PowerFlex: Product Limits and System Requirements

Shrnutí: This article describes the PowerFlex product limits, and the system requirements for components for each consumption model. The product limits summarize the supported capabilities and system limits. Maximum and minimum values for key system components are dictated by the product limits. ...

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Note: The supported limits described might differ from system enforced limits in the list output of the scli --query_system_limits command.

PowerFlex 3.X : Getting To Know Dell EMC PowerFlex 3.5

PowerFlex 4.X: Dell PowerFlex 4.5.x and PowerFlex Manager 4.8.x Technical Overview 

PowerFlex 5.1: Dell PowerFlex 5.1.x and PowerFlex Manager 5.1.x Technical Overview

 

Example from PowerFlex 5.1 Documentation

Table 1. Supported capabilities and system limits
PowerFlex capability PowerFlex software limits PowerFlex appliance and PowerFlex rack limits
Device size Minimum: 480 GB

Maximum: 16 TB

 Minimum: 3.84 TB

Maximum: 16 TB
Maximum acceleration devices of type SDPM or NVDIMM (maximum that is supported in a PowerFlex node) PowerEdge R840/R740xd/R640 nodes:
  • NVDIMM: 6

PowerEdge R750/R650 nodes:

  • NVDIMM: 8

PowerEdge R760/R660 nodes:

  • SDPM: 2
 PowerEdge R840/R740xd/R640 nodes:
  • NVDIMM: 6

PowerEdge R750/R650 nodes:

  • NVDIMM: 8

PowerEdge R760/R660 nodes:

  • SDPM: 2
Maximum data networks for MDM virtual IPs 4 4
Maximum data networks per system 8 4
Maximum device groups per protection domain 1 storage device group + 1 PMEM device group 1 storage device group + 1 PMEM device group
Maximum devices per protection domain 4096 768
Maximum erasure coding compression ratio 10x the system's raw capacity. The system is defined as all storage devices in the protection domains. 10x the system's raw capacity. The system is defined as all storage devices in the protection domains.
Maximum hosts (SDC or NVMe) per system SDC: 2,048

NVMe: 1,024 + 1,024 SDCs

 Managed hosts: 768 (SDC or NVMe or both, on either storage nodes or compute-only nodes)

Unmanaged hosts: 2,048
Maximum logical capacity per system 4 EB (Base 2) 4 EB (Base 2)
Maximum managed PowerFlex nodes per system N/A 400
Maximum number of concurrent logged-in management clients (PowerFlex Manager, REST API, and SCLI) 128 128
Maximum number of configured syslog servers 16 16
Maximum number of snapshots in a single volume family 1022 1022
Maximum number of snapshots per snapshot policy 1022 1022
Maximum number of volumes-to-SDC or NVMe host mappings per system SDC: 262,143

NVMe: 32,000

 SDC: 262,143

NVMe: 32,000
Maximum persistent memory (PMEM) devices per storage node NVDIMM: 2

SDPM: 2

 NVDIMM: 2

SDPM: 2
Maximum PowerFlex nodes per resource group N/A 32
Maximum protection domains per system 8 8
Maximum raw capacity per protection domain 16 PB 16 PB
Maximum raw capacity per storage node 307 TB 307 TB
Maximum snapshot policies per system 1000 1000
Maximum storage devices (drives) per storage node 32 32
Maximum storage nodes per system 128 128

The total number of storage-only and compute-only managed nodes cannot exceed 400.
Maximum system raw capacity 8+2: 16 PB

4+2: 4 PB

2+2: 4 PB

 8+2: 16 PB

4+2: 4 PB

2+2: 4 PB
Maximum total number of volumes and snapshots in the system. Can be a single protection domain or storage pool. 128,000 128,000
Maximum total number of volumes and snapshots in a protection domain 32,768 32,768
Maximum user accounts 256 256
Maximum volumes that can be mapped concurrently using the REST API (PowerFlex Manager, REST API, and SCLI) 1024 1024
Maximum volumes that can be mapped to a single SDC 1024 1024
Minimum capacity per node 1.6 TB 1.6 TB x 5 (8 TB)
Minimum devices per node 1 5
Minimum number of storage nodes in a protection domain 8+2: 11 storage nodes

4+2: 7 storage nodes

2+2: 5 storage nodes

 8+2: 11 storage nodes

4+2: 7 storage nodes

2+2: 5 storage nodes
Minimum storage pool/device group size 1.6 TB x number of storage nodes in the protection domain 5 disks x 1.92 TB x minimum node count
Number of storage pools per protection domain 1 1
System over-provisioning factor 100x size of the storage pool 100x size of the storage pool
SCSI-3 reservation type Write exclusive registrants only Write exclusive registrants only
Total size of all volumes per storage pool 4 EB (Base 2) 4 EB (Base 2)
Volume size Minimum 1 GB

Maximum 8 PB (Base 2)

 Minimum 1 GB

Maximum 8 PB (Base 2)
Table 2. NVMe over TCP limits
PowerFlex item Limit
Maximum SDTs per system 512
Maximum SDTs per protection domain 128
Minimum SDTs per protection domain 2
Maximum number of NVMe hosts created in PowerFlex 1024
Maximum NVMe host connections (I/O controllers) per SDT 512
Maximum NVMe host connections (I/O controllers) per system 65,519
Maximum I/O controller queue depth 128
Maximum I/O controller queues 32
Number of volumes mapped to a single NVMe host 1024
Maximum number of paths per volume 8
Maximum number of connections per NVMe host per protection domain 128
Table 3. PowerFlex management platform limits
Capability Limit
Maximum number of configured users 256
Maximum number of LDAP users 256
Maximum number of LDAP servers 3
Maximum number of DNS servers 3
Maximum number of time sources 3
Maximum number of Syslog servers 3
Maximum number of SMTP servers 3
Maximum number of vCenters 6

 

Dotčené produkty

PowerFlex rack, ScaleIO
Vlastnosti článku
Číslo článku: 000502506
Typ článku: How To
Poslední úprava: 25 srp 2026
Verze:  1
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