Skip to main content

High durability options for Compute Engine workloads

 

Durability - how well your data is protected from loss or corruption - is a critical feature of any data storage service. We often receive questions about how to design workloads for durability and what specific durability assumptions a workload can make about Persistent Disk, Google Cloud’s reliable, high-performance block storage for Compute Engine virtual machine instances. To help, we recently published details about how we design Persistent Disk for extraordinary durability.  

When we say “designed for”, disk durability represents the probability of data loss, by design, for a typical disk in a typical year using a set of assumptions about: 

  • Hardware failures
  • The likelihood of catastrophic events
  • Isolation practices and engineering processes in Google data centers
  • The internal encodings used by each disk type

  • Specifically, here are all the Persistent Disk types we offer:


    To understand what these numbers mean, 99.999% durability means that with 1,000 disks, you would likely go a hundred years without losing a single one. Let’s provide some background on how we accomplish this, and how you can achieve ultra-high durability. 


    How Google Cloud designs for durability 

    Persistent Disk manages physical disks and data distribution for you to ensure redundancy and optimal performance. Persistent Disk durability is always the same as or higher than three-way replication—each Persistent Disk byte is stored in three or more locations distributed across separate fault domains within a given Compute Engine zone.

    Because of this, data loss events are extremely rare and are usually the result of coordinated hardware failures, software bugs or a combination of the two. Our internal goal is zero data loss events per quarter. 

    Persistent Disks have built-in redundancy to protect your data against equipment failure and to ensure data availability through datacenter maintenance events. Checksums are calculated for all Persistent Disk operations, so we can ensure that what you read is what you wrote. Google also takes many steps to mitigate the industry-wide risk of silent data corruption.

    Every storage device in a Google datacenter is continuously monitored, both for errors returned during operations and through internal diagnostics. Data on devices that fail is re-replicated within minutes, and devices that are predicted to fail are safely drained and swapped.

    Security

    In addition to your data being stored durably, it is always encrypted in transit and at rest—there are no options or potential misconfigurations that can result in data being stored unencrypted. You also have the option to use CSEK or CMEK to encrypt the disk encryption key. Persistent Disk infrastructure performs automatic maintenance and replication without access to customer encryption keys. For a more detailed look at how we tackle physical security, data access, data disposal, and access logging, please see whitepapers published at https://cloud.google.com/security/.

    Regional disks and snapshots

    As an option for even higher durability, Regional Persistent Disks synchronously replicate data across two zones, providing protection if a zone becomes unavailable, even for an extended period of time. With this capability, a workload can fail over to a healthy zone and operate on intact data, experiencing no data loss. Taking advantage of this durability across zones, a secondary replica can be used to restore availability in a second zone in < 1 minute. 

    Taking periodic snapshots of disks provides  yet another layer of protection. Snapshots provide a backup copy of the data on your disk that is stored internally in Cloud Storage, providing even higher durability and recovery capabilities for disks. Snapshots also have the advantage of enabling recovery to earlier disk states that were backed up in the past. We recommend scheduling regular snapshots of any disk with important data.

    All Persistent Disk types provide extraordinary durability in addition to the price / performance you expect. To get started, check out more details about disk options.







    David Seidman
    Product Manager




    Comments

    What's Popular ?

    Use Vault for Gmail Confidential Messages and Jamboard Files

    Google vault will be supporting two new formats in the future, Gmail confidential mode emails & Jamboard files stored in Google Drive. Google Vault gives you a chance to retain, hold, search, and export data to support your organization’s retention and eDiscovery needs. This dispatch includes support for new information types with the goal that you can thoroughly oversee your association's information. What happens when individuals in your association sends confidential messages? Vault can hold, retain, search, and export all confidential mode messages sent by users in your association. Messages are constantly accessible to Vault, notwithstanding when the sender sets a termination date or denies access to private messages. Here’s an example of what admin@ink-42.com will see in Vault when they search for sam@ink-42.com and preview this email sent by lisa@ink-42.com . But It’ll not work vise versa. Admins can hold, retain, search and export message headers and s

    All you need to know about Cloud Storage

    Cloud Storage is a global, secure, and scalable object store for immutable data such as images, text, videos, and other file formats. You can add data to it or retrieve data from it as often as your application needs. The objects stored have an ID, metadata, attributes, and the actual data. The metadata can include all sorts of things,  including the security classification of the file, the applications that can access it, and similar information. The ID, metadata, and attributes make object storage an appealing storage choice for a large variety of applications ranging from web serving to data analytics.    Storage classes You store objects in buckets that are associated with a project, which are, in turn, grouped under an organization. There are four storage classes that are based on budget, availability, and access frequency.  Standard buckets for high-performance, frequent access, and highest availability - Regional or dual-regional locations for data accessed frequently or high-th

    Zoom’s Work Transformation Summit on Jan. 19: Fresh Approaches for Moving Forward

    These past two years have undoubtedly reshaped work. More specifically, these past two years — shuffling between remote, in-person, and hybrid work scenarios — reshaped what employees expect out of their jobs, how they want to work, and what the office means to them.  Organizations are challenged with making big decisions to meet those expectations, and those decisions will dramatically alter how they hire, manage their facilities, buy technology, and maintain productivity. Simply adjusting policies and retooling previous work models won’t do. It takes a comprehensive reimagining. To help organizations navigate this next phase of work, Zoom is hosting our  Work Transformation Summit  on Jan. 19, a free, half-day virtual event designed to provide you and your organization with meaningful strategies, creative approaches, and innovative solutions for redefining work.  Summit attendees will have the opportunity to hear from peers and industry experts on the importance of embracing technolo

    What’s new with Google Cloud

      Want to know the latest from Google Cloud? Find it here in one handy location. Check back regularly for our newest updates, announcements, resources, events, learning opportunities, and more.  Week of Mar 8-Mar 12 2021 Learn about the value of no-code hackathons —Google Cloud’s no-code application development platform, AppSheet, helps to facilitate hackathons for “non-technical” employees with no coding necessary to compete. Learn about Globe Telecom’s no-code hackathon as well as their winning AppSheet app  here . Introducing Cloud Code Secret Manager Integration — Secret Manager  provides a central place and single source of truth to manage, access, and audit secrets across Google Cloud. Integrating  Cloud Code  with Secret Manager brings the powerful capabilities of both these tools together so you can create and manage your secrets right from within your preferred IDE, whether that be VS Code, IntelliJ, or Cloud Shell Editor.  Learn more . Flexible instance configurations in Clou

    New intelligent suggestions for formulas and functions in Google Sheets

      You’ll now see in-line, sequential, context-aware suggestions for formulas and functions when working with data in Google Sheets.  Formula suggestions will make it easier to write new formulas accurately and help make data analysis quicker and easier. Simply begin inserting a formula in Sheets—suggestions will be automatically displayed and as you continue to type. You can view additional incremental suggestions in the drop-down menu. We hope these formula suggestions make it easier and faster for you to work with and analyze your data. Admins: There is no admin control for this feature. End users: This feature will be available  by default and can be disabled by going to Tools > Enable formula suggestions or from the three-dot menu of the suggestion dialog box. Rapid Release and Scheduled Release domains: Gradual roll-out (up to 15 days for feature visibility) starting on August 25, 2021 Available to all Google Workspace customers, as well as G Suite Basic and Business customers

    Your support partner for Google Workspace / Microsoft 365

    Your Support Partner For Google Workspace / Microsoft 365     Remote work is here to stay. Forbes.com mentions the percentage of "remote-capable" professionals who expect to work part of their time in the office and part of their time elsewhere—even if it's just one day a week—has risen to 53%, with even more, 59%, indicating that this is their preference. Today, 42% of respondents indicate they work in a hybrid arrangement, and 53% believe they will continue to do so in the future. With this emerging yet consistent trend, it should always be backed up with responsive & effective system support for your Google Workspace - which also provides you with the top notch collaboration tools to connect, create & collaborate.  1. Support at your ease.  Our Google Workspace Service offering thrives to enable you the full potential to work from anywhere, anytime. We stand by you for any Google Wor
    Every sustainable business realizes that cloud migration is essential for long-term success. However, many people are hesitant to begin the migration process because they fear data loss and are hesitant to take such an enormous leap. Nevertheless, the reality is that  data will continue to grow, necessitating additional infrastructure to handle it, both in terms of data storage and processing power for effective use of data. Organizations that are hesitant to transition to the cloud sometimes miss out on the benefits that cloud-native capabilities can deliver, such as faster machine learning timelines and the potential to leverage artificial intelligence to harvest more insights from data. If at all your organization is hesitant to move to the cloud, we got you covered! Finetech offers end to end service in all aspects of Data Migration. This would not only from on-premises to the cloud, but also : Cloud (3rd party Cloud Email providers) to Google Cloud PST (local archives) to Google C
    Big announcement!  As a part of our growth, Finetech is pleased to announce the expansion of our business in Bangladesh. With 12 years of excellence in helping organizations to digitize and providing with all aspects to keep up with the relevant, and up-to-date technology required to create an efficient workplace, Finetech Pledges to do so for the years to come throughout South Asia. As an objective to bring about the best Cloud services to South Asia, we have now kick-off our venture in Bangladesh.  We have identified Bangladesh as a fast developing country, and the need for an efficient work environment has been in need ever since. We understand the urgent technology challenges organizations face with incessantly changing tortuous business requirements. We also understand that orthodox ways of seeking solutions for these problems are no longer valid in the present day. We at Finetech believe that Cloud is the next big wave in technology. Our purpose is to bring the best of Cloud solu

    Set start times and import reminders in Tasks

    Here comes one of the most awaited features. Tasks is one of the goals to follow what you have to do in G Suite. These new updates will help ensure the majority of your to-dos are in Tasks, and guarantee that you can monitor the due dates related with them. Moreover, importing reminders to Tasks can support your users if your association is at present changing from Inbox to Gmail. Set a date and time for your tasks and receive notifications - You’ll find a place to add date & time. Create repeating tasks - Also you can make an event recur. Import reminders into Tasks This import tool will pull your reminders (from Inbox/Gmail, Calendar, or the Assistant) into Tasks.When importing reminders into Tasks, we’ll copy over the title, date, time and recurrence of the reminder. Please note, reminders with locations associated will not be imported. Additionally, this is a one-time import and not a constant sync. - When you open Tasks on the web or your mobile app, you’ll se

    Live translated captions in Google Meet are now generally available

    What’s changing  In 2021, we announced a beta for live translated captions in Google Meet. We’re now making live translated captions generally available for select Google Workspace editions.  Meeting participants can translate English meetings to:  French  German  Portuguese  Spanish  Translated captions are available on Google Meet on web and mobile devices.  Who’s impacted  End users  Why it’s important  Translated captions help make Google Meet video calls more inclusive and collaborative by removing language proficiency barriers. When meeting participants consume content in their preferred language, this helps equalize information sharing, learning, and collaboration and ensures your meetings are as effective as possible for everyone. This feature can be particularly helpful for all-hands meetings or training meetings with globally distributed teams. Additionally, translated captions can be impactful in education settings, allowing educators to connect and interact with students, p