About HDD

ZenXtr · 6th Dec 2006, 11:06 AM

I wanted to buy a new 250Gb HDD
I have some question about it,
I hope you guys might help me on it..

What does Raid ready mean?
What is the differences between 8mb buffer and 16mb buffer??

Chai · 6th Dec 2006, 11:47 AM

You can read about RAID from this article.
http://www.techarp.com/showarticle.a...tno=141&pgno=0

Bigger buffer is technically better for longer sustained burst read, but in real world, you probably can't feel any difference.

peaz · 6th Dec 2006, 12:12 PM

Wow.. my old RAID guide. haha. Well, while some of the technology in the article is a bit outdated, the concept of RAID is there and is still the same.

And technically, ALL HDD is RAID ready, that's just a marketing gimmick.

For the buffer size, bigger is always better, but you'd only feel it on very few scenarios, like when copying HUGE files.

ZenXtr · 6th Dec 2006, 12:32 PM

Quote:

Originally Posted by peaz

Wow.. my old RAID guide. haha. Well, while some of the technology in the article is a bit outdated, the concept of RAID is there and is still the same.

And technically, ALL HDD is RAID ready, that's just a marketing gimmick.

For the buffer size, bigger is always better, but you'd only feel it on very few scenarios, like when copying HUGE files.

ALL HDD is RAID ready?? Inlcude P-ATA?

=========================================

Thanks you guys for answering my question..^^
I ordered Hitachi HDT722525DLA380.
Since it jz for personal use, i think it is fair enough..

zy · 6th Dec 2006, 12:37 PM

RAID depends on the chipset

usually you need 2 Hard Disk or more for RAID configuration

peaz · 6th Dec 2006, 02:52 PM

Yup. RAID technology has been around for ages. It's actually the chipset that does all the RAID-ing work. The guide I wrote years ago was for PATA harddisk using a RAID card to enable RAID on two or more hard disk.

Olle P · 7th Dec 2006, 07:10 AM

Quote:

Originally Posted by ZenXtr

What is the differences between 8mb buffer and 16mb buffer?

Well, I rather have 8MB than 2MB, but isn't willing to pay for more than that...

Regarding RAID, you can always look at the possibilities with MacOS:
USB FLOPPY DISK STRIPED RAID UNDER OS X

Mega Floppy 2006

/Olle

peaz · 7th Dec 2006, 08:49 AM

Quote:

Originally Posted by Olle P

Well, I rather have 8MB than 2MB, but isn't willing to pay for more than that...

Regarding RAID, you can always look at the possibilities with MacOS:
USB FLOPPY DISK STRIPED RAID UNDER OS X

Mega Floppy 2006

/Olle

As mentioned by Chai earlier in his post, the bigger the buffer, the better it can sustain a high transfer rate when transferring/reading very large files.

If there's not much difference in terms of the price between 8mb and 16mb (which i suspect there's not much difference nowadays) why not just get the 16mb one.

Olle P · 7th Dec 2006, 08:00 PM

Quote:

Originally Posted by peaz

If there's not much difference in terms of the price between 8mb and 16mb ... why not just get the 16mb one.

Since it's extremely rare for me to transfer very large files the price difference, although small, really outweights the negligable gain in performance.
(Performance gained is perhaps as much as a few seconds trasfer time per year, not worth a couple of bucks to me.)

/Olle

sbrehm72255 · 7th Dec 2006, 09:37 PM

The big thing I noticed between the 2 cache size was when I built my sons rig and installed his new 250gig 16mb cache Seagate. Reinstalling Windows was super quick when compared to loading it on a 8mb cache hard drive. Under normal usgae though, I really can't tell any huge difference betweent the 2.
But I am looking to upgrade my HD to one of the new Seagates with 16mb cache though as well, when I get the extra cash that is...............

6th Dec 2006, 11:06 AM	#1 (permalink)
ZenXtr Newbie Join Date: 6 Dec 2006 Posts: 3 Reputation: 0 Rep Power: 0	About HDD I wanted to buy a new 250Gb HDD I have some question about it, I hope you guys might help me on it.. What does Raid ready mean? What is the differences between 8mb buffer and 16mb buffer??

6th Dec 2006, 11:47 AM	#2 (permalink)
Chai Administrator Join Date: 6 Oct 2002 Location: Maranello Posts: 27,884 Reputation: 4630 Rep Power: 81	You can read about RAID from this article. http://www.techarp.com/showarticle.a...tno=141&pgno=0 Bigger buffer is technically better for longer sustained burst read, but in real world, you probably can't feel any difference. __________________ Chai (Contributor & Forum Admin) http://www.techarp.com/

6th Dec 2006, 12:12 PM	#3 (permalink)
peaz ARP Webmaster Join Date: 13 Oct 2002 Location: http://atpeaz.placidthoughts.com/ Posts: 8,584 Reputation: 1673 Rep Power: 32	Wow.. my old RAID guide. haha. Well, while some of the technology in the article is a bit outdated, the concept of RAID is there and is still the same. And technically, ALL HDD is RAID ready, that's just a marketing gimmick. For the buffer size, bigger is always better, but you'd only feel it on very few scenarios, like when copying HUGE files. __________________ Ken Ng Tech ARP Follow me at Twitter Shoot and Earn Money from Stock Photography

6th Dec 2006, 12:37 PM	#5 (permalink)
zy Dead Join Date: 16 Dec 2002 Location: Buffalo NY / Penang MY Posts: 13,336 Reputation: 2158 Rep Power: 41	RAID depends on the chipset usually you need 2 Hard Disk or more for RAID configuration __________________

6th Dec 2006, 02:52 PM	#6 (permalink)
peaz ARP Webmaster Join Date: 13 Oct 2002 Location: http://atpeaz.placidthoughts.com/ Posts: 8,584 Reputation: 1673 Rep Power: 32	Yup. RAID technology has been around for ages. It's actually the chipset that does all the RAID-ing work. The guide I wrote years ago was for PATA harddisk using a RAID card to enable RAID on two or more hard disk. __________________ Ken Ng Tech ARP Follow me at Twitter Shoot and Earn Money from Stock Photography

7th Dec 2006, 09:37 PM	#10 (permalink)
sbrehm72255 Warming up Join Date: 6 Dec 2006 Posts: 90 Reputation: 99 Rep Power: 0	The big thing I noticed between the 2 cache size was when I built my sons rig and installed his new 250gig 16mb cache Seagate. Reinstalling Windows was super quick when compared to loading it on a 8mb cache hard drive. Under normal usgae though, I really can't tell any huge difference betweent the 2. But I am looking to upgrade my HD to one of the new Seagates with 16mb cache though as well, when I get the extra cash that is...............