Would that explain why my CF card got corrupted and had to be
reformatted? I was running OpenBSD on it with the FFS file system and a
StarTech IDE adapter. Seems OK now but I'm not sure how reliable it is
without more testing. How do you find a reliable CF card?
Peter M.
Simon P. Ditner wrote:
I think it was Dave that was recommending the solid state disks.
When moving over to solid state, keep in mind that the consumer CF/SD
cards are not designed for environments where there are a lot of small
writes. The technology is improving rapidly as well, so the market is
now swimming in flash of varying degrees of durability with no clear
identification.
There are wear levelling algorithms built into the cards to help
extend the lifetime of the flash, but you'd be surprised how many
writes there are when using conventional filesystems! For instance,
every time you access a file, the atime (last access time) gets
updated unless you disable it.
Another caveate is that the cell size is (I believe) 32kb, and
requires a full erase/write cycle to update any byte in that cell. You
unfortunately can not control this, as the memory storage mechanism is
abstracted away in the hardware and presented to you as a block device
unless you are using an MTD (you're likely not if ATA/IDE/USB adapters
are involved).
This will all be moot in a year or so though, the newer solid state
disks support a stupid number of writes.
--
| It ain't what you don't know that gets you into trouble. It's what
| you know for sure that just ain't so. -- Mark Twain
|
| Network: http://www.linkedin.com/in/spditner
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| http://twitter.com/spditner
On Sat, 7 Feb 2009, Henry L.Coleman wrote:
Hi all, thanks to a tip from Simon I'm looking at replacing HD with
Solid state drive SDHD in IBM thinkcentre PCs I would have to replace
the IDE drive for a new drive anyway, so the cost for the adaptor and
memory card (say 8/16 Mb) must be in the region of $85
My question is can I what combo would work well as there are many
adaptors (at Dealextreem) and lots of memory types.
H
=================================
Henry L.Coleman [www.VoIP-PBX.ca]
Tel: 647-723-5160 Ext.203
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