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#1
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Firmware update sufficient to increase hard disk capacity?
Hi,
now, as new harddisks with more capacity per platter come out, I have noticed that there are some "strange" models in most manufacturer's lines: For example, Hitachi has an "80" GByte model in their GXP 180 line, which maybe should be more properly called "90" GByte (see http://www.hgst.com/hdd/support/d180gxp/d120gxpmod.htm). What can be observed is that this model fills the manufacturer's gap at 80 GByte with 60 GByte per platter. The 60 GByte model has one platter, the 120 GByte model has 2 (and uses them fully), but the "90" GByte model has 2 platters and only 3 data surfaces... so they say (see http://ssddom01.hgst.com/tech/techlib.nsf/techdocs/CF02BAB6EA8E3B7F87256C16006B1CFA/$file/HGSTDesklstar180GXP.PDF). My suspicion is that this is not the whole truth. I think it is easier for manufacturers to produce just one type of mechanism and stuff it with the appropriate PCB or just another firmware to reduce the advertised model number and capacity. In the Hitachi case, this could be reached by just using 3 heads or - even better, i.e. more performant - by reducing the number of cylinders instead. Has anyone opened such a drive (not neccessarily Hitachi brand) and knows if the missing "head" is really there? Is it possible to exchange the firmware with one for the next larger model and re-format the drive afterwards? The IBM/Hitachi "Drive Feature Tool" seems to exist in a version with firmware update images included and checks the model number of the drive found. I have found two firmware upgrade tools by Seagate for the infamous Barracuda IV series, one for update from 3.x to 3.10 and one for 3.10 to 8.12. The first of those does not check the preexisting version, the latter does. There seem to be some kind of certificates involved (.CRT files), which seem to be an indication that the manufacturers protect their firmwares. Adding to that, few hard disk firmwares are widely available, other than those for optical drives (http://www.firmware-flash.com). So: Is this feasible? Has anyone done it? Kind regards |
#2
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The 80 G drive may be a way for them to use those defect platters instead
of throwing them away. With the low cost of drives now I think i'd just buy the bigger one to begin with. "Dr. Uwe Meyer-Gruhl" wrote in message ... Hi, now, as new harddisks with more capacity per platter come out, I have noticed that there are some "strange" models in most manufacturer's lines: For example, Hitachi has an "80" GByte model in their GXP 180 line, which maybe should be more properly called "90" GByte (see http://www.hgst.com/hdd/support/d180gxp/d120gxpmod.htm). What can be observed is that this model fills the manufacturer's gap at 80 GByte with 60 GByte per platter. The 60 GByte model has one platter, the 120 GByte model has 2 (and uses them fully), but the "90" GByte model has 2 platters and only 3 data surfaces... so they say (see http://ssddom01.hgst.com/tech/techli...E3B7F87256C160 06B1CFA/$file/HGSTDesklstar180GXP.PDF). My suspicion is that this is not the whole truth. I think it is easier for manufacturers to produce just one type of mechanism and stuff it with the appropriate PCB or just another firmware to reduce the advertised model number and capacity. In the Hitachi case, this could be reached by just using 3 heads or - even better, i.e. more performant - by reducing the number of cylinders instead. Has anyone opened such a drive (not neccessarily Hitachi brand) and knows if the missing "head" is really there? Is it possible to exchange the firmware with one for the next larger model and re-format the drive afterwards? The IBM/Hitachi "Drive Feature Tool" seems to exist in a version with firmware update images included and checks the model number of the drive found. I have found two firmware upgrade tools by Seagate for the infamous Barracuda IV series, one for update from 3.x to 3.10 and one for 3.10 to 8.12. The first of those does not check the preexisting version, the latter does. There seem to be some kind of certificates involved (.CRT files), which seem to be an indication that the manufacturers protect their firmwares. Adding to that, few hard disk firmwares are widely available, other than those for optical drives (http://www.firmware-flash.com). So: Is this feasible? Has anyone done it? Kind regards |
#3
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"Dr. Uwe Meyer-Gruhl" wrote in message ... Hi, now, as new harddisks with more capacity per platter come out, I have noticed that there are some "strange" models in most manufacturer's lines: Have been for quite some time now. For example, Hitachi has an "80" GByte model in their GXP 180 line, which maybe should be more properly called "90" GByte (see http://www.hgst.com/hdd/support/d180gxp/d120gxpmod.htm). What can be observed is that this model fills the manufacturer's gap at 80 GByte with 60 GByte per platter. The 60 GByte model has one platter, the 120 GByte model has 2 (and uses them fully), but the "90" GByte model has 2 platters and only 3 data surfaces... so they say (see http://ssddom01.hgst.com/tech/techlib.nsf/techdocs/CF02BAB6EA8E3B7F87256C16006B1CFA/$file/HGSTDesklstar180GXP.PDF). My suspicion is that this is not the whole truth. I think it is easier for manufacturers to produce just one type of mechanism and stuff it with the appropriate PCB or just another firmware to reduce the advertised model number and capacity. In the Hitachi case, this could be reached by just using 3 heads or - Which is exactly what they say. even better, i.e. more performant - by reducing the number of cylinders instead. Unfortunately that would make it fall out of line in the specification department and also a bit more expensive to make. Has anyone opened such a drive (not neccessarily Hitachi brand) and knows if the missing "head" is really there? Is it possible to exchange the firmware with one for the next larger model and re-format the drive afterwards? The firmwares are the same for each capacity in that model (at least, they used to be). It configures itself with data contained on the platters. The IBM/Hitachi "Drive Feature Tool" seems to exist in a version with firmware update images included and checks the model number of the drive found. I have found two firmware upgrade tools by Seagate for the infamous Barracuda IV series, one for update from 3.x to 3.10 and one for 3.10 to 8.12. The first of those does not check the preexisting version, the latter does. There seem to be some kind of certificates involved (.CRT files), which seem to be an indication that the manufacturers protect their firmwares. Adding to that, few hard disk firmwares are widely available, other than those for optical drives (http://www.firmware-flash.com). So: Is this feasible? Has anyone done it? Kind regards |
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