# Hitachi Adaptable Modular Storage 2000

**Section:** Hitachi Adaptable Modular Storage Physical Characteristics

| - | AMS 2100 | AMS 2300 | AMS 2500 | AMS 2500DC |
|---|---|---|---|---|
| Raw capacity | SATA - 469TB SAS - 78TB | SATA - 708TB SAS - 138TB | SATA - 1,417TB SAS - 276TB | SATA - 472TB SAS - 210TB |
| Internal disk drives (min-max) | SAS 146GB (15K RPM) 300GB (10K RPM) 300GB (15K RPM) 400GB (10K RPM) 450GB (15K RPM) 600GB (10K RPM) 600GB (15K RPM) 600GB (15K RPM, self-encrypting) 2TB (7200 RPM) SATA II 500GB (7200 RPM) 1TB (7200 RPM) 2TB (7200 RPM) 3TB (7200 RPM) Internal flash drives 200GB (SAS) | SAS 146GB (15K RPM) 300GB (10K RPM) 300GB (15K RPM) 400GB (10K RPM) 450GB (15K RPM) 600GB (10K RPM) 600GB (15K RPM) 600GB (15K RPM, self-encrypting) 2TB (7200 RPM) SATA II 500GB (7200 RPM) 1TB (7200 RPM) 2TB (7200 RPM) 3TB (7200 RPM) Internal flash drives 200GB (SAS) | SAS 146GB (15K RPM) 300GB (10K RPM) 300GB (15K RPM) 400GB (10K RPM) 450GB (15K RPM) 600GB (10K RPM) 600GB (15K RPM) 600GB (15K RPM, self-encrypting) 2TB (7200 RPM) SATA II 500GB (7200 RPM) 1TB (7200 RPM) 2TB (7200 RPM) 3TB (7200 RPM) Internal flash drives 200GB (SAS) | SAS 300GB (15K RPM) 450GB (15K RPM) SATA II 1TB (7200 RPM) |
| Internal disk drives (min-max) | Min-Max # of drives SAS: 4-136 SATA: 4-159 Internal Flash drives: 0-30 | Min-Max # of drives SAS & SATA: 4-240 Internal Flash drives: 0-30 | Min-Max # of drives SAS & SATA: 4-480 Internal Flash drives: 0-60 | Min-Max # of drives SAS & SATA: 4-480 Internal Flash drives: 30 |
| Host interfaces | Fibre Channel: 8Gbit/s iSCSI: GigE, 10GbE | Fibre Channel: 8Gbit/s iSCSI: GigE, 10GbE | Fibre Channel: 8Gbit/s iSCSI: GigE, 10GbE | Fibre Channel: 4Gbit/s iSCSI: GigE, 10GbE |
| Host connection options | Fibre Channel: 4 Fibre Channel: 8 Fibre Channel: 4 and iSCSI: 4 | Fibre Channel: 4 Fibre Channel: 8 Fibre Channel: 8 and iSCSI: 4 | Fibre Channel: 16 iSCSI: 8 Fibre Channel: 8 and iSCSI: 4 | Fibre Channel: 16 iSCSI: 8 Fibre Channel: 8 and iSCSI: 4 |
| Maximum attached hosts through virtual ports | 1024 | 2048 | 2048 | 2048 |
| SAS links | 16 | 16 | 32 | 32 |
| LUNs | Max size: 60TB | Max size: 60TB | Max size: 60TB | Max size: 60TB |
| LUNs | Max #: 2048 | Max #: 4096 | Max #: 4096 | Max #: 4096 |
| RAID Support | RAID-0 (SAS drives only) RAID-1 RAID-1+0 RAID-5 RAID-6 | RAID-0 (SAS drives only) RAID-1 RAID-1+0 RAID-5 RAID-6 | RAID-0 (SAS drives only) RAID-1 RAID-1+0 RAID-5 RAID-6 | RAID-0 (SAS drives only) RAID-1 RAID-1+0 RAID-5 RAID-6 |
| RAID Support | Max RAID groups: 50 | Max RAID groups: 75 | Max RAID groups: 100 | Max RAID groups: 100 |
| Availability | Nondisruptive replacement of major FRU components Nondisruptive hot-pluggable disks Nondisruptive microcode updates Hi-Track Remote Monitoring system | Nondisruptive replacement of major FRU components Nondisruptive hot-pluggable disks Nondisruptive microcode updates Hi-Track Remote Monitoring system | Nondisruptive replacement of major FRU components Nondisruptive hot-pluggable disks Nondisruptive microcode updates Hi-Track Remote Monitoring system | Nondisruptive replacement of major FRU components Nondisruptive hot-pluggable disks Nondisruptive microcode updates Hi-Track Remote Monitoring system |
| Performance | Controller cache: 4GB–8GB (per system) | Controller cache: 8GB–16GB (per system) | Controller cache: 16GB–32GB (per system) | Controller cache: 16GB–32GB (per system) |
| Performance | Cache binding: Hitachi Cache Residency Manager feature Logical partitioning: Hitachi Cache Partition Manager feature | Cache binding: Hitachi Cache Residency Manager feature Logical partitioning: Hitachi Cache Partition Manager feature | Cache binding: Hitachi Cache Residency Manager feature Logical partitioning: Hitachi Cache Partition Manager feature | Cache binding: Hitachi Cache Residency Manager feature Logical partitioning: Hitachi Cache Partition Manager feature |

Question: What is the capacity of The AMS 2500?