loss.

Block storage vs object storage: which one do I need?

Use block storage when your application needs a mountable filesystem — databases, application state, large file uploads, dev environments. Use object storage when you need to store and retrieve files via HTTP API — backups, media, static sites. Block storage is a disk; object storage is a bucket.