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Do you have a pair (or more) of devices on the market that doesn't generate a unique ID when hashing the model string and the serial number? I can't imagine how this wouldn't already be unique... --eric > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Elliott, Robert (Server Storage) > Sent: Friday, October 08, 2004 9:17 AM > To: [EMAIL PROTECTED] > Subject: [t13] Could Model Number field start with manufacturer ID? > > > This message is from the T13 list server. > > > Would it be possible in ATA/ATAPI-8 to require the Model Number field > (words 27-46 in IDENTIFY DEVICE) start with a manfacturer > identification > string? Do existing ATA devices already do this? > > The Model Number format would be: > * must contain ASCII characters (same as today) > * uses the swaps-every-pair-of-bytes order (same as today) > * must be left-aligned (no padding with spaces at the start of the > string) > * start with a manufacturer ID string. This could be an 8-byte T10 > vendor ID string, or a new T13 vendor ID if the 8-byte T10 IDs are > deemed unsatisfactory (unfortunately requiring T13 to maintain a > database of said IDs). It must not contain an ASCII space. > * follow with an ASCII space (20h) > * follow with ASCII characters chosen by that manufacturer (the model > number of the device) > > If this rule were in place, then the combination of the Model > Number and > Serial Number fields would be worldwide unique. This would > help in SCSI > to ATA translators (SAT), which need to construct a worldwide unique > logical unit name but might only have the Model Number and > Serial Number > on which to base it. > > -- > Rob Elliott, [EMAIL PROTECTED] > Hewlett-Packard Industry Standard Server Storage Advanced Technology > https://ecardfile.com/id/RobElliott >
