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AuthorTopic: New SCSI II to Micro SD Card Adapter At AmigaKit.com  (Read 3347 times)

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Offline amigakit

New SCSI II to Micro SD Card Adapter At AmigaKit.com
« on: October 16, 2015, 04:22:56 AM »
We are pleased to announce availability of the new SCSI to Micro SD Card Adapter at AmigaKit.com



Please click here for more information

We can supply a range of SCSI cables also to complement this adapter.
www.AmigaKit.com - Amiga Hardware/Software Dealer

New Products  --   Customer Help & Support -- @amigakit

USA Toll Free Order Tel: 1-888-698-6758
 

Online Gulliver

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #1 on: October 16, 2015, 05:02:35 AM »
Hi, I am interested in this product, but first I would like to know what speed have you obtained in your tests using this device.

Thanks.
 

Offline QuikSanz

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #2 on: October 16, 2015, 05:09:22 AM »
Good question, What can we expect from it?
 

Offline mongo

 

Offline Jiffy

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #4 on: October 16, 2015, 08:40:38 AM »
Tempting... :-)
Life sucks. Then you die. Then they throw mud in your face. Then you get eaten by worms. Be happy it happens in that order... My Amiga 1200
 

Offline kamelito

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #5 on: October 16, 2015, 11:25:41 AM »
Quote from: amigakit;797513
We are pleased to announce availability of the new SCSI to Micro SD Card Adapter at AmigaKit.com



Please click here for more information

We can supply a range of SCSI cables also to complement this adapter.

Let's say I buy it what do I need to save my A3000 HD using this?

Kamelito
 

Offline Doraemon

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #6 on: October 16, 2015, 12:09:16 PM »
I need something similar but for the cyberstorm ppc with the UWscsi support.
I will think to add one of this to the blizzard ppc scsi2.
 

Offline Yasu

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #7 on: October 16, 2015, 12:10:20 PM »
Nice!

Offline Matt_H

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #8 on: October 16, 2015, 12:10:36 PM »
Quote from: kamelito;797521
Let's say I buy it what do I need to save my A3000 HD using this?

Kamelito


Just slap a microSD card in it and it behaves like a normal hard drive. Back up your existing drive as usual.

There's a firmware config utility at the link provided by mongo above that allows you to adjust some settings (including SCSI ID) via USB connection to a Mac/Windows/Linux box.
 

Online Gulliver

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #9 on: October 16, 2015, 12:27:31 PM »
Quote from: mongo;797516
http://www.codesrc.com/mediawiki/index.php?title=SCSI2SD

So please explain it in easy and simple terms, what would the performance be like in an Amiga with either FFS or PSF3 as filesystems?

From the articlcle:

Transfer Size (bytes):    512             2048    8192               65536
Read                            2MB/s    2.1MB/s    2.5MB/s       2.6MB/s
Write                    125kB/s    441kB/s    1.5MB/s       2.3MB/s


So which one is it?
I am really worried about the write speed, as there is a huge diffrence between 125kB/s and 2.3MB/s
 

Offline pVC

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #10 on: October 16, 2015, 04:09:20 PM »
Quote from: Gulliver;797525
So please explain it in easy and simple terms, what would the performance be like in an Amiga with either FFS or PSF3 as filesystems?

From the articlcle:

Transfer Size (bytes):    512             2048    8192               65536
Read                            2MB/s    2.1MB/s    2.5MB/s       2.6MB/s
Write                    125kB/s    441kB/s    1.5MB/s       2.3MB/s


So which one is it?
I am really worried about the write speed, as there is a huge diffrence between 125kB/s and 2.3MB/s

I assume transfer size would be filesystem's blocksize and that can be defined when defining the partitions. First three probably are possible with all Amiga's filesystems, but I'm not sure about that biggest one... at least SFS supported up to 32768 bytes at some point. Usually they default to 512 bytes... the bigger you set it the more space is wasted with small files (like Amiga has), but it gets faster especially with bigger files. It's a compromize, but 2k or 4k would still be acceptable in many cases.

But in any case that doesn't sound very fast. Maybe more ok for old SCSI controllers in A500 or so, but for example with Blizzard SCSI Kit on A1200 you could get up to 10MB/s speeds and that kind of 2MB/s would be a bottle neck and not faster than internal IDE speeds. Of course CPU load should be much lower even then.
« Last Edit: October 16, 2015, 04:27:46 PM by pVC »
Daily MorphOS user and Amiga active.
 

Offline kamelito

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #11 on: October 16, 2015, 04:13:06 PM »
I'll probably get one transfer my datas and thought about selling my 3000 and concentrate on the fpgaarcade.
Kamelito
 

Offline LoadWB

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #12 on: October 16, 2015, 06:47:40 PM »
This is neat:

"The power supply has been reworked to be much more efficient, and will allow the new SCSI2SD to run on the terminator power alone. In many cases there will be no need for the power cable."  (From the codesrc website)

This has promise for use in my TI.
 

Offline QuikSanz

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #13 on: October 17, 2015, 02:54:54 AM »
Quote from: pVC;797532
I assume transfer size would be filesystem's blocksize and that can be defined when defining the partitions. First three probably are possible with all Amiga's filesystems, but I'm not sure about that biggest one... at least SFS supported up to 32768 bytes at some point. Usually they default to 512 bytes... the bigger you set it the more space is wasted with small files (like Amiga has), but it gets faster especially with bigger files. It's a compromize, but 2k or 4k would still be acceptable in many cases.

But in any case that doesn't sound very fast. Maybe more ok for old SCSI controllers in A500 or so, but for example with Blizzard SCSI Kit on A1200 you could get up to 10MB/s speeds and that kind of 2MB/s would be a bottle neck and not faster than internal IDE speeds. Of course CPU load should be much lower even then.


So what your saying basically is this is a great boot partition but not a HD replacement.
Read is good, write, not so much!

Chris
 

Offline matthey

Re: New SCSI II to Micro SD Card Adapter At AmigaKit.com
« Reply #14 on: October 17, 2015, 06:06:59 AM »
Quote from: QuikSanz;797539
So what your saying basically is this is a great boot partition but not a HD replacement.
Read is good, write, not so much!


More like seek is good, read is ok, and write is slow. Only asynchronous transfers are supported which will limit maximum transfer speeds. It is quick but not fast. It should be a reliable and affordable alternative to aging 50 pin SCSI hard drives but there are higher performance options.