[lug] USB3 vs eSATA III question

[Bear Giles]

I have a couple NUCs with that type of drive, plus an NVMe on main desktop.
No problems on any of them.

I just bought several of these:
https://www.amazon.com/Lexar-JumpDrive-64GB-Flash-Drive/dp/B00S5V5PEC  I
think I forgot to convert units - reading at 150 MBps is about 1.2 Gbps.
Not as fast as that stick but it's a lot cheaper.

I'll be able to say something about booting from USB soon - one of my
projects before I leave for trip next weekend is installing Ubuntu onto an
external (USB) drive. I've been traveling with two laptops - a bit of a
pain - and decided to try booting from a USB drive instead. My original
thought was a USB stick but I might use a portable drive instead.

On Sun, Jul 22, 2018 at 4:58 PM, Orion Poplawski <orion at nwra.com> wrote:

> We have several PCIe sssd laptops running EL7 with no issues.  Great
> performance.
>
>
> On 07/22/2018 12:39 PM, Davide Del Vento wrote:
>
>> I don't know anything about your question, but I'm seeing the most
>> recent/performant (SSD) drives are using PCIe instead of anything
>> else. I've also heard that booting linux from PCIe can be troublesome,
>> so I think I'll buy a normal SATA drive (I'm in the market for a small
>> one).
>>
>> On Sun, Jul 22, 2018 at 12:27 PM, Bear Giles <bgiles at coyotesong.com>
>> wrote:
>>
>>> This is mostly from curiousity...
>>>
>>> USB 3 has a claimed bandwidth of 3 Gbps.
>>>
>>> eSATA II has a claimed bandwidth of 3 Gbps, and eSATA III has a claimed
>>> benefit of 6 Gbps.
>>>
>>> I don't think any USB stick is going to be pushing 3 Gbps (but I'm not
>>> 100%
>>> certain), but perhaps an external hard drive, esp. an external SSD. But
>>> is
>>> that actually realistic?
>>>
>>> In contrast my experience with eSATA is that it really is akin a
>>> traditionally installed disk.
>>>
>>> Like I said this is mostly from curiosity. I noticed my recent systems
>>> haven't had eSATA ports but it's easy to add a half-height card for one.
>>> Ditto external drives - they usually only have USB 3 but if you buy an
>>> external drive case for your own drive then it's easy to find them with
>>> both
>>> USB 3 and eSATA. So I have my eSATA gear but it might not be necessary
>>> any
>>> longer if the quoted USB 3 numbers are accurate.
>>>
>>> Does anyone else have experience with both USB 3 and eSATA?
>>>
>>> (Meanwhile I'm wondering what to do with a few old external drives that
>>> are
>>> USB 2. They're so much slower and smaller than my external USB 3 drives.)
>>>
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>
> --
> Orion Poplawski
> Manager of NWRA Technical Systems          720-772-5637
> NWRA, Boulder/CoRA Office             FAX: 303-415-9702
> 3380 Mitchell Lane                       orion at nwra.com
> Boulder, CO 80301                 https://www.nwra.com/
>
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