Both hardware RAID controllers are feature packed and offer unique architectural advancements.
Look below to see why the 3ware 9500S is a good RAID controller and why the 9550SX is even better.
The 3ware 9550SX PCI-X to Serial ATA II RAID controller delivers over 380MB/sec RAID 5 writes and exceeds 800MB/sec RAID 5 reads,
making it 200% faster than the industry leading 3ware 9500S RAID controller. Available in 4, 8, 12, and 16-port configurations,
the 3ware 9550SX is the most compelling SATA hardware RAID solution available.
| Feature |
3ware 9500S |
3ware 9550SX |
9550SX Advantage |
| RAID 5 reads sequential (MB/s) |
>400 |
>800 |
 |
| RAID 5 writes sequential (MB/s) |
>100 |
>380 |
|
| StorSwitch: non-blocking switch fabric |
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|
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| # DMA channels |
14 |
32 |
|
| Packet size |
2K |
4K |
|
| StorSave: |
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| BBU |
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| 72 hours of protection |
|
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| Write journaling |
|
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| Secondary power loss support |
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| Missing array detection |
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| Dynamic sector repair |
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| Drive power-on reset protection (Drive POR) |
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| Extensive drive timeout recovery |
|
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| Out of band signaling retry (OOB) |
|
|
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| StorSave Profiles (StorSave II) |
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| Multi-lane connectivity |
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| StreamFusion: RAID 5 caching |
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| Native SATA |
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| SATA II features: |
|
|
|
| Gbps (maximum) |
1.5 |
3.0 |
|
| NCQ |
|
|
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| Robust RAID management feature set |
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| Web-based components |
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| Command-based components |
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| API software components |
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| RAID levels: 0, 1, 5, 10, 50, Single Disk, JBOD |
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| Hardware RAID w/on-board processor |
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| Processor / speed |
150MHz |
200MHz |
|
| Host interface |
PCI |
PCI-X |
|
| Host interface speed |
64-bit/66MHz |
64-bit/133MHz |
|
| Port count (maximum) |
12 |
16 |
|
| Low profile (maximum port count) |
4 |
8 |
|
| Onboard cache memory (maximum) |
128MB SDRAM (ECC) |
256MB DDR400 |
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| Bootable array support (over 2TB arrays) |
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| Online capacity expansion (OCE) |
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| Enclosure management via I2C |
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| RAID level migration (RLM) |
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| Stripe size migration |
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