Simmetrix és un sistema d'emmagatzemament empresarial desenvolupat per EMC Corporation. Hi ha set generacions de maquinari Symmetrix des dels seus inicis el 1994 fins al darrer model l'any 2006.[1][2]
Generacions d'EMC Symmetrix
| Generació | Model | Drives | Slots | Descripció |
| Primera Generació | Symmetrix 4200 | | |
| Symmetrix 4400 | | 4 MB (4 MiB) cache, RAID1 |
| Symmetrix 4800 | | |
| Segunda Generació | Symmetrix 5500_3 | | |
| Symmetrix 3.0 | | | | Open Symmetrix, SRDF, FWD SCSI Front End option, RAID-S |
| Symmetrix 4.0 | Symmetrix 3330/5330 | 9/18 GB | 32 | Introduction of TimeFinder |
| Symmetrix 3430/5430 | 9/18 GB | 96 |
| Symmetrix 3500/5500 | 3/4/9 GB | 128 |
| Symmetrix 3700/5700 | 18/23/47 GB | 128 |
| EMC Symmetrix 4.8 | Symmetrix 3630/5630 | 18/36GB | 32 | Introduction of FC front end |
| Symmetrix 3830/5830 | 18/36/50 GB | 96 |
| Symmetrix 3930/5930 | 18/36/50 GB | 256 |
| EMC Symmetrix 5.0 | Symmetrix 8430 | 18/36/50/73 GB | 96 | 333 MHz PPC |
| Symmetrix 8730 | 18/36/50/73 GB | 384 |
| EMC Symmetrix 5.5 | Symmetrix 8230 | 36/73 GB | 48 | 400 MHz PPC, last SCSI back end |
| Symmetrix 8530 | 36/73/181 GB | 96 |
| Symmetrix 8830 | 36/73/181 GB | 384 |
| Symmetrix DMX | DMX800 | 73/146GB | 120 | 500 MHz PPC, FC back end, Direct Access to cache from all FE and BE directors |
| DMX1000 | 73/146 GB | 144 |
| DMX2000 | 73/146 GB | 288 |
| DMX3000 | 73/146 GB | 576 | 1000 MHz PPC, RAID 5 capable |
| DMX-3 | 73/500 GB | 2400 | 1.3 GHz PPC, Mirrored Global Cache, new denser drive packaging |
| DMX-3 950 | | | |
| DMX-4 | 73/750 GB | 2400 | 1.3 GHz PPC, Mirrored Global Cache, new denser drive packaging, 4 Gb internal infrastructure |
| DMX-4 950 | | | |
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