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[relliott]

Hello,

I'm considering purchasing the DNS 323. The reviews are very good and I know at least two people who have purchased the product. I'm looking at hard drive options and see that 1TB drives with the ATA-3000 standard (3.0GB/S) are now abundant and affordable. Is there, or will there be ATA-3000 support for the DNS 323? I read on one of the reviews that the ATA-3000 drives used in the review needed to be jumpered to ATA-1500 mode in order to work with DNS-323...

Thanks,

[ttmcmurry]

While rare to need the drive jumpered to come compatibility mode; I'm using two Seagate 1TB drives that are SATA-II without problem for the last 10 months or so.

[relliott]

OK so no jumpering required however I'm guessing you are not benefiting from the 3.0GB/S speed your drives are capable of?

[ttmcmurry]

Technically, no. 

This NAS doesn't have powerful enough hardware to fully take advantage of SATA-II, letalone SATA-I.  Most users are seeing anywhere from 8mbps-64mbps (1-8MB/sec) on average.  There are some scenarios where people have had rates of 104-160mbps (13-20MB/sec) but not consistently so.

There are other factors such as LAN hardware (1000-tx vs 100-tx & jumbo packet support) or WLAN that have a direct impact on performance.  It seems the network matters more than the SATA revision.

[Arvald]

first off a little correction... SATA2 is 3Gigabits per second.  not capital B which is bytes.

remember Gigabit networking is only 1000 Mb/s (1/3 the speed of SATA2 and slower then SATA1) and you are sharing that link with other overheads.

to take advantage of 3000Gb/s you'd need 10Gb networking... good luck getting that for home networking and on a home NAS unit.

[bigclaw]

Here are some values to show that the SATA interface speeds are largely irrelevant in this discussion (except for compatibility reasons discussed above maybe).

3 Gb/s ~= 300MB/s.
1.5 Gb/s ~= 150MB/s.
Fastest SATA drives today ~= 100MB/s
DNS-323 max speeds ~= 15 - 30MB/s

[relliott]

Great!, all very informative

While we are mentioning small corrections I would like to point out that SATA 2 or SATA II is a misnomer and WAS the name of the standards committee which defined the latest 3GBit/s standard and not the standard name. They have since been renamed to SATA-IO, aka SATA 2 or SATA II .

Thanks!

[Arvald]

Great!, all very informative

While we are mentioning small corrections I would like to point out that SATA 2 or SATA II is a misnomer and WAS the name of the standards committee which defined the latest 3GBit/s standard and not the standard name. They have since been renamed to SATA-IO, aka SATA 2 or SATA II .

Thanks!

All well and great but they (and the hardware) is labelled now and they are stuck.
once a term enters the common vernacular they are stuck with it. 

also good add on Bigclaw.