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How to Set Up a Secure Isolated Recovery Environment (SIRE)

When disaster strikes, getting critical business systems back up and running fast is crucial. See how a secure isolated recovery environment (SIRE) can help you resume operations quickly.

Set Up a Secure Isolated Recovery Environment
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Whether systems go down from a cyberattack, natural disaster, or hardware failure, the reality is the same: How fast you recover impacts business survival. Yet many organizations treat backup and recovery as an afterthought until disaster strikes. By then, it’s too late to rethink strategy.

A secure isolated recovery environment (SIRE) isn’t just another backup—it’s your fail-safe. When the worst happens, a well-designed SIRE ensures you can restore critical operations quickly, cleanly, and with confidence.

What Is a Secure Isolated Recovery Environment (SIRE)?

A SIRE is a special environment for storing and protecting clean backups of data. Unlike typical backups, SIREs are intentionally stored away from the main network so that data can’t get infected or deleted in the event of a cyber incident or other disaster.

Isolation is key. Because the faster your teams can access clean data after a breach, outage, or attack, the sooner they can get critical business systems back up and running.

SIRE vs. Clean Rooms: What’s the Difference?

You may have also heard about clean rooms. Both SIREs and clean rooms are important in building cyber resiliency, but they serve different purposes.

  • SIREs focus on recovery. They store and protect data, ensuring clean backups can be quickly restored to resume operations.
  • Clean rooms support investigations. These controlled environments allow experts to analyze malware, conduct forensic investigations, and handle sensitive data without risking further network exposure.

Why You Need a SIRE Now—Not Later

After a major breach, assume your entire environment is compromised. Even systems that appear untouched may be subject to investigation, regulatory scrutiny, or insurer restrictions. This means:

  • Authorities may seize or quarantine hardware for forensic analysis.
  • Insurers might not allow immediate system reinstatement, or ever. 
  • Internal teams may need to preserve systems for investigation or legal holds.

How do you get back online fast? Use your SIRE. 

With an isolated recovery environment, IT teams can restore essential operations without waiting for clearance on compromised systems.

A robust SIRE enables you to:

  • Begin recovery while the forensics process is underway.
  • Stage and orchestrate the reintroduction of critical applications.
  • Test changes before going back into production.
  • Use it as a temporary run environment to restore business applications as fast as possible.

Given its importance, the best time to build a SIRE was yesterday. The second-best time is now.

How a SIRE Strengthens Cyber Resilience

Cyber resilience isn’t just about prevention—it’s also about recovery. The ability to restore operations quickly determines how much damage an incident inflicts. A well-implemented SIRE provides:

  • A guaranteed point recovery. Instead of storing everything, you only store the most critical applications and data required to operationalize the business.
  • Faster system restoration. There’s no time wasted verifying which backups are clean.
  • Operational continuity. The sooner you get the main business back up, the more time you have to get less critical systems back online and complete the forensics review. 
  • Reduced financial risk. Downtime is expensive; a SIRE minimizes disruptions and reputational damage.
  • Regulatory compliance. Many regulations (e.g., GDPR, HIPAA) require robust disaster recovery strategies. SIREs help meet those standards.
  • Faster security testing. A pre-built SIRE can serve as a security testing zone to speed up patches, deployments, and scenario testing.

Why Most SIREs Don’t Deliver When It Counts

Most SIREs are built around three core components: Air-gapped data vaults, immutable storage, and recovery capability. 

The idea is to facilitate speed and reliability. Teams must access backups and restore systems quickly. And the backups must be clean and complete. But here’s where traditional SIRE frameworks often fall short:

Air-gapped data vaults

While air gaps are designed to isolate data, they often slow down recovery when time matters most. Accessing your backups becomes just as hard for your team as it is for attackers. Air-gapped systems are also expensive to build, hard to manage, and not immune to insider threats or stolen credentials.

Immutable storage

Backups need to be tamper-proof to be trusted. But many systems don’t offer true immutability. If an attacker gains admin access, they may still be able to delete or corrupt backup data. And without clear verification processes, you can’t be sure if your backups are safe or already compromised.

Recovery capability

Having the data isn’t enough—you need to restore it quickly. Traditional recovery is often slowed by manual steps, disconnected tools, and strict access controls. Even well-protected environments can be too complex to operate efficiently in a crisis.

The result? Even with all the right parts in place, many SIREs are too slow, too exposed, or too complicated to trust when the pressure is on.

How the Pure Storage Platform Enables a Faster, More Reliable SIRE

A strong SIRE is only as effective as its ability to isolate threats, protect clean data, and recover fast. Pure Storage brings together these  key elements of cyber resilience so organizations can bounce back faster from attacks and disasters.

SafeMode™ Snapshots:

  • Lock backups so they can’t be deleted or changed—even by admins
  • Restore instantly to avoid delays from offline or corrupted backups
  • Automate protection with built-in snapshot scheduling
  • Confirm backups are clean before restoring to reduce risk of reinfection

Evergreen//One™cyber recovery and resilience SLA:

  • Receive new restore arrays if your production systems are unavailable or under embargo (shipped within 24 hours)
  • Start a tailored recovery plan within 48 hours of an attack
  • Transfer data fast—up to 8 TiB/hour—for faster system restoration
  • Get expert help from planning through full system replacement

Pure Protect™ //DRaaS on-demand disaster recovery as a service:

  • Scale recovery resources as your needs grow without overbuying
  • Avoid costs tied to idle or unused infrastructure
  • Support seamless failover and failback for VMware using AWS
  • Maintain full control of your data by using your own AWS credits and discounts

Veeam Plug‑in (Active‑Active‑Async)

  • Supports a third FlashArray at a DR site or in a SIRE topology for orchestrated recovery paths

Rubrik Threat Intelligence integrations

  • Can flag snapshot data integrity issues during triage and recovery within the SIRE

You can’t predict every threat, especially as attacks become more complex and harder to detect. But you can build a recovery strategy that’s ready for anything.

A well-designed SIRE gives you the confidence to move quickly when systems go down. It reduces risk, limits damage, and helps keep your business running.

So why wait? Start the conversation with your IT and security teams today. The sooner you modernize your recovery environment, the better prepared you’ll be for whatever comes next.

FAQ

A secure isolated recovery environment (SIRE) is a dedicated, isolated environment used to store and protect clean backups of your most critical data and applications, separate from the primary network and production systems. This separation means that if your main environment is hit by a cyberattack, natural disaster, or major hardware failure, you still have a trusted place to recover from, so you can restore operations quickly and confidently.

A SIRE is designed primarily for recovery, while a clean room is designed for investigation. In practice, the SIRE is where you store and restore clean backups so business operations can resume, whereas a clean room is a tightly controlled environment where specialists analyze malware, reconstruct what happened, and handle sensitive evidence without exposing the rest of the network to additional risk. Most mature organizations ultimately need both capabilities, but they serve distinct purposes in the incident response lifecycle.

After a serious breach or ransomware attack, you should assume that the entire environment is potentially compromised, including systems that appear to be functioning normally. Regulators, law enforcement, cyber insurers, or internal legal teams may require you to preserve hardware and systems for investigation, which can prevent you from simply turning everything back on or reusing production arrays immediately. A pre‑built SIRE lets you restore essential services in an isolated, trusted environment while forensics and legal processes continue, so you can maintain business continuity instead of waiting weeks or months for clearance.

A SIRE does not replace traditional backup and disaster recovery; it complements and sharpens them. You still need comprehensive backups, runbooks, and DR processes, but the SIRE focuses on a curated subset of the most critical applications and data required to keep the business running when the primary environment cannot be trusted. This targeted approach makes it possible to recover faster and more predictably while controlling cost and complexity.

Cyber resilience is about how quickly and safely you can recover, not just how well you can block attacks. A well‑implemented SIRE strengthens resilience by giving you a guaranteed point of recovery for essential workloads, by eliminating guesswork about which backups are clean, and by providing a place where you can bring critical systems back online even while investigations and remediation continue elsewhere. The result is shorter downtime, less revenue loss, reduced reputational impact, and a clearer path to complying with regulatory expectations around disaster recovery and business continuity.

Many SIREs look sound on paper but struggle in real incidents because of how their components are implemented. Air‑gapped vaults may be so hard to reach that the organization’s own teams cannot access backups quickly during an emergency, and these vaults can be expensive, operationally complex, and still subject to insider misuse or stolen credentials. Some platforms advertise immutability but still allow privileged users to corrupt or delete backup data, or they lack clear processes for validating that a given restore point is truly clean. Recovery can also be slowed by manual steps and disconnected tools, so even with backups available, restoring systems at scale is too slow or too fragile when time and pressure are high.

A SIRE should be scoped to the minimum set of workloads that keep the business viable, not a one‑to‑one copy of your entire data center. In practice, that usually means the core transactional systems that drive revenue or essential operations, the identity and access infrastructure that allows users to authenticate, and the supporting applications and data stores that must function for the wider environment to operate safely and effectively. By focusing on this critical subset, you can design a SIRE that is faster to recover, easier to test, and more economical to maintain.

The Pure Storage Platform brings together isolation, immutability, and rapid recovery in ways that map directly to SIRE requirements. SafeMode Snapshots make backups effectively tamper‑resistant so they cannot be changed or deleted, even by administrators, and they support near‑instant restores from known‑good points so you are not waiting on slow, offline media or questionable copies. Snapshot policies allow you to automate protection and incorporate verification and testing so you reduce the risk of re‑introducing compromised data during recovery.

Evergreen//One cyber recovery and resilience SLAs add an additional layer by committing to ship new restore arrays when production systems are unavailable or under embargo, typically within about a day, and to help initiate a tailored recovery plan within roughly two days of the attack. High‑throughput data transfer on the order of multiple tebibytes per hour, combined with expert guidance, is aimed at getting you from crisis to restored operations as quickly and predictably as possible.  

Pure Protect //DRaaS extends this model into an on‑demand service so that you can scale recovery resources as your needs evolve, avoid paying for idle infrastructure, fail over and fail back VMware environments using AWS, and still maintain control over your spend by using your own AWS credits and discounts. All of these capabilities are explicitly designed to be used under real‑world incident conditions, not just in theory.

The article highlights two integrations that deepen how a Pure‑based SIRE operates in practice. The Veeam Plug‑in with Active‑Active‑Async replication enables you to use a third FlashArray at a disaster recovery site or within your SIRE topology, which allows for more orchestrated, policy‑driven recovery paths that can be aligned with your business continuity priorities. Rubrik Threat Intelligence integrations can evaluate snapshot data integrity as part of triage and recovery, helping you detect and avoid restoring malware‑contaminated backups into the SIRE itself. Together, these integrations help turn the SIRE into a coordinated ecosystem rather than an isolated island of storage.

Although SIREs are often discussed in the context of ransomware and cyberattacks, the same pattern is useful whenever your primary environment is unavailable, untrustworthy, or under strict constraints. That includes natural disasters that damage facilities, major infrastructure failures that take data centers offline, and situations where hardware must be taken out of service for safety or compliance reasons. In each case, the SIRE functions as a pre‑planned, trusted landing zone where you can re‑establish critical operations while you repair, rebuild, or relocate the rest of your environment.

The most important step is to start designing before you need it, by bringing together IT, security, risk, and business stakeholders to agree on what “must be running” for the organization to function. Once you have that shared definition, you can decide where the SIRE will live, how it will be isolated from production, how you will populate it with clean, immutable backups, and how Pure capabilities such as SafeMode Snapshots, Evergreen//One cyber recovery SLAs, and Pure Protect //DRaaS will be incorporated into concrete runbooks. Aligning these technical plans with regulatory, legal, and cyber‑insurance expectations ensures that when you do need to activate the SIRE, it supports rather than conflicts with your obligations during investigation and recovery.






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