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Re: Competition for OraPerf

From: HansF <Fuzzy.Greybeard_at_gmail.com>
Date: Mon, 06 Nov 2006 03:35:13 GMT
Message-Id: <pan.2006.11.06.03.35.12.256203@gmail.com>


On Sun, 05 Nov 2006 18:51:18 -0800, Charles Hooper wrote:

> Charles Hooper wrote:

>> Is flash (drive) memory synonymous with SSD? Flash drive memory,
>> riding in a USB2 slot is not fast, especially when compared with a RAID

You will note that Mladen referred to "8GB flash disk like Ritek CFR8G-80X-G". That unit uses the CompactFlash specification ... the larger of the 'digital camera' removable cards. Fits in the universal card adapter that connects to the USB bus on my PC. I suspect you can get a variant of the adapter that fits in a PCI slot.

He's absolutely correct - it's a solid state disk device. Admittedly not quite like the SCSI or IDE SSDs from M-Systems or SolidData, which are the more common interpretation of 'SSD' and still generally run in the $10K range last time I checked (about 2 months ago).

And, theoretically the USB spec takes one up to very fast transfer rates. As long as one has USB 2, single device and no conflicts on the bus.

And, under Linux the USB disk mounts as /dev/sda[0-9], so one could even use it as a raw device.  

I've found with the flash drives is that write speed tends to be a bit on the low side, even compared to read speed.

-- 
Hans Forbrich   (mailto: Fuzzy.GreyBeard_at_gmail.com)   
*** Feel free to correct me when I'm wrong!
*** Top posting [replies] guarantees I won't respond.
Received on Sun Nov 05 2006 - 21:35:13 CST

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