Is this overkill? Sd w/ 95 mbs

[Liggerstuxin]

Okay, so I keep burning out my sd cards that are class four. One of my raspberry pi's has a class 10 ST card in it and has latter longer than two of my class fours.
So now On this raspberry, I'm not messing around and I got another class 10.
Some cards have a read/write speed of 30 MB a second.

This one is 95

http://www.amazon.com/dp/B007NDL542/ref=pe_385040_30332200_pe_309540_26725410_item

Should I have just bought a regular class 10? Cause 95 seems pretty cool.

[rikardo1979]

I using Sandisk Extreme cards, and they are great. But this is just to much, no need that speed. 35 is just OK

[rikardo1979]

I've merged your threads as you double posted in two sections

[Liggerstuxin]

(10th Aug, 2013 01:01 AM)rikardo1979 Wrote:  I using Sandisk Extreme cards, and they are great. But this is just to much, no need that speed. 35 is just OK

Well, hopefully it lasts longer than my last two...

[IriDium]

For my money I'd get a small 2.5" external HDD and install onto that. (see post USB installation)

The speeds quoted are usually for sequential read, and as Xbian is mainly short I/O read and writes, you'd never really notice the difference.

[rikardo1979]

(10th Aug, 2013 01:16 AM)IriDium Wrote:  For my money I'd get a small 2.5" external HDD and install onto that. (see post USB installation)

The speeds quoted are usually for sequential read, and as Xbian is mainly short I/O read and writes, you'd never really notice the difference.

you just waste more power as u need to feed the HDD keep it green as possible m8

[Liggerstuxin]

(10th Aug, 2013 01:16 AM)IriDium Wrote:  For my money I'd get a small 2.5" external HDD and install onto that. (see post USB installation)

The speeds quoted are usually for sequential read, and as Xbian is mainly short I/O read and writes, you'd never really notice the difference.

So what I needed was one with the fastest short I/o r/w... Hopefully this one is fast at that too...

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(10th Aug, 2013 01:16 AM)IriDium Wrote:  For my money I'd get a small 2.5" external HDD and install onto that. (see post USB installation)

The speeds quoted are usually for sequential read, and as Xbian is mainly short I/O read and writes, you'd never really notice the difference.

Are you recommending this for reliability? Cause I don't need any space beyond what xbian needs.

[IriDium]

(10th Aug, 2013 01:39 AM)Liggerstuxin Wrote:  

(10th Aug, 2013 01:16 AM)IriDium Wrote:  For my money I'd get a small 2.5" external HDD and install onto that. (see post USB installation)

The speeds quoted are usually for sequential read, and as Xbian is mainly short I/O read and writes, you'd never really notice the difference.

So what I needed was one with the fastest short I/o r/w... Hopefully this one is fast at that too...

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(10th Aug, 2013 01:16 AM)IriDium Wrote:  For my money I'd get a small 2.5" external HDD and install onto that. (see post USB installation)

The speeds quoted are usually for sequential read, and as Xbian is mainly short I/O read and writes, you'd never really notice the difference.

Are you recommending this for reliability? Cause I don't need any space beyond what xbian needs.

There have been a lot of issues with corrupt SD cards. Many of these problems should be reduced with the *new* btrfs file system.

However, by moving the O/S off of the SD card onto external media means the SD card is only read at boot, then no longer touched. For that simple case, a class 4 will suffice.

A small USB powered HDD in the UK is only £30 for 100Gb and as it is USB powered it will only draw a max of 500ma - so as green as grass :-)

Obviously a solid state HDD would be better but my first name is not Sheik!

[Fred]

A usb powered hdd directly connected to the RPi is not recommended due to possible power issues.

[f1vefour]

I also recommend Class 4 cards, I have had no problems with SanDisk Class 4 cards.

I have a 16 gigabyte and two 4 gigabyte cards that are a couple of years old. The 4 gigabyte cards read at about 18MB/s and the 16 gigabyte reads at around 22MB/s. I have seen Class 10 cards read slower on the Pi (it's actually common).

[f1vefour]

(10th Aug, 2013 02:39 AM)Fred Wrote:  A usb powered hdd directly connected to the RPi is not recommended due to possible power issues.

Don't do it. Always use a powered USB hub. (adding to what you said(not directed at you)).

[Liggerstuxin]

(10th Aug, 2013 04:08 AM)f1vefour Wrote:  

(10th Aug, 2013 02:39 AM)Fred Wrote:  A usb powered hdd directly connected to the RPi is not recommended due to possible power issues.

Don't do it. Always use a powered USB hub. (adding to what you said(not directed at you)).

Well, I'll let you guys know if 1channel, film on, mash up, etc runs any different . Worst case scenario I have a card that will last longer...

I think Ill use a copied .img file of xbian for convenience. Do you think I should start over and do a clean install since I'm having problems, or should I just use this image that has everything the way I like it for the new card?

[f1vefour]

Back up your home folder and re-install is my advice, then copy the contents of your home folder back giving you all your plug-ins and such back.

[rikardo1979]

(10th Aug, 2013 02:48 PM)f1vefour Wrote:  Back up your home folder and re-install is my advice, then copy the contents of your home folder back giving you all your plug-ins and such back.

and export/import library - better to do this way

[IriDium]

It looks like the RPi MAXIMUM speed achieved from the SD card controller is 25MB/s but in reality only speeds of 22MB/s (due to overheads).