Sonnet Technologies Tempo SATA E4P 4-Port Serial ATA Controller
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- PCI Express x4 Bus Type
- Native PCI Express (PCIe) x4 host bus interface for high-performance applications
- FIS-based Port Multiplier-aware to support up to 20 disks drives
- Four eSATA External Connectors
- Spread Spectrum Clocking (SSC) support for compatibility with all SATA drives
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Product Line: TempoProduct Model: SATA E4PProduct Name: TEMPO SATA E4P 4 Port Serial ATA ControllerProduct Type: Serial ATA ControllerHost Interface: PCI Express x4Data Transfer Rate: Up to 2.34 Gbps - Per PortDrive Support: Up to 20 x Serial ATA/300Drive Type: Serial ATA/300 Serial ATA/150Ports: 4 x 7-pin eSATA Serial ATA/300 External SATA ExternalForm Factor: Plug-in CardPackage Contents: TEMPO SATA E4P 4 Port Serial ATA Controller Quick Start GuideStandard Warranty: 3 Year Limited
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I'm a software developer and have sent several bug reports with loads of diagnostics but after 4 months nothing has been done.
Obviously, if I'd known their software was broken I would not have purchased this product.
I was a bit hesitant to go with a port-multiplier system, thinking that it would adversely affect performance. But both disk subsystems perform extremely well, with the RAID able to sustain uncompressed 1080/60i HDTV without a problem. You could probably get a bit more performance by not using the port multiplier, but then you are limited in the number of drives you can connect, since the densest SATA controller I know of is just 8 ports.
I'm satisfied enough with this that I'm ordering another to install into a new Mac Pro (Intel-based) system.
Sonnet makes great products, I own many sonnet products and find them to be of great build quality and reliability.
Sonnet tech support confirmed that the card blocks HD sleep commands.
It's not a deal-breaker, but still a disappointment.