Promise Technology

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(promise rant)
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Promise Technology manufactures ATA and SATA (RAID) controllers, which usually feature Promise chips for the device interface and no RAID CPU, therefore they are "soft-RAIDs".
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Promise Technology manufactures ATA and SATA (RAID) controllers, which usually feature Promise chips for the device interface and nearly always no RAID CPU, therefore they are "soft-RAIDs" (except the higher-priced models).
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Almost everyone has some stories to tell about the usage of Promise controllers, most of these end with "stay away from Promise".
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Stay away from the Promise-based (PDCxxxxx) IDE-Controllers under Linux (and probably other Opensource OS too). They ''WILL'' cause (mostly silent) data corruption. Get a Silicon Image based controller instead ([http://geizhals.at/eu/a36191.html Dawicontrol DC-133] for example).
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Common to these trouble reports are:
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* Controller is used with an OS that is not Windows
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* More-than-nothing I/O
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* Log entries like "... tried to write beyond end of device ..."
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* RAID/Data was missing after a reboot
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Revision as of 02:10, 4 June 2006

Promise Technology manufactures ATA and SATA (RAID) controllers, which usually feature Promise chips for the device interface and nearly always no RAID CPU, therefore they are "soft-RAIDs" (except the higher-priced models).

Stay away from the Promise-based (PDCxxxxx) IDE-Controllers under Linux (and probably other Opensource OS too). They WILL cause (mostly silent) data corruption. Get a Silicon Image based controller instead (Dawicontrol DC-133 for example).

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