Citrix Sizer by Niyyasoft

Citrix Virtual Apps on multi-session VDAs, pooled and persistent Virtual Desktops, and GPU desktops (vGPU or pass-through), each with its own users, concurrency, workload mix, images, profile and data storage, logon behaviour and HDX bandwidth.

Compute from the Citrix VDI Handbook: users per physical core with the antivirus, monitoring, Office and hyper-threading density factors, or an explicit vCPU-to-core ratio, then sessions per VDA limited by CPU, memory and load management, with NUMA checks.

Citrix infrastructure from Citrix’s published guidance: Delivery Controllers, StoreFront, Director, License Server, SQL Server databases and high availability, NetScaler, FAS, WEM, Session Recording, Citrix Provisioning and Cloud Connectors.

Platform sizing for Nutanix AHV, VMware vSAN ESA and OSA, Azure Local, or three-tier vSphere, Hyper-V, XenServer and AHV on FC, iSCSI, NFS or SMB storage: CPU, memory and DIMMs, capacity after RAID, replication or erasure coding, IOPS with boot and logon storms, N+1 or N+2, and cluster limits.

A separate MDM module sized from each product’s own documentation: Citrix Endpoint Management, Omnissa Workspace ONE UEM, Microsoft Intune and Ivanti EPMM.

Every value is classified — official, customer, assumption, calculated or needs validation — and every calculation step shows its formula, substituted values and rounding, backed by a knowledge base of 417 sizing rules and 415 port rules, each with its official source, section and verification date.

Conservative, balanced and performance scenarios side by side, growth over the planning horizon, utilisation after host failures, a disaster-recovery estimate and a vendor-neutral bill of materials with no invented models or part numbers.

Logical architecture, physical connectivity and network-zone diagrams with zoom, pan, SVG and PNG export and editable source. No design data is sent to an outside diagram service.

A firewall port matrix with only the flows your design needs — hypervisor, HCI platform, storage protocol, server vendor, Provisioning, FAS, WEM, Gateway and MDM — plus a security-zone matrix and CSV and Excel exports for the firewall team.

Projects with immutable versions, side-by-side version comparison and an audit trail; a Word report, an editable PowerPoint deck and an Excel workbook with live formulas, all from the same saved version so the numbers always agree.

Use it as a guest to size a design and see the results; sign in with your niyyasoft.com account to save projects and download reports and diagrams.