Model Number: FS9500-4666-AH8
Call for Price: (888) 682-5335

IBM FlashSystem 9500 FS9500 4666-AH8 NVMe Storage System

The IBM FlashSystem 9500 4666-AH8 is a 4U enterprise NVMe storage system for demanding databases, virtualization and business-critical applications. The IBM FlashSystem 9500 4666-AH8 control enclosure combines 48 NVMe drive slots, two node canisters and IBM Storage Virtualize data services. The IBM FS9500 family includes the 4666-AH8 and 4983-AH8 IBM FlashSystem 9500 models.

Contact Midland Information Systems at (888) 682-5335 for a configured IBM FlashSystem 9500 quote, upgrade or replacement part pricing. All IBM FlashSystems, features and parts include warranty, support and eligible for IBM Maintenance and Support.

IBM FlashSystem 9500 Performance Specifications

Performance measurePer control enclosure
Maximum IOPS, 4K read hit 8 million IOPS
Maximum IOPS, 4K read miss 2.5 million IOPS
Minimum latency, 4K read hit Less than 50 microseconds
Maximum bandwidth, 256 KB read miss 100 GB/s


IBM FlashSystem 9500 FS9500 Performance Specifications

ConfigurationMaximum IOPSMaximum bandwidth
Single control enclosure 6.3 million 65 GB/s
Two-enclosure cluster 12.6 million 130 GB/s

IBM FS9500 Controller, Memory and Internal Capacity

SpecificationOne control enclosureTwo control enclosures
Rack space, excluding expansion 4U 8U
Node canisters 2 4
Processors Four 24-core processors Eight 24-core processors
Processor cores 96 192
Maximum memory 3,072 GB 6,144 GB
Internal NVMe slots 48 96
Nominal capacity with 38.4 TB modules 1,843.2 TB 3,686.4 TB

IBM FS9500 FlashCore Module Options

CapacityFCM3 feature and Part NumbersFCM4 feature and Party Numbers
4.8 TB AHS9 03JK076 03JK162 03GH935 03GH936 03JK687 AHSE 03NK832 03JK992 03LG000 03LG009
9.6 TB AHSA03JK077 03JK163 03JL077 03JK693 03GH933 03JK077 03LG627 AHSF 03NK831 03LG001 03LG002 03JN354 03LG014
19.2 TB AHSB 03JK078 03GH931 03GH932 03JK160 03JK164 03JK699 AHSG 03NK830 03LG010 03LG015
38.4 TB AHSC 03JK079 03JK165 AHSH 03JN350 03LG019 03LG015 03LG003 03LG016

FCM4 is a later option requiring compatible software. Its computational-storage functions depend on the array configuration.

Standard NVMe and SAS Drives

Drive locationSupported capacity options
Control enclosure, standard NVMe SSD 1.92, 3.84, 7.68, 15.36 and 30.72 TB
Control enclosure, Storage Class Memory 1.6 TB
SAS expansion enclosure, SSD 1.92, 3.84, 7.68, 15.36 and 30.72 TB

FlashCore Modules occupy control-enclosure NVMe slots and are not installed in SAS expansions.

Connectivity Options and Maximums

InterfaceFeatureMaximum ports per enclosure
32 Gb Fibre Channel AHBB 48
64 Gb Fibre Channel AHBK 24
100 Gb Ethernet RoCE AHB8 12
10/25 Gb Ethernet RoCE AHBH 20
10/25 Gb Ethernet iWARP AHBJ 20
12 Gb SAS expansion attachment AHBA Configuration dependent

Two-enclosure port maximums are twice the corresponding enclosure figures. These are independent maximums: adapter types share slots and cannot all reach their maxima together. Confirm optics, cabling, host protocols and software support.

Expansion and Total Drive Maximums

SpecificationStorage Virtualize 8.6.0.x limit
SAS chains per control enclosure 2
Expansion enclosures per chain Three 2U enclosures or one 5U92
Expansion enclosures per control enclosure 6
Expansion enclosures per two-enclosure system 12
Total drives per I/O group 232
Total drives per system 464
NVMe drives per system 96
SCM drives per I/O group 12

Enclosure and drive limits apply independently. Twelve expansions does not mean twelve fully populated 92-drive enclosures.

Snapshots and FlashCopy Limits

FunctionStorage Virtualize 8.6.0.x maximum
Snapshots per system 64,999, subject to volume count
FlashCopy mappings per system 15,864
FlashCopy targets per source 256
FlashCopy consistency groups 500
Mappings per consistency group 512
Snapshot policies 32
Safeguarded policies 32

The snapshot ceiling assumes one basic volume; additional volume copies reduce it. Memory, capacity allowances and software release impose further constraints.

Configuration, Licensing and Upgrade Review

The 4666-AH8 uses separately licensed Storage Virtualize software. Verify entitlement rather than assuming the licensing arrangement of the later 4983-AH8 applies.

Before requesting a quote, gather:

  • Machine type, model and serial number.

  • Installed software version and licensed functions.

  • Drive feature codes, part numbers and available slots.

  • Host adapters, switches, optics and cables.

  • Required usable capacity and expected growth.

  • Workload IOPS, bandwidth and response-time requirements.

  • Snapshot retention, replication and recovery requirements.

Call (888) 682-5335 to review a 4666-AH8 configuration, capacity upgrade or replacement component with Midland Information Systems.

the IBM FlashSystem 9500 email price feature if you have general IBM FlashCore module compatibility questions for your IBM FS9500. All IBM Flash Storage, IBM FlashSystems, features and parts include warranty, support and are eligible for IBM maintenance. Download or view the IBM FS9500 Datasheet here.