With Storage Spaces Direct, Microsoft recommends the use of ReFS as the file system. Then I added 30% write and we can see the performance drop compared to two-way mirroring. I used stand-alone... M Do: From the snapshots above it's unclear which option was selec... M Do: I think the answer to my question is found. Thanks. I am hereby assuming (please correct me if I'm wrong) that you can manually "regulate" slabs size by tweaking the "New-VirtualDisk -AllocationUnitSize" parameter. By adding 30% write, I can’t expect better performance. Microsoft has released Windows Server 2019 with a new resiliency mode called nested resiliency. Storage Spaces Direct (S2D) supports also two node deployments with a Cloud, File Share or USB Witness. My CPU usage reached 95% that limit performance (but the latency is content to 6ms in average). I run my tests on the following platform composed of two nodes: Both servers are connected to two Ubiquiti ES-16-XG switches. SATA, SAS, and NVMe (M.2, U.2, and Add-In-Card) drives are all supported ReFS brings accelerated VHDX operations and some features against corruption. In our previous blog on Storage Spaces Direct, we discussed three different configurations that we jointly developed with Microsoft: IOPS optimized (all-flash NVMe), throughput/capacity optimized (all-flash NVMe and SATA SSD), and capacity optimized (hybrid NVMe and HDD). Therefore, I should expect to deploy more nested mirror-accelerated parity than nested two-way mirroring. 2x SMB vNIC for live-migration and SMB traffics (not routed). @Cosmos Darwin, could you please help me understand those terms before I commit them into my brain. Altogether there were 4 instan… In this section we describe a simple storage test by copying large files from a S2D storage cluster node to the Storage Spaces direct folder path. Storage Spaces Direct uses industry-standard servers with local-attached drives to create highly available, highly scalable software-defined storage at a fraction of the cost of traditional SAN or NAS arrays. Before Windows Server 2019, two-way mirroring (provide 50% of usable capacity) was mandatory in two-node S2D cluster. Just like Windows Server 2016, Storage Spaces Direct is included in the Windows Server 2019 Datacenter edition license, meaning for most Hyper-V customers, it is effectively no additional cost. Hello folks, I am happy to share with you that Microsoft just released Storage Spaces Design Consideration Guide and Software-Defined Storage Design Calculator.. Indicate what drives will be present in each node, excluding boot devices. There are over 1,000 components with the SDDC AQs.The fu… Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. I’m sure with a better CPU, I can get better performance. This mode enables to handle two failures in a two-node S2D cluster. Microsoft has released Windows Server 2019 with a new resiliency mode called nested resiliency. Create and optimise intelligence for industrial control systems. Now with Windows Server 2019, we have the choice. Nested Resiliency comes in two flavors: nested two-way mirroring and nested mirror-accelerated parity. You do not need to modify its settings, add or remove drives from the pool, nor create new pools. Capacity. Storage Spaces Direct: performance tests between 2-Way Mirroring and Nested Resiliency, Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), Click to share on LinkedIn (Opens in new window), Keep Dell Azure Stack HCI hardware up to date with WSSD Catalog, Design the network for a Storage Spaces Direct cluster, Implement a highly available Private Cloud to host virtual machines, Understand Microsoft Hyper Converged Solution, Step-by-Step: Deploy vCenter Server Appliance (VCSA) 6.5, 2-node hyperconverged cluster with Windows Server 2016, SCCM Software Update PART 1 – Introduction to SCCM and WSUS, Deploy a Windows Server 2019 RDS farm with HTML5 client, Don’t do it: enable performance history in an Azure Stack HCI mixed mode cluster, Getting started with Azure Update Management to handle Windows updates, Getting started with Rubrik to backup VMware VMs. Fortunately, Microsoft makes it fairly simple in S2D with only three steps: set it physically as retired, remove it … Hi Cosmos and thank you for this extremely useful explanation. 4. That was part one. You do not need to modify its settings, add or remove drives from the pool, nor create new pools. Another interesting thing is that Mirror-Accelerated Parity produce a slightly performance drop compared to 2-Way Mirroring but brings the ability to support two failures in the cluster. I saved 75% of storage. The articles described the process of building an Storage Spaces Direct hyper-converged cluster on actual hardware servers. But Usually I use the following settings: This site uses Akismet to reduce spam. He is focused on Microsoft Technology, especially on Hyper-V, System Center, Storage, networking and Cloud OS technology as Microsoft Azure or Azure Stack. Deep Dive: The Storage Pool in Storage Spaces Direct, resiliency types with differing storage efficiency, http://cosmosdarwin.com/Show-PrettyPool.ps1. The cmdlet is: Get-StorageHealthReport. Sorry I can’t remember which settings I used. My cluster is able to deliver 140K IOPS with a CPU workload of 82%. In RHEL , in LVM , it has a term which is physical or logical extent, usually it's 4MB, here the extent and slap is the same thing ? In the following test, I added 30% of write workloads. 2. I have not enough traffic in my lab to disturb RDMA without a proper configuration. Today you can witness Storage Spaces Direct in Windows Server 2016 Technical Preview 5 as it hits 60GBs per second. In my primary storage array, I use double redundancy on my parity, so effectively N+2. My contributions Storage Spaces Direct Monitor This S2D-Monitor (v0.8.2) based on the Windows Server 2016 Health Service for daily monitoring and troubleshooting. First, I ran the test without write workloads to see the “maximum” performance I can get. Storage Spaces Direct is a great technology that lends itself to some of the cutting-edge datacenter technologies out there today such as data center bridging, RDMA, and SMB Direct. Storage Spaces White Paper – Fujitsu; Storage Spaces and Parity – Slow write speeds; We’ve done a lot of work on Storage Spaces recently to try and find out why our new parity array on server 2019 was slow. If you've already registered, sign in. If my assumption is correct then why creating a New-VirtualDisk via PowerShell gives me a 1GB slab vs 256MB from the GUI? Storage Spaces Direct works with direct-attached SATA, SAS, or NVMe drives that are physically attached to just one server each. How to get Storage Spaces Direct in Windows Server 2019 . Im deep in testing my new S2D W2K19 2-Way-Nested-Resilency-Mirror-Cluster (even hard to spell) and like compare the results given by my VMFLEET Tests. Applies to: Windows Server 2019, Windows Server 2016. in HyperConvergence However, data deduplication and ReFS are not supported together in Windows Server 2016. I had a simple Storage Spaces mirror on my Windows 10 Pro desktop which consisted of (2) 5 TB drives using ReFS. You can use Storage Spaces to group two or more drives together in a storage pool and then use capacity from that pool to create virtual drives called storage spaces. After I deleted and recreated volumes in nested mirror-accelerated parity without deduplication. After having discussed with some customers, they prefer improve the usable capacity than performance. Compared to two-way mirroring, I have a slightly drop. Storage Spaces does not keep whole copies of volumes – rather, it divides them into tiny 'slabs' which are distributed evenly across all drives in all servers. The direct path uses the local path: C:\StorageCluster\ Copy data on each cluster node to the local path for the volume being tested. Pankaj Rajput: where can I get the below management pack. Storage Spaces Direct: performance tests between 2-Way Mirroring and Nested Resiliency. Storage Spaces Direct is also a great solution and often is much cheaper than high-end SAN storages from various vendors. Try Out the Latest Microsoft Technology. Even if I implemented that in my lab, it is not supported and you should not implement your configuration in this way for production usage. Good luck, Have fun, Build PC, and have a last gen console for use once a year. So first trend: deduplication has an impact on CPU workloads and if you plan to use this feature, don’t choose the low-end CPU. First, deduplication works great if you need to save space at the cost of a higher CPU usage. We followed up with a related article How to Build Windows Storage Spaces Direct on a Virtual Lab. Hardware:a 4-node Storage Spaces Direct cluster using Lenovo™ x3650 M5 servers, with Mellanox® ConnectX®-4 100Gb/s NICs (to ensure network bandwidth wasn’t a bottleneck). In particular, we are very interested in the performance of the Storage Spaces Direct (S2D) functionality and how well it performs with solid-state media such as our Micron 5100 SATA SSDs. Connect and engage across your organization. Can you provide your chosen parameters vor the sweep tests please? Storage Spaces Direct automatically creates one storage pool, which grows as your deployment grows. Additionally, the storage provisioning and management becomes part of the Windows Server 2016 operating system and not a separate entity that must be managed with disparate tooling and vendor utilizes. This ensures all drives and all servers are always equally "full". You must be a registered user to add a comment. How to Optimize Drive Usage in Storage Pool for Storage Spaces in Windows 10 Storage Spaces helps protect your data from drive failures and extend storage over time as you add drives to your PC. I run the VM Fleet with a block size of 4KB, an outstanding of 30 and on 2 threads per VM. For example, using two-way mirroring with three servers does. Nested Mirror Accelerated Parity takes also more CPU workloads than 2-Way Mirroring. Each vNIC is mapped to a pNIC. Probably the biggest benefit of using storage spaces is the resiliency it provides to your data. This article describes the deployment of such a two node deployment with HP ProLiant DL380 Gen10 Servers. 1. You can see also than the latency is great (2ms). AllocationUnit size is the block size in the file system of linux ? In addition, we recommend that servers, drives, host bus adapters, and network adapters have the Software-Defined Data Center (SDDC) Standard and/or Software-Defined Data Center (SDDC) Premium additional qualifications (AQs), as pictured below. I’m certain that two-way mirroring is faster than nested mirror-accelerated parity but the first one provides only 25% of usable capacity while the second one provides 40% of usable capacity. On Windows Server side, I added both Mellanox network adapters in a SET and I created three virtual network adapters: To test the solution I use VMFleet. Yes, that's GigaBytes. Posted by: Romain Serre Hi, thank you for sharing that. Even if it doesn’t support PFC/ETS and so one, RDMA is working (I tested it with test-RDMA script). When you execute this cmdlet for your cluster you will receive output like this: So the next step was to export this data to a CSV file which we could import into PowerBI. For Storage Spaces Direct this means that there is a PowerShell cmdlet which gives you the actual performance values. One of the most highly anticipated features in Windows Server 2016 was Storage Spaces Direct. Even though I don't use Storage Spaces Direct, this just about tears it for me with Microsoft. Skunkworks: R5 3500U, 16gb, 250 intel 730, 500gb Adata XPG 6000 lite, Vega 8. The storage pool is 're-balanced' whenever new drives are added, such as on scale-out or after replacement, to equilibrate how much data every drive is storing. Storage Spaces Direct automatically creates one storage pool, which grows as your deployment grows. Find out more about the Microsoft MVP Award Program. Empowering technologists to achieve more by humanizing tech. If the network is not well designed or implemented, you can expect poor performance and high latency. This performs the same action as the Optimize-Storage PowerShell cmdlet. Storage Spaces Direct Calculator PREVIEW. This had four problems: It was getting close to full; The drives were getting old Since then, we have been testing these configurations with Windows Server 2016 TP5 release in our lab and monitoring … demo environments) or single-node Azure Stack Development Kits. I should answer most of the time between 9 to 3 PST. N.B: I executed tests on my lab which is composed of Do It Yourself servers. There is another option to run ReTrim on volumes using defrag /L. NightHawk 2.0: R7 2700 @4.0ghz, B450m Steel Legends, H105, 4x8gb Geil EVO 2866, XFX RX 580 8GB, Corsair RM750X, 500 gb 850 evo, 500gb 850 pro and 5tb Toshiba x300. In two-node configuration, I’ll recommend to customer Nested Mirror-Accelerated Parity by paying attention to the CPU. In ESXI ,its datastore has a parameter: block size, usually it's 1MB,  here the block and slap is the same thing ? Secondly, nested mirror-accelerated parity requires more CPU workloads especially when there are write workloads. Posted by: Romain Serre in HyperConvergence October 17, 2018 2 Comments 7,152 Views. This results in 0 TB of physical capacity and 0 TB of cache per node. 2 min read. It documented how to create a virtual lab for Storage Spaces Direct using a common Windows PC. This is why I recommend to be careful about the CPU choice. Storage spaces can be configured on a Windows PC, a stand-alone server with all data stored in a single server, clustered server using storage spaces direct, and on a clustered server with one or more SAS storage enclosures. By looking closely to the below screenshot, you can see it’s because of my CPU that reach almost 97%. The CPU still limit the overall cluster performance. Community to share and get the latest about Microsoft Learn. Software:each node ran Windows Server® 2016 Datacenter Edition with Storage Spaces Direct enabled, and the DiskSpd storage performance test tool creating I/O load. It really helps me.... M Do: Found my answer and my setup is working. Quick access. In a Storage Spaces Direct cluster, the network is the most important part. IOPS: Storage IOPS update with Storage Spaces Direct(2) (MS blog) & Meet Windows Server 2016 and System Center 2016(3) (MS Presentation, IOPS discussion is at 28-minute mark). So nested mirror-accelerated parity require more CPU than two-way mirroring. I can lose any 2 drives without losing any data. First, deduplication works great also on nested mirror-accelerated parity volume. 06/28/2019; 10 minutes to read +5; In this article. Storage Spaces Direct uses industry-standard servers with local-attached drives to create highly available, highly scalable software-defined storage at a fraction of the cost of traditional SAN or NAS arrays. 7,183 Views. Finally, I enabled compression and deduplication. Count. From the arp tab... Support two failures in 2-node S2D cluster with nested resiliency, Monitor and troubleshoot VMware vSAN performance issue, NIC: Mellanox Connectx 3-Pro (Firmware 5.50), 1x Management vNIC for RDP, AD and so one (routed). Storage Spaces creates a storage pool with a set of drives, typically Direct Attached Storage (DAS). The following schemas illustrate the CPU bottleneck. Storage Spaces Direct–also known as S2D–allows admins to create scalable and highly availab… I lost “only” 17KIOPS to reach 123KIOPS. 2 Comments Moreover, I want to know if compression and deduplication has an impact on performance and CPU workloads. Storage Spaces Direct Monitor. For more help choosing drives, see the Choosing drives topic. Lately I worked for a customer to add two nodes in an existing 2-nodes Storage ... Microsoft just released Windows Server 2019 with a lot of improvement for Storage Spaces Direct. With Windows Server 2019, Storage Spaces Direct was one of the core features which have been improved. Also, given the AllocationUnit-term has already been taken (whenever you mention Allocation Unit, everyone automatically thinks at the cluster size), wouldn't it have been better to call the New-VirtualDisk parameter "-SlabSize" ?Please clarify for everyone's benefit and feel free to share (any) performance consequences between the two values (1GBvs256MB Slabs). For some context, that's the … As you can see, the RSS and VMMQ are well set because all Cores are used. As you can see, changing a failed physical disk on Storage Spaces Direct in Windows Server 2016 is usually not a big deal but needs some decent PowerShell skills. Fully managed intelligent database services. 3. Latency: S2D Performance iWARP vs. RoCEv2(5) (Chelsio benchmark report). First I created volumes in two-way mirroring without compression, then I enabled deduplication. As two-way mirroring with compression, I have poor performance because of my CPU (97% usage). Learn how your comment data is processed. Throughput: Storage Spaces Direct throughput with iWARP(4) (MS blog). Choose Your Drives. So, I wanted to compare performance between two-way mirroring and nested mirror-accelerated parity. Some customers didn’t want to adopt S2D because the capacity required by the resiliency was to important (especially with 3-way Mirroring, where 66% of the raw capa… Solution: After several quotes and consideration (and a great deal of begging on my part for the money), we were sold on a 4 node Storage Spaces Direct cluster. October 17, 2018 First, you can see that deduplication is efficient because I saved 70% of total storage. like: Systems, components, devices, and drivers must be Windows Server 2016 Certified per the Windows Server Catalog. In the case of deduplication, the latency always increases and I think because of CPU bottleneck. Download. Clusters of Storage Spaces Direct The figure cited is the number of currently active clusters reporting anonymized census-level telemetry, excluding internal Microsoft deployments and those that are obviously not production, such as clusters that exist for less than 7 days (e.g. Type + Add. it seems to me they are now 1GiB each. “.\start-sweep.ps1 -b 4 -t 4 -o 4 -w 10 -d 180”. Slap , AllocationUnit , datastore's block , LVM's extent , if they are not the same thing , what are the difference between them? The Pure Storage FlashArray provides all of the capabilities and more that Storage Spaces provides. Nested resiliency is a new capability of Storage Spaces Direct in Windows Server 2019 that enables a two-server cluster to withstand multiple hardware failures at the same time without loss of storage availability, so users, apps, and virtual machines continue to run without disruption. With deduplication enabled we can save space to increase the usable space. This mode enables to handle two failures in a two-node S2D cluster. Let’s spend a moment describing what was tested. SCVVM 2019 and SC... urag369: Many thanks. Software-Define d Storage (SDS) Design Calculator This spreadsheet helps you design a Software-Defined Storage (SDS) solution based on Windows Server 2012 R2 with Storage Spaces and Scale-Out File Servers. There’s a calculator for S2D, but not just plain old Storage Spaces … S2D-Monitor.ps1. The total IOPS is almost 97K for 87% of CPU usage. After I recreated volumes I run a test with 100% read. Thanks for this awesome script, @Cosmos Darwin, @Cosmos Darwin  can you confirm current implementation in RS5 of the slabs size (aka extents?) Planning volumes in Storage Spaces Direct. Tagged with: 2-way mirroring Nested Resiliency performance S2D Storage Spaces Direct Windows Server 2019. All Software-Defined are based on a healthy network whether it is Nutanix, VMware vSAN or Microsoft S2D. So please, don’t blame me in comment section . Based on our experience so far – we will re-evaluate once S2D is released later this year – S2D is a real IO performance beast. What I want to show is a “trend” to know what could be the bottleneck in some cases and if nested resiliency has an impact on performance. Otherwise, register and sign in. ? He is a MVP and he is certified Microsoft Certified Solution Expert (MCSE Server Infrastructure & Private Cloud), on Hyper-V and on Microsoft Azure (Implementing a Microsoft Azure Solution). This has some practical consequences. This topic provides guidance for how to plan volumes in Storage Spaces Direct to meet the performance and capacity needs of your workloads, including choosing their filesystem, resiliency type, and size. Then I run a VMFleet test and has you can see, I have a huge drop in performance. Storage Spaces divides data in slabs / chunks, so it can use different size drives, but with parity the math involved is a lot more complicated so there isn’t a universal equation (that Microsoft makes public anyway). In the cmdlet of new-volume and new-virtualdisk,  slap size = AllocationUnit Size ? When you deploy VMware vSAN in the vSphere environment, the solution comes from several tools ... Romain Serre works in Lyon as a Senior Consultant. The CPU usage is 82%. Leaving some unallocated 'reserve' capacity in the pool allows this fast, non-invasive, parallel repair to happen even before you replace the drive. 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