RAID question

Vampyromaniac · Aug 12, 2004, 08:39 PM

Just a little question involving RAID:
Can you build a RAID-0 on just a single drive? I know it's pointless and would offer no advantage, but can it be done?
Also, does building a RAID-0 on a drive erase its contents? meaning, when you build the array, all data is lost?

Thanks

and I'm looking for answers, not questions

No_Style · Aug 12, 2004, 09:30 PM

Negative. It is not possible to create a RAID on a drive. RAID 0 setup requires a minimum of 2 HDDs.

When you create a RAID 0, the data is lost on the drives used.

krazy1 · Aug 12, 2004, 09:31 PM

Quote:

Originally Posted by Vampyromaniac

Just a little question involving RAID:
Can you build a RAID-0 on just a single drive? I know it's pointless and would offer no advantage, but can it be done?
Also, does building a RAID-0 on a drive erase its contents? meaning, when you build the array, all data is lost?

Thanks

and I'm looking for answers, not questions

All RAIDS require more then 1 physical disk.... and like No_Style said, all info will be wiped from the drive when you create the RAID

Vampyromaniac · Aug 12, 2004, 09:32 PM

Thanks guys

PangingJr · Aug 12, 2004, 10:20 PM

"Supports a single drive RAID 0"
i'm Not sure what is it? it's for SCSI drive only..
SCSI Controller Card "LSI Logic LSI20320-R U320"

Judas · Aug 13, 2004, 03:33 AM

There was a old theory i came across in my searches awhile back... that raid mode on a single drive may be possible.. although hard.. and in most cases.... would probably decrease preformance... in other cases.. increase.. depends on the type of hardive..

probably has been included in most drives now.. but by using 2 seperate platter or more.. and raiding the information across all the plaster evenely... .. the hardrive would be seen as one drive..... but the drive itself would see more then one...

pretty complicated ....

Vampyromaniac · Aug 13, 2004, 03:54 AM

Quote:

Originally Posted by Judas

probably has been included in most drives now.. but by using 2 seperate platter or more.. and raiding the information across all the plaster evenely...

I think that's already done to a certain extent, how the 5-platter IBM drives were so fast in their day.

Anyway, this wasn't for performance purposes, it was for allowing a single drive to be used on a RAID controller that doesn't support regular IDE mode. I've told my friend it won't work, but he said he might try it anyway

pr0digal jenius · Aug 13, 2004, 07:23 PM

i don't see why software RAID couldn't run RAID 0 on multiple partitions...altho i have never touched the stuff....promise fasttrak does the job for me

Vampyromaniac · Aug 13, 2004, 08:03 PM

there wouldn't really be any point to that, from a performance perspective. I don't think it's possible, because RAID controllers look at physical disks only, not partitions.

Anyway, to update: my friend said he succeded in his attempt! He said he put one drive on the RAID controller, and he defined the drive to be in the array, but didn't build the array, I think. And he tried it again, this time with data on the drive, and it still worked and the data stayed there.
Go figure.

Judas · Aug 13, 2004, 09:11 PM

Quote:

Originally Posted by Vampyromaniac

there wouldn't really be any point to that, from a performance perspective. I don't think it's possible, because RAID controllers look at physical disks only, not partitions.

Anyway, to update: my friend said he succeded in his attempt! He said he put one drive on the RAID controller, and he defined the drive to be in the array, but didn't build the array, I think. And he tried it again, this time with data on the drive, and it still worked and the data stayed there.
Go figure.

if all he was doing is using the drive as a single drive on a raid controller.. it would default to JBOD... and would keep the data and partitions are set....

THAT'S if the controller support JBOD...

Vampyromaniac · Aug 13, 2004, 09:17 PM

it doesn't, as I said, otherwise there wouldn't be a problem

Judas · Aug 13, 2004, 09:21 PM

Quote:

Originally Posted by Vampyromaniac

it doesn't, as I said, otherwise there wouldn't be a problem

I got a Highpoint tech controller...

Putting one drive in and setting ARRAY.... will default to either JBOD or something else... not sure.. but it'll define itself as ARRAY type and HDD0 usually...if he's got a setting for boot set array.... then it would probably default to that as well..

My controller doesn't have JBOD listed period... and it doesn't show up in any settings... it just automatically does it and lists the drive....

Vampyromaniac · Aug 13, 2004, 09:24 PM

if you don't have JBOD, then it's not doing that then, but treating is as a 1-drive array like my friend.
but it doesn't matter anyway, same end result.

Aug 12, 2004, 08:39 PM	#1
Vampyromaniac confutatis maledictis Join Date: May 2002 Location: somewhere dark Posts: 5,974 Rep Power: 77 System Specs	RAID question Just a little question involving RAID: Can you build a RAID-0 on just a single drive? I know it's pointless and would offer no advantage, but can it be done? Also, does building a RAID-0 on a drive erase its contents? meaning, when you build the array, all data is lost? Thanks and I'm looking for answers, not questions __________________ *Digitalis 3.3* Athlon 64 3000 // ASUS K8V SE Deluxe // 1024MB PC3200 (2-2-2-10 1T) ATI All-In-Wonder 9700 Pro // 20" Dell 2005FPW (DVI) M-Audio Revo 7.1 + Philips Acoustic Edge // Klipsch ProMedia 2.1 320/16 Western Digital WD3200KS + 120/8 Seagate 7200.7 NEC ND-3550A 16x DVD±RW + Lite-On 52x24x CD-RW Antec Sonata case // 480W Antec TruePower personal bests \|\| Aq'3: 46796 \| 3D'01: 20461 \| 3D'03: 6336 \| 3D'05: 2677 \| PC'04: 4605 \| PC'02: 7691,9092,1250

Aug 12, 2004, 09:30 PM	#2
No_Style Styleless Wonder Join Date: Jun 2002 Location: Ottawa, Ontario Posts: 6,034 Rep Power: 0	Negative. It is not possible to create a RAID on a drive. RAID 0 setup requires a minimum of 2 HDDs. When you create a RAID 0, the data is lost on the drives used. __________________ "The Best Style Is No Style" Specifications Here

Aug 12, 2004, 09:32 PM	Thread Starter #4
Vampyromaniac confutatis maledictis Join Date: May 2002 Location: somewhere dark Posts: 5,974 Rep Power: 77 System Specs	Thanks guys __________________ *Digitalis 3.3* Athlon 64 3000 // ASUS K8V SE Deluxe // 1024MB PC3200 (2-2-2-10 1T) ATI All-In-Wonder 9700 Pro // 20" Dell 2005FPW (DVI) M-Audio Revo 7.1 + Philips Acoustic Edge // Klipsch ProMedia 2.1 320/16 Western Digital WD3200KS + 120/8 Seagate 7200.7 NEC ND-3550A 16x DVD±RW + Lite-On 52x24x CD-RW Antec Sonata case // 480W Antec TruePower personal bests \|\| Aq'3: 46796 \| 3D'01: 20461 \| 3D'03: 6336 \| 3D'05: 2677 \| PC'04: 4605 \| PC'02: 7691,9092,1250

Aug 12, 2004, 10:20 PM	#5
PangingJr Member Join Date: Mar 2003 Posts: 5,989 Rep Power: 71	"Supports a single drive RAID 0" i'm Not sure what is it? it's for SCSI drive only.. SCSI Controller Card "LSI Logic LSI20320-R U320" Last edited by Net; Aug 12, 2004 at 10:29 PM.

Aug 13, 2004, 08:03 PM	Thread Starter #9
Vampyromaniac confutatis maledictis Join Date: May 2002 Location: somewhere dark Posts: 5,974 Rep Power: 77 System Specs	there wouldn't really be any point to that, from a performance perspective. I don't think it's possible, because RAID controllers look at physical disks only, not partitions. Anyway, to update: my friend said he succeded in his attempt! He said he put one drive on the RAID controller, and he defined the drive to be in the array, but didn't build the array, I think. And he tried it again, this time with data on the drive, and it still worked and the data stayed there. Go figure. __________________ *Digitalis 3.3* Athlon 64 3000 // ASUS K8V SE Deluxe // 1024MB PC3200 (2-2-2-10 1T) ATI All-In-Wonder 9700 Pro // 20" Dell 2005FPW (DVI) M-Audio Revo 7.1 + Philips Acoustic Edge // Klipsch ProMedia 2.1 320/16 Western Digital WD3200KS + 120/8 Seagate 7200.7 NEC ND-3550A 16x DVD±RW + Lite-On 52x24x CD-RW Antec Sonata case // 480W Antec TruePower personal bests \|\| Aq'3: 46796 \| 3D'01: 20461 \| 3D'03: 6336 \| 3D'05: 2677 \| PC'04: 4605 \| PC'02: 7691,9092,1250

Aug 13, 2004, 07:23 PM	#8
pr0digal jenius Delete Me Join Date: Mar 2004 Posts: 14,648 Rep Power: 0	i don't see why software RAID couldn't run RAID 0 on multiple partitions...altho i have never touched the stuff....promise fasttrak does the job for me

Aug 13, 2004, 09:17 PM	Thread Starter #11
Vampyromaniac confutatis maledictis Join Date: May 2002 Location: somewhere dark Posts: 5,974 Rep Power: 77 System Specs	it doesn't, as I said, otherwise there wouldn't be a problem __________________ *Digitalis 3.3* Athlon 64 3000 // ASUS K8V SE Deluxe // 1024MB PC3200 (2-2-2-10 1T) ATI All-In-Wonder 9700 Pro // 20" Dell 2005FPW (DVI) M-Audio Revo 7.1 + Philips Acoustic Edge // Klipsch ProMedia 2.1 320/16 Western Digital WD3200KS + 120/8 Seagate 7200.7 NEC ND-3550A 16x DVD±RW + Lite-On 52x24x CD-RW Antec Sonata case // 480W Antec TruePower personal bests \|\| Aq'3: 46796 \| 3D'01: 20461 \| 3D'03: 6336 \| 3D'05: 2677 \| PC'04: 4605 \| PC'02: 7691,9092,1250

Aug 13, 2004, 09:24 PM	Thread Starter #13
Vampyromaniac confutatis maledictis Join Date: May 2002 Location: somewhere dark Posts: 5,974 Rep Power: 77 System Specs	if you don't have JBOD, then it's not doing that then, but treating is as a 1-drive array like my friend. but it doesn't matter anyway, same end result. __________________ *Digitalis 3.3* Athlon 64 3000 // ASUS K8V SE Deluxe // 1024MB PC3200 (2-2-2-10 1T) ATI All-In-Wonder 9700 Pro // 20" Dell 2005FPW (DVI) M-Audio Revo 7.1 + Philips Acoustic Edge // Klipsch ProMedia 2.1 320/16 Western Digital WD3200KS + 120/8 Seagate 7200.7 NEC ND-3550A 16x DVD±RW + Lite-On 52x24x CD-RW Antec Sonata case // 480W Antec TruePower personal bests \|\| Aq'3: 46796 \| 3D'01: 20461 \| 3D'03: 6336 \| 3D'05: 2677 \| PC'04: 4605 \| PC'02: 7691,9092,1250