IBM FlashSystem 5600 Specifications and Technical Overview
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IBM FlashSystem 5600 is a compact 1U all-flash system built for companies that need high performance without moving to high-end systems like the FlashSystem 7600.
IBM FlashSystem - Immediate Availability
Limited stock at special pricing
System Overview - IBM FlashSystem 5600
Item | Specification |
Form factor | 1U control enclosure |
Machine type | 5127-A20 |
Controllers | 2 node canisters |
Controller mode | Active-active |
PCIe generation | PCIe Gen 4 |
Base NVMe slots | 12 |
Software | IBM Storage Virtualize 9.1.2+ |
Maximum system performance:
Metric | Value |
Max IOPS (4K read-hit) | 2.6 million |
Max read bandwidth | 30 GB/s |
Read latency | < 50 microseconds |
Hardware Architecture - IBM FlashSystem 5600
FlashSystem 5600 uses a dual-controller design in a single 1U chassis.
Each node canister includes:
CPU
system memory
I/O adapters
battery backup
management networking
Both controllers operate simultaneously in active-active mode. If one controller fails, volumes remain online through the surviving node.
Chassis Components - IBM FlashSystem 5600
Component | Details |
Control enclosure | 1U |
NVMe slots | 12 front EDSFF slots |
Node canisters | 2 |
Power supplies | 2 redundant |
Batteries | 1 per node canister |
AC input | 120V or 240V |
Memory affects system scale limits -> higher memory configurations support:
larger metadata tables
more snapshots
higher host counts
heavier replication workloads
Flash Media and Storage Options - IBM FlashSystem 5600
The base system uses NVMe flash drives.
Supported media types:
Media | Supported |
IBM FlashCore Modules | Yes |
Standard NVMe SSD | Yes |
Drive format | EDSFF |
FlashCore Module capacities supported by the platform:
Capacity | Module type |
6.6 TB | FCM |
13.2 TB | FCM |
26.4 TB | FCM |
52.8 TB | FCM |
FlashCore Modules provide:
hardware compression
telemetry monitoring
ransomware detection
Capacity Limits - IBM FlashSystem 5600
Capacity Type | Value |
Raw maximum | 633 TB |
Usable capacity figure | ~400 TB |
Effective capacity | 2.4 PBe |
FlashSystem grid maximum | 77 PBe |
Effective capacity assumes data reduction -> real usable capacity depends on:
compression ratio
workload characteristics
RAID overhead
Host Connectivity - IBM FlashSystem 5600
FlashSystem 5600 supports multiple SAN and Ethernet protocols.
Supported host protocols:
Fibre Channel
FC-NVMe
iSCSI
NVMe/TCP
Adapter Options - IBM FlashSystem 5600
Adapter | Ports | Protocol |
64 Gb FC | 2 | FC + NVMe-FC |
32 Gb FC | 4 | FC + NVMe-FC |
25 Gb Ethernet | 4 | iSCSI / NVMe-TCP |
100 Gb Ethernet | 2 | iSCSI / NVMe-TCP |
12 Gb SAS | 2 | Expansion only |
System limits:
Metric | Limit |
Max I/O ports | 16 |
Max FC ports | 16 |
Max Ethernet ports | 20 (including onboard) |
Expansion Options - IBM FlashSystem 5600
The base system is NVMe flash. Capacity can be expanded with SAS expansion shelves.
Supported expansion enclosures:
Model | Description |
4662-12G | 2U12 SAS enclosure |
4662-92G | 5U92 high-density enclosure |
Supported HDD Capacities (SAS Expansion Shelves Only):
Drive | Capacity |
NL-SAS HDD | 12 TB |
NL-SAS HDD | 16 TB |
NL-SAS HDD | 20 TB |
NL-SAS HDD | 24 TB |
SAS expansion rules:
two independent SAS chains
maximum 12U per chain
mix of 2U and 5U enclosures allowed
IBM FlashSystem Expansion Shelves
Data Reduction and Security - IBM FlashSystem 5600
FlashSystem 5600 uses FlashCore hardware acceleration.
Current data services:
Feature | Status |
Hardware compression | Enabled |
Deduplication | Scan-only on FCM5 |
Encryption | Supported |
Threat detection | Built into FlashCore |
IBM’s Storage Virtualize stack also provides:
immutable snapshots
Safeguarded Copy
replication
ransomware monitoring
Storage Virtualize Software - IBM FlashSystem 5600
FlashSystem 5600 runs IBM Storage Virtualize.
Core capabilities:
logical volume management
thin provisioning
snapshots
replication
distributed RAID
storage pooling
automation APIs
Automation support:
REST API
Ansible
VMware integration
CSI driver for Kubernetes
Protocol and Platform Compatibility - IBM FlashSystem 5600
Supported storage protocols:
Protocol | Supported |
Fibre Channel | Yes |
NVMe-FC | Yes |
iSCSI | Yes |
NVMe-TCP | Yes |
Host compatibility must be verified against IBM interoperability matrices.
Typical supported environments include:
VMware vSphere
Linux
Windows Server
Kubernetes platforms
Performance Characteristics - IBM FlashSystem 5600
Metric | Value |
Max IOPS | 2.6M |
Bandwidth | 30 GB/s |
Read latency | <50 μs |
Performance depends on:
host protocol
queue depth
block size
workload mix
RAID configuration
Typical Deployment Scenarios - IBM FlashSystem 5600
FlashSystem 5600 is commonly used for:
VMware clusters
container platforms
SQL / Oracle databases
virtual desktop infrastructure
edge data centers
The 1U footprint allows high performance in limited rack space.
Key Technical Considerations - IBM FlashSystem 5600
Effective vs Raw Capacity
The system’s 2.4 PBe figure assumes high data reduction.
Design storage using:
raw capacity
expected compression ratio
RAID overhead.
Deduplication Status
In the current software release:
FlashCore compression is active.
Deduplication operates in scan-only mode.
Future software releases are expected to enable active dedupe.
Memory Configuration - IBM FlashSystem 5600
The 512 GB configuration is recommended when using:
large snapshot counts
heavy replication
dense virtualization clusters.
IBM FlashSystem 5600 is a midrange NVMe all-flash system positioned between the 5300 and 7600, offering strong performance in a compact 1U form factor, with the flexibility to scale and expand beyond pure flash when needed.
IBM FlashSystem - Immediate Availability
Limited stock at special pricing
Frequently Asked Questions - IBM FlashSystem 5600
Does IBM FlashSystem 5600 support NVMe?
Yes. FlashSystem 5600 uses end-to-end NVMe architecture. It supports NVMe over TCP (NVMe/TCP) and NVMe over Fibre Channel (NVMe-FC).
Does FlashSystem 5600 support data reduction?
Yes, with limitations:
Hardware compression is enabled
Deduplication is currently scan-only (FCM5 with Storage Virtualize 9.1.2)
Is FlashSystem 5600 suitable for VMware and Kubernetes?
Yes. It supports VMware integration, CSI drivers for Kubernetes and containerized workloads.
Does FlashSystem 5600 support high availability?
Yes. It includes dual active-active controllers, redundant power supplies and non-disruptive operations.
What is FlashCore Module (FCM)?
FlashCore Module is IBM’s proprietary NVMe storage media. It provides hardware compression, telemetry monitoring, ransomware detection and high endurance and performance.
Sources - IBM FlashSystem 5600
IBM FlashSystem 5600 Product Page
https://www.ibm.com/products/flashsystem-5600
IBM FlashSystem Family Overview (Specifications & Comparison)
https://www.ibm.com/products/flashsystem
IBM FlashSystem 5000 Series Documentation (5600 Hardware Guide)
https://www.ibm.com/docs/en/flashsystem-5x00
IBM FlashSystem 5600 System Overview (Detailed Hardware)
https://www.ibm.com/docs/en/flashsystem-5x00/9.1.2?topic=5600-system-overview
IBM FlashSystem 5600 Expansion Enclosures
https://www.ibm.com/docs/en/flashsystem-5x00/9.1.2?topic=5600-expansion-enclosures
IBM FlashSystem Resources and Comparison Tables
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