John Drescher wrote:
> ---------- Forwarded message ----------
> From: John Drescher <drescherjm AT gmail DOT com>
> Date: Mon, May 18, 2009 at 2:41 PM
> Subject: Re: [Bacula-users] eSATA drive for storage
> To: jeff AT seamanpaper DOT com
>
>
> 2009/5/18 Jeff Dickens <jeff AT m2.seamanpaper DOT com>:
>
>> Is anyone using eSATA drives for removable storage? I bought a couple of
>> 1TB drives - the brand name was "Fantom" for $115 each. Tough to buy tape
>> cartridges at that price, never mind the drives. I'd like to use try using
>> them with Bacula to take big archives off site.
>>
>> I guess the real need is for an eSATA card that is well supported by the OS.
>> I'm using CentOS, and I don't yet have any PCI-E based systems.
>>
>
> How about any old sata controller with an esata bracket..
>
Stay away from eSata brackets. They should only be used as a last resort.
The problem is that they are a break in the cable. At the extremely high
data rates for eSata, this causes signal reflection and data errors. If
you do have to use an eSata bracket, you may need to reconfigure that
SATA port to only use 1.5 GB; I hear that with that setting it is
usually reliable.
But what you really want is to have a single uninterrupted cable going
directly from the port to the hard disk.
Fortunately, you can buy eSATA PCI cards for around $30 nowadays. One
pitfall: make sure that it actually says "eSATA". Many manufacturers are
cutting corners and put a cheaper internal SATA connector on the
external bracket. That's actually illegal (can get you in trouble with
the FCC for radio interference).
Worse - at first glance, the two connectors look the same, but they
actually have different shapes (SATA is L-shaped, eSATA is I shaped). So
if you have trouble plugging it in, you probably have the wrong connector.
--
Kevin Keane
Owner
The NetTech
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