[rescue] Total corporate madness (
mcguire at neurotica.com
Mon Aug 4 16:01:37 CDT 2003
On Monday, August 4, 2003, at 03:54 PM, Frank Van Damme wrote:
>>> It works, it's SCREAMING fast, it's standardized, it's supported, and
>>> it's readily available.
>> Oh, and it's cheap, if you can find T-cards. But the adapters and
>> devices are cheap, and multimode fibre is practically disposable
>> compared to 68-pin SCSI cables.
> Wait a second wait a second. What are T-cards? What's the difference
> an adaptor and a controller?
A T-card is a "test card"...FC-AL drives are generally only used in
large enclosures (i.e. disk arrays), not installed in a desktop machine
for individual use like SCSI or ATA/IDE. A T-card lets you use FC-AL
drives in that configuration. It's a very simple card which basically
amounts to a cable adapter of sorts. The only real restriction is that
to use a T-card, your FC-AL interconnect must be copper, not
fiber...FC-AL can be either.
Adapter vs. controller...ahh the imprecision of english. The proper
name for an FC-AL controller is "HBA", for "host bus adapter". While
"adapter" can refer to anything from an RS232 gender changer to a disk
controller. It's pretty variable.
In the context quoted above, however, I believe Jon was referring to
controller cards. They're much more expensive than, say, a Taiwanese
IDE board, but that's because they DO more than Taiwanese IDE boards.
You can get Adaptec QLA-2100 boards (an old, but plenty good 64-bit
66MHz PCI FC-AL HBA) on eBay for less than $40 nowadays. They're
available with both fiber and copper interfaces.
Dave McGuire "You don't have Vaseline in Canada?"
St. Petersburg, FL -Bill Bradford
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