While Swift uses rings (md5 hash range mapping against sets of storage nodes) for consistent data distribution and lookup, Ceph uses an algorithm called CRUSH for this. © 2005 - 2020 Mirantis, Inc. All rights reserved. This leads to, what I believe is, the biggest fundamental difference between Swift and Ceph. , with its closed off replication network, is preferable if speed isn’t the deciding factor and security is a bigger issue. For write operations, Ceph performs better when the size of the objects is small. Your email address will not be published. On the other hand, Swift is an object-focused product that can use gateways to support file access. Why the World Still Needs Private Clouds: The Why and How of Going Cloud-Native with Kubernetes and OpenStack On-Premises. Swift and Ceph both deliver object storage; they chop data into binary objects and replicate the pieces to storage. when doing this you should have SSDs for the Swift container servers).. Commvault vs. Zerto: How do their DR products compare? To solve this problem, many Swift environments implement high availability for the Swift gateway. Also, both Ceph and Swift were built with scalability in mind, so it's easy to add storage nodes as needed. Ceph delivers unified storage, supporting File, Block, and Object. For now, let’s look at their architectural details and features, so we can hone in on the difference between Ceph and Swift. Swift is a better match for very large environments that deal with massive amounts of data. Ceph can reach a better performance with more parallel workers than Swift. There is some feature overlap between both but the two have different use-cases and can actually live happily together in the same deployment. Dive into... See how VMware, Cisco, Nutanix, Red Hat and Google -- along with NetApp, HPE and Dell EMC -- make Kubernetes integration in HCI ... Composability provides the agility, speed and efficient resource utilization required to support advanced workloads that continue... All Rights Reserved, Our product names have changed. I've seen a few toy S3 implementations. These include Docker Enterprise Container Cloud (now Mirantis Container Cloud), Docker Enterprise/UCP (now Mirantis Kubernetes Engine), Docker Engine - Enterprise (now Mirantis Container Runtime), and Docker Trusted Registry (now Mirantis Secure Registry). Conclusions. When engineers talk about storage and Ceph vs Swift, they usually agree that one of them is great and the other a waste of time. Sign-up now. Copyright 2000 - 2020, TechTarget If cloud infrastructure is well-protected and security is a lower priority, that situation favors Ceph. Your email address will not be published. Ceph vs Swift – An Architect’s Perspective. Trouble is, they usually don’t agree on which one is which. That difference is a direct result of how both object storage systems handle data consistency in their replication algorithms. In Swift, the client must contact a Swift gateway, which creates a potential single point of failure. I would be highly interested in the Ceph vs Swift performance degradation when putting a large amount (millions) of objects on a bit beefier hardware (e.g. Swift debate, Ceph offers more flexibility in accessing data and storage information, but that doesn't mean it's a better object storage system than Swift. Ceph can be integrated several ways into existing system environments using three major interfaces: CephFS as a Linux file system driver, RADOS Block Devices (RBD) as Linux devices that can be integrated directly, and RADOS Gateway, which is compatible with Swift and Amazon S3. Ceph: InkTank, RedHat, Decapod, Intel, Gluster: RedHat. I think the author was specifically referencing the fact that if any Ceph node becomes compromised it can see and view the unencrypted traffic traversing that network and nodes. Do Not Sell My Personal Info. Ceph performs better at handling an increasing number of parallel requests. Typically you would use the same private network that Ceph uses for replication as the backend for the Ceph nodes. notacoward on Mar 20, 2018. Concerning the partition power, I think this article [1] (which is a bit Start my free, unlimited access. With replication possible only from master to slave, you see uneven load distribution in an infrastructure that covers more than two regions. But to complete the OpenStack storage story, it's important to address block-IO. We compared these products and thousands more to help professionals like you find the perfect solution for your business. This is usually a non routable network to minimize latency while increasing security. Swift and Ceph both deliver object storage; they chop data into binary objects and replicate the pieces to storage. This leads to, what I believe is, the biggest fundamental difference between Swift and Ceph. Next message: [Openstack] Ceph vs swift Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Hello Remo, That is quite an open ended question :) If you could share a bit more about your use case, then it would be easier to provide more detailed information, but I'll try to cover some of the basics. You might think Ceph or Swift are better, that's fine, but it's no toy. Kubernetes tutorials, product updates and featured articles. Rather than choosing one over the other, it may make sense to have both Swift and Ceph alternatives in the same cloud infrastructure. Earlier I had shared an article with the steps to configure ceph storage cluster in OpenStack.Now let me give you some brief overview on comparison and difference between cinder vs swift storage in OpenStack. We are doing a performance evaluation study on Ceph vs Swift for small storage clusters. Since CEPH supports all three types of storage (Block, File and Object) why still Swift will be in use, since it only supports object storage. In short, CRUSH is an algorithm that can calculate the physical location of data in Ceph, … On the other hand, Swift in the same two-region architecture will be able to write locally first and then replicate to the remote region over a period of time due to the eventual consistency design. That's libelously untrue. It was a big year for backup and recovery. Save my name, email, and website in this browser for the next time I comment. In the Ceph vs. OpenStack Swift or Ceph with Ceph Object Gateway. Swift also requires a write quorum, but the write_affinity setting can configure the cluster to force a quorum of writes to the local region, so after the local writes are finished the write returns a success status. Swift focuses purely on object storage, while Ceph provides object, block and filesystem storage. Computer Weekly – 1 May 2018: Making music with AI, Optimizing Storage Architectures for Edge Computing: 5 Design Considerations. In many cases, that is XFS, but it can be an alternative Linux file system. But Ceph and Swift are not actually competing with each other: they are two different technologies, each with a different purpose. The bottom line in the Ceph vs. Swift debate, Ceph offers more flexibility in accessing data and storage information, but that doesn't mean it's a better object storage system than Swift. Companies looking for easily accessible storage that can quickly scale up or down may find that Ceph works well. Ceph performs well in single-site environments that interact with virtual machines, databases and other data types that need a high level of consistency. Interesting to see someone comparing Ceph vs Swift performance. Privacy Policy •Ceph performs better when reading, Swift when writing •Ceph → librados •Swift → ReST APIs over HTTP •More remarkable difference with small objects •Less overhead for Ceph •Librados •CRUSH algorithm … Ceph can contact the OSD to get information about the storage topology and where to go to gather the binary objects to gain access to original data. Swift has some disadvantages and advantages over CEPH. However, a solution with both components incurs additional cost, so it … * Fewer technologies to get familiar with. The results should be published soon, so if the use case is of interest to you you will have some material to analyze :). Se requiere de un software administrador que haga un seguimiento de todos los bits que agrupan los archivos que se alojan. Ceph is a block-focused product that has gateways to address it other ways (object, file). Trouble is, they usually don’t agree on which one is which. Ceph data is strongly consistent across the cluster, whereas Swift data is eventually consistent, but it may take some time before data is synchronized across the cluster. Predictably, some 2019 forecasts of what disaster recovery might look like in 2020 didn't quite hit the mark. For example, you could use Ceph for local high performance storage while Swift could serve as a multi-region Glance backend where replication management is important but speed is not critical. Please note: Mirantis has realigned its portfolio and renamed several products. Since Ceph also provides block and filesystem storage, it chooses consistency and partition tolerance over availability. Another reason many people think Ceph is the better alternative is that Swift does not provide block or file storage. If cloud infrastructure is well-protected and security is a lower priority, that situation favors. From the beginning, Ceph developers made it a more open object storage system than Swift. 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