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  FAS2554   FAS2552   FAS2520  
SPECIFICATIONS FOR SCALE-OUT CONFIGURATIONS (HYBRID AND DISK-ONLY CONFIGURATIONS)
NAS/SAN Scaling 1–8 nodes (4 HA pairs) 1–8 nodes (4 HA pairs) 1–4 nodes (2 HA pairs)
Maximum Drives 576 576 168
Maximum Raw Capacity 4.6PB 4.2PB 1.3PB
Maximum Flash Pool 64TB 64TB 32TB

Maximum Memory

144GB 144GB 72GB
Cluster Interconnect 10GbE 10GbE 10G Base-T
Storage Protocols Supported FAS2552/FAS2554 = FC; FCoE; iSCSI; NFS; pNFS; CIFS/SMB 
FAS2520 = iSCSI; NFS; pNFS; CIFS/SMB 
OS Version ONTAP® 8.2.2 or later
High-Availability Features Alternate Control Path (ACP); Ethernet-based service processor and ONTAP management interface; redundant hot-swappable controllers, cooling fans, and power supplies
Supported Configurations Hardware Cluster Configurations
Single-node cluster
Two-node switchless cluster
Two-node switched cluster
Clusters of HA pairs
Back-End Disks: Single path with single controller or HA pair; dual path with single controller MP-HA with HA pair (best practice)
Consult the Interoperability Matrix Tool for FAS2500 support on earlier versions of ONTAP software.
Disk Shelves Supported DS2246 (2U; 24 drives, 2.5" SFF) 
DS4246 (4U; 24 drives, 3.5" LFF) 
For complete details on expansion disk shelves and supported media in those shelves, see the NetApp Disk Shelves and Storage Media web page.
Maximum RAID Group Sizes RAID-TEC™ (triple parity, ONTAP 9)
SSDs and Performance HDDs: 29 (26 data disks plus 3 parity disks)
Capacity HDDs: 21 (18 data disks plus 3 parity disks)
RAID 6 (RAID-DP®)
SSDs and Performance HDDs: 28 (26 data disks plus 2 parity disks)
Capacity HDDs: 20 (18 data disks plus 2 parity disks)
RAID 4
SSDs and Performance HDDs: 14 (13 data disks plus 1 parity disk)
Capacity HDDs: 7 (6 data disks plus 1 parity disk)
RAID 6 + RAID 1 or RAID 4 + RAID 1 (SyncMirror®)
Host/Client Operating Systems Supported Windows® 2000, Windows Server® 2003, Windows Server 2008, Windows Server 2012, Windows XP, Linux®, Oracle® Solaris, AIX, HP-UX, Mac® OS, VMware®, ESX
Max. Number of LUNs 2048 per controller
Number of Supported Hosts Up to 6 ports per controller configured as front-end (host) connectivity ports
Up to 12 directly connected servers per active-active configuration
Connected hosts per HA pair: Up to 512 SAN connected servers
FlexVol Volumes Up to 1,000 per controller
Snapshot® Copies Up to 255,000 per controller
Maximum Volume Size 60TB
Maximum Aggregate Size 120TB

 

  FAS2554 FAS2552 FAS2520
PER CONTROLLER AND PER HA PAIR SPECIFICATIONS
  Single Controller Dual Controller Single Controller Dual Controller Single Controller Dual Controller
Max. Raw Capacity 1152TB 1152TB 1052TB 1052TB 672TB 672TB
Internal Drives 24 24 24 24 12 12
Supported Internal Drives
Performance HDD N/A 600GB, 900GB, 1.2TB 600GB, 900GB, 1.2TB

Capacity HDD

2TB, 3TB, 4TB,6TB,8TB N/A 2TB, 3TB, 4TB,6TB,8TB
SSD 200GB, 400GB, 800GB 200GB, 400GB, 800GB, 1.6TB, 3.84TB 200GB, 400GB, 800GB, 1.6TB, 3.84TB
Self-encrypting Drives 4TB at 7.2K RPM AES-256, FIPS 140-2 compliant 900GB at 10K RPM, 800GB SSD AES-256, FIPS 140-2 compliant 900GB at 10KRPM, 4TB at 7.2K RPM AES-256, FIPS 140-2 compliant
Max. Drives (Internal + External) 144 144 144 144 84 84
ECC Memory 18GB 36GB 18GB 36GB 18GB 36GB
Controller Form Factor 1 or 2 controllers in a single 4U chassis 1 or 2 controllers in a single 2U chassis 1 or 2 controllers in a single 2U chassis
Maximum Flash Pool 16TB[1] 16TB[1] 16TB[1] 16TB[1] 16TB[1] 16TB[1]
NVMEM/NVRAM 2GB 4GB 2GB 4GB 2GB 4GB
Onboard I/O: UTA 2 (8Gb FC/16Gb FC/FCoE/10GbE/1GbE[2]) 4 [3] 8 [3] 4 [3] 8 [3] N/A N/A
Onboard I/O:  N/A N/A N/A N/A 4 [4] 8 [4]
10G Base-T
Onboard I/O: 6Gb SAS 2 4 2 4 2 4
Onboard I/O: GbE 2 4 2 4 2 4