Re: eSATA transfer speed

2010-08-22 Thread Dan
At 10:27 PM -0500 8/21/2010, Kris Tilford wrote: On Aug 21, 2010, at 9:32 PM, Dan wrote: SeriTek 1V4 is SATA I, 1.5 Gbps burst, 150 MB/sec (1.2 Gbps) nominal on a good day. This isn't exactly right. Copied below [snip] SeriTek/1VE2+2 The card in question is a 1V4 not a 1VE2+2.

Re: eSATA transfer speed

2010-08-22 Thread ah...clem
On Aug 21, 6:33 pm, Eric Herbert wrote: You can only go as fast as the drive can read or write, whichever drive is slower.  3Gb/s is the maximum transfer rate the interface is capable of. Translates out to roughly 300MB/s.  The fastest hard drives on the market are only capable of reading at

Re: eSATA transfer speed

2010-08-22 Thread Eric Herbert
On Aug 22, 2010, at 1:16 PM, ah...clem wrote: the difference between HD speed and interface speed has been discussed on these lists many times. as eric correctly points out, the SATA-II interface is capable of handling 3 GB/s. but, new HDs themselves currently have sustained read/write

Re: eSATA transfer speed

2010-08-22 Thread Kris Tilford
On Aug 22, 2010, at 8:23 AM, Dan wrote: The card in question is a 1V4 not a 1VE2+2. These are identical cards with different configurations of ports, the V4 has four internal ports, the 2+2 has two internal and two external ports. Otherwise they are identical cards. The specs

eSATA transfer speed

2010-08-21 Thread John Carmonne
Hi All I recently installed a SeriTek 1V4 in my PM G4 and PM G5 the transfer speed is 88 sec's per GB on a 114 GB CCC. I was under the impression it would a lot faster than this I seem to remember a 3 GB per min claim. Is it possible I'm doing something wrong? Both HDD's are 2TB 7200 RPM

Re: eSATA transfer speed

2010-08-21 Thread Eric Herbert
On Aug 21, 2010, at 4:58 PM, John Carmonne wrote: Hi All I recently installed a SeriTek 1V4 in my PM G4 and PM G5 the transfer speed is 88 sec's per GB on a 114 GB CCC. I was under the impression it would a lot faster than this I seem to remember a 3 GB per min claim. Is it possible

Re: eSATA transfer speed

2010-08-21 Thread Chance Reecher
That doesn't seem right. On my Mac Mini I can get 18/19 MB per second (~1.1 GB per minute) copying from one SATA drive in a USB enclosure to another SATA drive in a USB enclosure and almost 35MB per second (~2.1 GB per minute) copying from said external to the 5400RMP internal. Perhaps its a

Re: eSATA transfer speed

2010-08-21 Thread Dan
At 2:58 PM -0700 8/21/2010, John Carmonne wrote: I recently installed a SeriTek 1V4 in my PM G4 and PM G5 the transfer speed is 88 sec's per GB on a 114 GB CCC. I was under the impression it would a lot faster than this I seem to remember a 3 GB per min claim. Is it possible I'm doing

Re: eSATA transfer speed

2010-08-21 Thread John Carmonne
On Aug 21, 2010, at 7:32 PM, Dan wrote: At 2:58 PM -0700 8/21/2010, John Carmonne wrote: I recently installed a SeriTek 1V4 in my PM G4 and PM G5 the transfer speed is 88 sec's per GB on a 114 GB CCC. I was under the impression it would a lot faster than this I seem to remember a 3 GB per

Re: eSATA transfer speed

2010-08-21 Thread John Carmonne
This isn't exactly right. Copied below are replies from FirmTek support about their SeriTek line of SATA I controllers, which would seem to support SATA II speeds in almost all circumstances where such speed is available: Kris Tilford asked FirmTek Support: Does Firmtek make a SATA II