on 2013-12-23 15:16 Larry Colen wrote
On Mon, Dec 23, 2013 at 04:54:40PM -0500, Igor Roshchin wrote:
Stan,
Just one question/comment:
Why would you have an external SSD and internal HD?
Because Apple prices on upgrading a hard drive are on the far side
of rapacious. I've also heard rumors that upgrading internal drives
on some of the new macs (macbooks anyways) cannot be done without a
soldering iron. In any case, upgrading the HD in my older iMac
looked like it would be a major pain.
an external SSD can be just as fast as internal, and i think it's a good option
for flexibility and cost-savings given what Apple supplies
afaik, none of the current Apple products needs a soldering iron to replace the
drive; in the laptops, Apple is using proprietary form factors and connectors,
but there are replacement units available
on the new iMac, the hard drive is an ordinary SATA drive, not soldered in, but
to get to it you have to separate the display panel from the chassis by
spudging through adhesive foam, so it's much hairier than the suction cup
procedure that the previous iMacs used
<http://www.ifixit.com/Guide/iMac+Intel+27-Inch+EMC+2639+Hard+Drive+Replacement/19643>
of the current Macs, i believe only the Mini and the non-retina 13" MacBook Pro
have relatively straightforward drive-replacement procedures
My understanding is that Thunderbolt is basically an external SATA.
no, not SATA — Thunderbolt is literally a transport for PCIe plus DisplayPort;
that's why it works directly with DisplayPort monitors, using only a Mini
DisplayPort cable, whereas for storage devices, all the logic of a PCI-SATA
interface is required, which contributes to the cost
most SSDs today will not saturate USB-3 on their own, but RAID or
drive-to-drive transfers on the same USB bus could saturate it
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