Nx-3155gn-g8. 0-U-CM is an upgrade tpm 2. Nx-3155gn-g8

 
0-U-CM is an upgrade tpm 2Nx-3155gn-g8  Please login to access the full list of documentation

Cables. Check part details, parametric & specs updated 04 NOV 2023 and download pdf datasheet from datasheets. 1 ghz, 8 cores, cascade lake). The SSDs contain the Controller VM and metadata. When configuring 2, 3, or 4 GPUs, the number of add-on NIC supported is 0 or 1. nx-3155gn-g8, nx-3170n-g8, nx-8150n-g8, nx-8155n-g8, and nx-8170n-g8 Block Connection in a Customer Environment After physically installing the Nutanix block in the datacenter, you can connect the network ports to the customer's network. Server hp dl360p g8 Specs in photo Reference #3The NX-3170-G8 block contains a single node named Node A. Check part details, parametric & specs updated 03 NOV 2023 and download pdf datasheet from datasheets. Check part details, parametric & specs updated 10 NOV 2023 and download pdf datasheet from datasheets. Unique storage efficiency technologies have been built into Nutanix to maximize the usable capacity within a cluster. Nutanix's NX-1365-G8-4309Y-CM is a nx-1365-g8 3 node, 2x intel xeon-silver 4309y processor (2. NX-3160-G6-6126-CM. Check part details, parametric & specs updated 14 AUG 2023 and download pdf datasheet from datasheets. They offer a streamlined IT operations (ITOps) experience for all your workloads from day-0 through day-n. Nutanix Support & Insights. YES. Nutanix's NX-3360-G7-4208-CM is a 3 nodes with intel xeon processor 4208 (2. Check part details, parametric & specs updated 04 OCT 2023 and download pdf datasheet from datasheets. Controls and LED Indications. in the servers, network servers category. Check part details, parametric & specs updated 04 OCT 2023 and download pdf datasheet from datasheets. 0 Kudos PetrosG. com, a. com A division of BlueAlly 1225 Crescent Green, St. Nutanix's C-PWR-4FC13C14B-CM is a c13/c14 15a 4 feet power cord. in the servers, network servers category. For NG8 multi-node platforms, each CPU is associated with eight active memory channels that contain one blue slot each, plus two inactive black slots. com, a global distributor of electronics components. Nutanix DMI Information. NX-3155GN-G8-6354-CM VIEW MEMBER PRICING. Check part details, parametric & specs updated 13 AUG 2023 and download pdf datasheet from datasheets. Nutanix's NX-1175S-G8-4316-CM is a 1x intel xeon- silver 4316 processor (2. The Nutanix Cloud Platform is API-driven and provides software-defined, scale-out storage and networking with services such as Flow Virtual Networking. com, a global distributor of electronics components. com, a global distributor of electronics components. Check part details, parametric & specs updated 04 NOV 2023 and download pdf datasheet from datasheets. VIEW MEMBER PRICING. The NX-3155GN-G8 supports NVIDIA A2 and T4 GPU cards. Check part details, parametric & specs updated 03 NOV 2023 and download pdf datasheet from datasheets. Nutanix Support & InsightsThe Nutanix Hardware Platform NX-3155G-G8 Application Accelerator integrates high-performance server resources with enterprise-class storage in an appliance. nx-3155gn-g8, nx-3170n-g8, nx-8150n-g8, nx-8155n-g8, and nx-8170n-g8 Block Connection in a Customer Environment After physically installing the Nutanix block in the datacenter, you can connect the network ports to the customer's network. Error! Something went wrong. The use of a software-defined approach simplifies the infrastructure and removes the need for costly hardware segmentation solutions or more complex and static. Nutanix NX-3170N-G8 1 Node 2X Intel. nx-3155gn-g8, nx-3170n-g8, nx-8150n-g8, nx-8155n-g8, and nx-8170n-g8 Block Connection in a Customer Environment After physically installing the Nutanix block in the datacenter, you can connect the network ports to the customer's network. com, a global distributor of electronics components. Nutanix's C-GPU-M10-CM is an opt gpu nvidia m10 cm. 3 ghz/ 40- core/ 270w ice lake) per node. For CPUs with a thermal design profile equal to or less than 130 W: redundant at 110 V over the entire supported ambient temperature range of 10° C to 35° C. 6 ghz, 8 cores, cascade lake). Check part details, parametric & specs updated 10 NOV 2023 and download pdf datasheet from datasheets. Memory Configurations. com, a global distributor of electronics components. com, a global distributor of electronics. Power Supply Unit (PSU) Redundancy and Node Configuration. Check part details, parametric & specs updated 03 NOV 2023 and download pdf datasheet from datasheets. 9 GHz] €€€€€Gold 6254 [18 cores / 3. in the servers, network servers category. in the interface, interface modules category. in the servers, network servers category. Check part details, parametric & specs updated 30 OCT 2023 and download pdf datasheet from datasheets. Nutanix's NX-3155G-G7-6244-CM is a 1 node. Call a Specialist Today! 866-981-2998Nutanix's NX-8235N-G8-4310T-CM is a 2x intel xeon-silver 4310t processor (2. in the servers, network servers category. コミットメント不要。. * NXS2U1NL12G810 will cover NX-3155G-G8 and NX-3155GN-G8 models and its Options (Part numbers starting with C-), Upgrades (Part numbers starting with U-) and Spares/FRU (Part numbers starting with X-). The scalability and performance that the world’s largest, most efficient datacenters enjoy are now available to all enterprises and government agencies. in the interface, interface modules category. Memory Installation Order for Multi-Node NG8 Platforms. com, a global distributor of electronics components. Printer Accessories. com, a global distributor of electronics components. Nutanix's NX-8155-G7-6254-CM is a 1 node with intel xeon processor 6254 (3. com, a. Contact us for Pricing! Get a Quote. 4 ghz, 12 cores, cascade lake refresh. 84TB Solid State Drive from Dell. Nutanix NX-3155GN-G8 1-Node 2x Xeon Gold 6348 Application Accelerator - NX. LED Meanings for Network Cards . Only drive slots 4, 5, 7, 8, 10, and 11 can be populated. com, a global distributor of electronics. NX-3155G-G7-6226-CM VIEW MEMBER PRICING. 5 inch drive carrier. Nutanix's C-CBL-3M-SFP+-SFP+-CM is a cable 3m sfp+ to sfp+. com, a global distributor of electronics components. com, a global distributor of electronics components. 92tb 3. NX-3155GN-G8 System Specifications. So, 48/96 vCore with the HT. com, a global distributor of electronics components. Check part details, parametric & specs updated 13 AUG 2023 and download pdf datasheet from datasheets. com, a global distributor of. com, a global distributor of electronics. in the servers, network servers category. The maximum supported Twinax cable length is 5 meters, per SFP+ specifications. in the servers, network servers category. in the servers, network servers category. 12. Check part details, parametric & specs updated 14 AUG 2023 and download pdf datasheet from datasheets. Examples; DMI string Explanation Nutanix model; NX-TDT-4NL3-G8: X12 motherboard and 4 nodes with LSI3808 HBA controllers: NX-1065N-G8, NX-3060N-G8NX-8155N-G8. Nutanix NX nodes are. in the servers, network servers category. NX-3155GN-G8 GPU Specifications. Nutanix's U-MEM-64GB-32A1-CM is an upgrade, samsung 64gb memory a die 3200mhz ddr4 rdimm. com, a. Nutanix's U-NIC-10GSFP2-A-CM is an upgrade, 10gbe, 2-port, sfp+ network adapter. Check part details, parametric & specs updated 03 NOV 2023 and download pdf datasheet from datasheets. in the servers, network servers category. Check part details, parametric & specs updated 03 NOV 2023 and download pdf datasheet from datasheets. com, a global distributor of electronics components. When configuring 1 GPU, the number of add-on NIC supported is 0, 1, or 2. com, a global distributor of electronics components. Check part details, parametric & specs updated 13 AUG 2023 and download pdf datasheet from datasheets. Nutanix's U-MEM-32GB-2933-B-CM is an upgrade, samsung 32gb memory module (2933mhz ddr4 rdimm). After physically installing the Nutanix block in the datacenter, you can connect the network ports to the customer's network. Nutanix's NX-8135N-G8-6326-CM is a 2x intel xeon- gold 6326 processor (2. com Get a Quote!Nutanix's C-NIC-10GSFP2-A-CM is a 10gbe, 2-port, sfp+ network adapter. Nutanix's U-NVM-7. Nutanix's NX-8235N-G8-5317-CM is a nx-8235n-g8 2 node, 2x intel xeon- gold 5317 processor (3 ghz/ 12-core/ 150w ice lake) per node. 0 ghz, 24 cores, cascade lake refresh). com, a global distributor of. 6 ghz/ 32-core/ 250w, ice lake) per node. 2. Get the latest NX-3155GN-G8 End of Service Life (EOSL) information from Park Place Technologies, then contact us for a maintenance quote today! BREAKING NEWS: Park Place Technologies has acquired Xuper Limited, a UK-based IT Solutions Provider. Check part details, parametric & specs updated 03 NOV 2023 and download pdf datasheet from datasheets. com, a global distributor of electronics components. NX-3170N-G8, NX-8155N-G8, NX-8170N-G8 NX-3155GN-G8, NX-8150N-G8; 4: CPU1: A1, E1 (blue slots) CPU2: A1, E1 (blue slots) 32 GB, 64 GB: 32 GB, 64 GB, 128 GB: 8: CPU1: A1, C1, E1, G1 (blue slots) CPU2: A1, C1, E1, G1 (blue slots) 32 GB, 64 GB: 32 GB, 64 GB, 128 GB: 12 : CPU1: A1, B1, C1, E1, F1, G1 (blue slots) CPU2: A1, B1, C1, E1, F1, G1 (blue. Minimum Firmware and Software Versions When Using a GPU Card; Firmware or Software NVIDIA Tesla A2 NVIDIA Tesla T4 ; BIOS: WU10. 1 ghz/ 16- core/ 205w ice lake) per node. The Nutanix Virtual Computing Platform integrates high-performance server resources with enterprise-class storage in a cost-effective 2U appliance. 5TBのメモリ、14. Nutanix's NX-1175S-G7-6226-CM is a nx-1175s-g7 1 node with intel xeon processor 6226. The first two SSDs contain the Controller VM and metadata. Nutanix NX-3060N-G8 Upg 1 Nde 2X Intl. com, a global distributor of electronics components. com, a global distributor of electronics components. Server Compute: Dual Intel Ice Lake; Max Memory: 4096 GB; Max Processor Cores: 36 Cores (per CPU socket) Max Storage Capacity: 87. com, a global distributor of electronics components. Check part details, parametric & specs updated 10 NOV 2023 and download pdf datasheet from datasheets. com, a global distributor of electronics components. The NX-8150N-G8 supports solid-state drives (SSDs) and non-volatile memory express (NVMe) drives. Check part details, parametric & specs updated 04 NOV 2023 and download pdf datasheet from datasheets. Nutanix Broadcom 25/10Gbe 2Port Nic DRV. Check part details, parametric & specs updated 10 NOV 2023 and download pdf datasheet from datasheets. and learn about Nutanix software on partner appliances and other x86 platform offerings. 9 GHz/ 16-core/ 185W, Ice Lake), 24 x 128GB Memory Module (3200MHz DDR4 RDIMM), 12 x 8 TB 3. Increase the storage capacity of your Dell™ System with 3. Overview. in the servers, network servers category. Interested in learning more about how Park Place can help maximize your uptime after the OEM warranty?. T and C apply. Shop hardware. 1 ghz/ 16-core/ 205w ice lake) per node. in the power supplies, ac to dc power supplies category. in the data storage, solid state drives - ssds category. NX-3155GN-G8 GPU Specifications. 5TBのSSDストレージで構成されてい. Check part details, parametric & specs updated 04 OCT 2023 and download pdf datasheet from datasheets. Manage your purchasing and products. Check part details, parametric & specs updated 13 AUG 2023 and download pdf datasheet from datasheets. Check part details, parametric & specs updated 13 AUG 2023 and download pdf datasheet from datasheets. in the servers, network servers category. Nutanix integrates storage, backup, and disaster recovery into a single solution, reducing capital and operational expenses. Nutanix's NX-8135N-G8-5317-CM is a nx-8135n-g8 1 node, 2x intel xeon- gold 5317 processor (3 ghz/ 12-core/ 150w ice lake) per node. in the servers, network servers category. Check part details, parametric & specs updated 09 NOV 2023 and download pdf datasheet from datasheets. Nutanix's NX-3170-G8-6348-CM is a nx-3170-g8 1 node, 2x intel xeon-gold 6348 processor (2. com, a global distributor of electronics. in the servers, network servers category. 0-U-CM is an upgrade tpm 2. com, a global distributor of electronics components. Nutanix's NX-1165-G6-4114-CM is a nx-1165-g6 1 nde 4114 cm. NX-3155GN-G8 GPU Specifications. Currently viewing public documentation. 4 ghz/ 16- core/ 135w ice lake) per node. Check part details, parametric & specs updated 14 AUG 2023 and download pdf datasheet from datasheets. It is powered by two Intel® Xeon® Gold 6342 processors that offer a. com A division of Virtual Graffiti, Inc. Please login to access the full list of documentation. Nutanix does not support mixing different types of GPU cards in the same platform. Deployment Model. Simplify and streamline with a myInsight account. Nutanix's U-NODE-3060-G7-6230-CM is a hardware platform nx-3060-g7 application accelerator, upgrade. Hi, For me you haven't enougth CPU. Nutanix's U-NIC-10GSFP4-A-CM is an upgrade, 10gbe, 4-port, sfp+ network adapter. Email Print. Nutanix Xtract streamlines adoption of new IT infrastructure technology by providing infrastructure-centric and application-centric migration tools, and automating the many steps required to manually migrate or rebuild VMs and applications to new infrastructure. 2 RAID1. Server Compute: Dual Intel Ice Lake; Max Memory: 4096 GB; Max. The first drive in each node contains the CVM and metadata. Nutanix's NX-3155G-G7-6226R-CM is a 1 node with intel xeon processor 6226r (2. com, a global distributor of electronics components. Dual Intel Ice Lake: Intel Xeon Silver 4310 [12 cores / 2. Power Supply Unit (PSU) Redundancy and Node. Nutanix's NX-8235-G7-6226-CM is a nx-8235-g7 2 node with intel xeon processor 6226. in the cable assemblies, cable assembly ac power category. com, a global distributor of electronics components. com, a global distributor of electronics components. 2 Boot Device; CPU: Processor. Memory Installation Order for Multi-Node NG8 Platforms. . Block Connection in a Customer Environment. 9 ghz/ 16-core/ 185w ice lake) per node. Contact us for Pricing! Get a Quote. Contact: 1225 Crescent Green, St. A true win-win-win value proposition, easier. Nutanix's NX-8235-G7-5220-CM is a 2 node with intel xeon processor 5220 (2. I am having some trouble performing the initial configuration and wondering if I could get some support as I am stuck. nx-3155gn-g8, nx-3170n-g8, nx-8150n-g8, nx-8155n-g8, and nx-8170n-g8 Block Connection in a Customer Environment After physically installing the Nutanix block in the datacenter, you can connect the network ports to the customer's network. com, a global distributor of electronics components. com, a global distributor of electronics components. Central purchasing office. Check part details, parametric & specs updated 14 AUG 2023 and download pdf datasheet from datasheets. Regards, Lieven. 2 ghz, 10 cores, cascade lake). Check part details, parametric & specs updated 13 AUG 2023 and download pdf datasheet from datasheets. When Nutanix decides it will no longer support its storage, server, or network hardware, IT teams are left scrambling trying to figure out what they can do to deal with the problem without breaking the budget. Check part details, parametric & specs updated 03 NOV 2023 and download pdf datasheet from datasheets. 89 over 12 months with 0% interest. in the servers, network servers category. 7:NX-3155GN-G8, NX-3170N-G8, NX-8150N-G8, NX-8155N-G8, and NX-8170N-G8: Block Connection in a Customer Environment. The scalability and performance that the world’s largest. Check part details, parametric & specs updated 03 NOV 2023 and download pdf datasheet from datasheets. 2 ghz, 8 cores, cascade lake refresh). Nutanix Hardware Naming Convention. in the servers, network servers category. Nutanix's NX-3360-G7-4208-CM is a 3 nodes with intel xeon processor 4208 (2. Engineering Tools Cool. NX-3155GN-G8, NX-3170N-G8, NX-8150N-G8, NX-8155N-G8, and NX-8170N-G8: Block Connection in a Customer Environment. com, a global distributor of electronics components. Nutanix's U-NVM-7. NX-3155GN-G8 System Specifications. Please login to access the full list of documentation. NX-3155GN-G8-6354-CM VIEW MEMBER PRICING. Check part details, parametric & specs updated 03 NOV 2023 and download pdf datasheet from datasheets. com, a global distributor of electronics components. A memory channel is a group of DIMM slots. So, for example, you cannot mix 32 GB DIMMs and 64 GB DIMMs in the same node. Nutanix's NX-3360N-G8-4309Y-CM is a nx-3360n-g8 3 node, 2x intel xeon-silver 4309y processor (2. 1, 2, or 3 x Dual-port 40 GbE NIC. Check part details, parametric & specs updated 13 AUG 2023 and download pdf datasheet from datasheets. in the servers, network servers category. Super Micro NX-3460N-G8 4 NODE 2X INTELXEON GOLD 5317 PROCESSOR 3 GHZ/ 12-CORE/. 99 Availability: Mfr #: NX-3155G-G8-5315Y-CM UNSPSC #: 43211501 Item. Check part details, parametric & specs updated 09 NOV 2023 and download pdf datasheet from datasheets. 5-F-CM is a spare, 1. in the servers, network servers category. 9 ghz/ 16- core/ 185w ice lake) per node. So, for example, you cannot mix 32 GB DIMMs and 64 GB DIMMs in the same node. Nutanix's NX-3170-G8-6342-CM is a nx-3170-g8 1 node, 2x intel xeon- gold 6342 processor (2. 84TB, enabling users to store large amounts of data. com, a global distributor of electronics components. Check part details, parametric & specs updated 04 OCT 2023 and download pdf datasheet from datasheets. N8655G (1966 CESSNA 150F owned by WEASNER WILLIAM E) aircraft registration. Check part details, parametric & specs updated 04 NOV 2023 and download pdf datasheet from datasheets. Nutanix's NX-8155-G7-6242-CM is a 1 node with intel xeon processor 6242 (2. 5 drive carrier. . Check part details, parametric & specs updated 28 AUG 2023 and download pdf datasheet from datasheets. com, a global distributor of electronics components. Part: NX-3155GN-G8-5315Y-CM CDW Part: 7130307. See the benefits of our e-procurement solutions. 2 ghz, 10 cores, cascade lake). Create a myInsight account. Check part details, parametric & specs updated 14 AUG 2023 and download pdf datasheet from datasheets. NX-8150N-G8: 1: NO: YES: NX-8155N-G8: 1: For CPUs with a thermal design profile equal to or less than 130 W: redundant at 110 V over the entire supported ambient temperature range of 10° C to 35° C. 5 inch drive carrier. Check part details, parametric & specs updated 03 NOV 2023 and download pdf datasheet from datasheets. Contact us for Pricing! Get a Quote. Check part details, parametric & specs updated 03 NOV 2023 and download pdf datasheet from datasheets. Memory Configurations. 1 ghz, 8 cores, cascade lake. Quantity: 1. Nutanix's NX-3170-G7-6226-CM is a nx-3170-g7 1 node with intel xeon processor 6226. Nutanix NX nodes are purpose-built SuperMicro appliances with configuration options for all hyperconverged infrastructure (HCI) use cases. Nutanix NX nodes are purpose-built SuperMicro appliances with configuration options for all hyperconverged infrastructure (HCI) use cases. Nutanix's C-NIC-25GSFP2-A-CM is a 25gbe, 2-port, sfp28 network adapter. Check part details, parametric & specs updated 10 NOV 2023 and download pdf datasheet from datasheets. in the servers, network servers category. X-Ray is an automated testing framework and benchmarking solution that offers comprehensive 360° assessments of major hyperconverged infrastructure solutions. Check part details, parametric & specs updated 09 NOV 2023 and download pdf datasheet from datasheets. 5 ghz, 20 cores, cascade lake). For all other CPUs, use the following rule: Ambient temperature is 25° C or less: YES; Ambient temperature is greater than 25° C: NO; YES: NX. 2ghz, 18 cores, cascade lake). 5 inch hdd. Platforms include industry standard x86 server models on which Nutanix software can be installed. The world’s most advanced enterprise datacenters rely on the Nutanix Xtreme Computing Platform to run their mission-critical workloads. Check part details, parametric & specs updated 09 NOV 2023 and download pdf datasheet from datasheets. 9 ghz, 16 cores, cascade lake refresh). Nutanix software has been designed to integrate with hardware platform configurations produced or certified by Nutanix and OEM partners. Find your next car by browsing our. Nutanix's NX-3460-G7-4210-CM is a 4 nodes with intel xeon processor 4210 (2. in the tools and supplies, misc products category. com, a global distributor of electronics components. com, a global distributor of electronics components. 9 ghz/ 16-core/ 185w ice lake) per node. Check part details, parametric & specs and download pdf datasheet from datasheets. Nutanix DMI Information. 5 is a 2tb 2. We initially started with 3 nodes, later on added another node and two years ag. Data Protection & High Availability. nx-3155gn-g8, nx-3170n-g8, nx-8150n-g8, nx-8155n-g8, and nx-8170n-g8 Block Connection in a Customer Environment After physically installing the Nutanix block in the datacenter, you can connect the network ports to the customer's network. Check part details, parametric & specs updated 10 NOV 2023 and download pdf datasheet from datasheets. Yoshimotto, Thank you for your feedback and questions: 1. Nutanix's NX-8170-G7-6248R-CM is a nx-8170-g7 1 node with intel xeon processor 6248r (3. The two rightmost drive slots can contain either SSDs or NVMe drives. Check part details, parametric & specs updated 04 NOV 2023 and download pdf datasheet from datasheets. 7 ghz, 12 cores, cascade lake). Check part details, parametric & specs updated 09 NOV 2023 and download pdf datasheet from datasheets. in the power supplies, ac to dc power supplies category. Get the latest NX-3155GN-G8 End of Service Life (EOSL) information from Park Place Technologies, then contact us for a maintenance quote today! BREAKING NEWS:. Check part details, parametric & specs updated 04 NOV 2023 and download pdf datasheet from datasheets. com, a global distributor of electronics components. Check part details, parametric & specs updated 04 OCT 2023 and download pdf datasheet from datasheets. 5. Please login to access the full list of documentation. Server Compute**. Check part details, parametric & specs updated 30 OCT 2023 and download pdf datasheet from datasheets. View specs for Nutanix appliances, including hardware platforms. 4 ghz, 12 cores, cascade lake refresh). in the memory cards and modules, memory modules category. . com, a global distributor of electronics. Nutanix's NX-3155G-G7-6244-CM is a 1 node with intel xeon processor 6244 (3. com, a global distributor of electronics components. Check part details, parametric & specs updated 10 NOV 2023 and download pdf datasheet from datasheets. in the servers, network servers category. 84TB-A5-A-CM is an upgrade, 3. 84tb 3. Nutanix's U-NIC-25G-2-B-CM is an upgrade option, 25gb, 2 port, sfp 28 network adapter. 4 GHz/ 36-core) 256 GB RAM; NVIDIA A16 GPU; This config should allow us to run +/- 140 concurrent VDI sessions without any problem with some room for growth. Currently viewing public documentation. Nutanix simplifies datacenter infrastructure by integrating server and storage resources into a turnkey appliance that is deployed in just 30 to 60 minutes, and runs any application at any scale. A memory channel is a group of DIMM slots. com, a global distributor of electronics components. NX-3170-G6 : 05 / 30 / 2025 : Request a Quote . com, a global distributor of electronics components. Nutanix's NX-3160-G6-6126-CM is a nx-3160-g6 1 nde 6126 cm. Nutanix's NX-1175S-G7-4210-CM is a nx-1175s-g7 1 node with intel xeon processor 4210. in the servers, network servers category. LED Meanings for Network Cards . 1 ghz, 20 cores, cascade lake). com, a global distributor of electronics components. in the data storage, solid state drives - ssds category. Block Connection in a Customer Environment. Nutanix NX-8170-G8 1Node 2X Intelxeon. 1. They are used to make drawings with Microsoft Visio to document and design Nutanix environments. Nutanix's U-NODE-1065-G7-4208-CM is a nx 1065 g7 upgrade, 1 node with xeon processor 4208 2. 5 vCore / Host Your hosts have 24 Cores & the recommandation for VDI is 1 or 2 vCore / pCore. The NX-3170-G8 has twelve drive slots. Nutanix's C-SSD-1920GB-3. com, a global distributor of electronics components. com, a global distributor of electronics components. Ambient temperature is greater than 25° C: NO.