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cabinboy said:

> IN RAID 0 also called striping the data is written in chunks to both disks at
> the same time but not the same data, let's say that you have the disc
> partitioned in 4K clusters when you have a file let's say 40K then RAID 0
> writes 4k to one HD the next to the other until all 40K are split onto both
> drives. The advantage of this is that the data is writen in half the time,
> HDs are the only mechanical elements of a PC so they are the slowest link in
> data transfer. The disavantage of Stripping is that if you loose one HD you
> loose all the data although some may be recovered through the parity bit.
> In RAID 0, 2 HDs of 100G each gives you a total capacity of 200G
>
> RAID 1 is called mirror, the same data is written to both drives, speed is not
> increased but each drive has the same data so you loose one you still have the
> data. 2 HD of 100G each = 100G since both must hold the same amount of data.
> RAID 0+1 is a combination of both but you need 4 HD to do that.
> And JBOD RAID doesn't have the RAID function, it just combines all HDs to look
> as one big one.
> Good luck!
>

I haven't seen anyone say that 24 is the maximum number of drives and/or
partitions ( C - Z )


>
>
>
> On Tue, 30 Dec 2003 22:34:50 GMT, why? <fgrirp*sgc@VAINY!Qznq.fpvragvfg.pbz>
> wrote:
>
>>
>> On Tue, 30 Dec 2003 20:56:44 +0000 (UTC), Lee Davison wrote:
>>
>>> Im not a technical mind. Ive read the RAID review and im still not sure what
>>> it is. Frankly it doesnt matter what it is if it lets me add a couple more
>>
>> Ok, and it does matter.
>>
>> RAID 0 , stripe spreads the data / files etc across 2 physical disks. So
>> if you had 2 x 20GB drives, a RAID 0 of 2 x 20Gb appears as 1 x 40GB.
>>
>> If one drive fails, all data is lost. This is becasue 1 file is written
>> in chunks to both disks. Lose 1 disk and parts of the file vanishes.
>>
>> RAID 1 , mirror using 1 x 20 GB and 1 x 30GB ( not using 20 and 20 to
>> show another point ) this looks like 50GB however it doesn't work that
>> way. RAID 1 is a 'mirror' copy of the disk, as you can't mirror 30GB
>> onto 20 the RAID is setup as 20GB. The next trick is you have 1 live
>> disk and the mirror.
>>
>> So the upshot is you put in 50GB, created a 20GB mirror and that's it
>> your 2 drives appear as 20GB only. You lost 10GB you can't use and 1
>> drive of 20GB as it's the copy.
>>
>> The redundancy here is if 1 drive fails, all it should involve is taking
>> the dud out, and replacing it if it's the mirrored destination. The
>> controller will recreate the mirror.
>>
>> If it's the primary drive that failed you take out the primary and swap
>> the drive jumpers around to make what was the slave disk the master. You
>> then replace the other disk later.
>>
>>> hard drives which is all im after. Theres 2 blank ports on the motherboard
>>> labelled raid. Can I get an IDE cable and install my new hdd into one of
>>
>> Your motherboard (see the manuals) let you set IDE3/4 to RAID or ATA. If
>> you want to add drives without RAID , use the ATA setting, get the
>> correct ATA133 cables and make sure your drives are ATA133 types.
>>
>>
>> On the PDF version of the manual mentioned earlier.
>> PDF page 43, printed page 37, see the settings for IDE3/4 and ATA
>> setting in the BIOS.
>>
>>> these? I would also like to get my cd rom back online.
>>> At the momont I have 3 hdd and a cd burner attached. I would like to get to
>>> the stage where I have 4 hdd, a cd burner and my cd rom back. Im not too
>>
>> You have to check if the drive you want to move is ATA133 and you need
>> to get an ATA133 cable. Then enable the IDE3/4 and connect the cable /
>> hdd.
>>
>>> concerned if i cant get the 4th hdd online, but id like the cdrom back so i
>>> can copy disc to disc.
>>
>> Basically that's it without actually doing it for you.
>>
>> Check you have enough power plugs free as well, if you don't you need a
>> power splitter cable.
>>
>> Part codes below are from www.maplin.co.uk
>>
>> image - http://www.maplin.co.uk/media/largeimages/10951i0.jpg
>> part code DG43W , for 2 way.
>>
>> image - http://www.maplin.co.uk/media/largeimages/32406i0.jpg
>> part code A26AB, for 3 way.
>>
>> or maybe an extension if you have a free power plug and it's not long
>> enough.
>> http://www.maplin.co.uk/media/largeimages/32407i0.jpg
>> part code - A27AB
>>
>> Me
>
> Visit http://www.my-forums.com

On Wed, 31 Dec 2003 07:05:47 GMT, cabinboy wrote:

>IN RAID 0 also called striping the data is written in chunks to both disks at
>the same time but not the same data, let's say that you have the disc
>partitioned in 4K clusters when you have a file let's say 40K then RAID 0 writes
<snip>
>
>RAID 1 is called mirror, the same data is written to both drives, speed is not
>increased but each drive has the same data so you loose one you still have the
<snip>

Um.... I thought I just said that and also posted a couple of links to
sites explaining RAID earlier in the thread. Maybe you meant to tell
someone else?

>
>
>
>On Tue, 30 Dec 2003 22:34:50 GMT, why? <fgrirp*sgc@VAINY!Qznq.fpvragvfg.pbz>
>wrote:
>
>>
>>On Tue, 30 Dec 2003 20:56:44 +0000 (UTC), Lee Davison wrote:
>>
>>>Im not a technical mind. Ive read the RAID review and im still not sure what
>>>it is. Frankly it doesnt matter what it is if it lets me add a couple more
>>
>>Ok, and it does matter.
>>
>>RAID 0 , stripe spreads the data / files etc across 2 physical disks. So
>>if you had 2 x 20GB drives, a RAID 0 of 2 x 20Gb appears as 1 x 40GB.
>>
>>If one drive fails, all data is lost. This is becasue 1 file is written
>>in chunks to both disks. Lose 1 disk and parts of the file vanishes.
>>
>>RAID 1 , mirror using 1 x 20 GB and 1 x 30GB ( not using 20 and 20 to
>>show another point ) this looks like 50GB however it doesn't work that
>>way. RAID 1 is a 'mirror' copy of the disk, as you can't mirror 30GB
>>onto 20 the RAID is setup as 20GB. The next trick is you have 1 live
>>disk and the mirror.
>>
>>So the upshot is you put in 50GB, created a 20GB mirror and that's it
>>your 2 drives appear as 20GB only. You lost 10GB you can't use and 1
>>drive of 20GB as it's the copy.
>>
<snip>

Me

On Wed, 31 Dec 2003 07:12:53 -0000, Brian H¹© wrote:

>cabinboy said:
>
>> IN RAID 0 also called striping the data is written in chunks to both disks at
>> the same time but not the same data, let's say that you have the disc
>> partitioned in 4K clusters when you have a file let's say 40K then RAID 0
>> writes 4k to one HD the next to the other until all 40K are split onto both
>> drives. The advantage of this is that the data is writen in half the time,
>> HDs are the only mechanical elements of a PC so they are the slowest link in
>> data transfer. The disavantage of Stripping is that if you loose one HD you
>> loose all the data although some may be recovered through the parity bit.
>> In RAID 0, 2 HDs of 100G each gives you a total capacity of 200G
>>
>> RAID 1 is called mirror, the same data is written to both drives, speed is not
>> increased but each drive has the same data so you loose one you still have the
>> data. 2 HD of 100G each = 100G since both must hold the same amount of data.
>> RAID 0+1 is a combination of both but you need 4 HD to do that.
>> And JBOD RAID doesn't have the RAID function, it just combines all HDs to look
>> as one big one.
>> Good luck!
>>
>
>I haven't seen anyone say that 24 is the maximum number of drives and/or
>partitions ( C - Z )
>

Why would that matter yet or at all in this thread so far?

>
>>
>>
>>
>> On Tue, 30 Dec 2003 22:34:50 GMT, why? <fgrirp*sgc@VAINY!Qznq.fpvragvfg.pbz>
>> wrote:
>>
>>>
>>> On Tue, 30 Dec 2003 20:56:44 +0000 (UTC), Lee Davison wrote:
>>>
>>>> Im not a technical mind. Ive read the RAID review and im still not sure what
>>>> it is. Frankly it doesnt matter what it is if it lets me add a couple more
>>>
>>> Ok, and it does matter.
>>>
>>> RAID 0 , stripe spreads the data / files etc across 2 physical disks. So
>>> if you had 2 x 20GB drives, a RAID 0 of 2 x 20Gb appears as 1 x 40GB.
>>>
>>> If one drive fails, all data is lost. This is becasue 1 file is written
>>> in chunks to both disks. Lose 1 disk and parts of the file vanishes.
>>>
>>> RAID 1 , mirror using 1 x 20 GB and 1 x 30GB ( not using 20 and 20 to
>>> show another point ) this looks like 50GB however it doesn't work that
>>> way. RAID 1 is a 'mirror' copy of the disk, as you can't mirror 30GB
>>> onto 20 the RAID is setup as 20GB. The next trick is you have 1 live
<snip>

Me

X-No-Archive: Yes
On Wed, 31 Dec 2003 06:44:38 GMT, cabinboy wrote:

>I have a Gigabyte MB with Giga RAID that I could not get to work so I turn it
>into extra IDEs so now I have 4 HD for a total of 440 GB, a CD burner and a CD
>Rom.

<snip>

>as slave but what to do with the 80G and the 40G? I ended up connecting those to
>the IDE3 connector so now I have 4 HD for a total of 440G and yet I still have
>another socket for another cable, IDE4, so I could install 2 more HDs. I won't
>do it but I could, for a total of 8 drives, 6 HD and 2 CD drives. Ever wonder

Only 8 devices, try 10 using a mobo with 2 SATA channels + 8 on IDE1-4
if only the case / PSU was big enough then the SCSI kit from another PC
could be moved over for 13.

<snip>

Me

why? said:

> On Wed, 31 Dec 2003 07:12:53 -0000, Brian H¹© wrote:
>
>> cabinboy said:
>>
>>> IN RAID 0 also called striping the data is written in chunks to both disks
>>> at the same time but not the same data, let's say that you have the disc
>>> partitioned in 4K clusters when you have a file let's say 40K then RAID 0
>>> writes 4k to one HD the next to the other until all 40K are split onto both
>>> drives. The advantage of this is that the data is writen in half the time,
>>> HDs are the only mechanical elements of a PC so they are the slowest link in
>>> data transfer. The disavantage of Stripping is that if you loose one HD you
>>> loose all the data although some may be recovered through the parity bit.
>>> In RAID 0, 2 HDs of 100G each gives you a total capacity of 200G
>>>
>>> RAID 1 is called mirror, the same data is written to both drives, speed is
>>> not increased but each drive has the same data so you loose one you still
>>> have the data. 2 HD of 100G each = 100G since both must hold the same
>>> amount of data. RAID 0+1 is a combination of both but you need 4 HD to do
>>> that.
>>> And JBOD RAID doesn't have the RAID function, it just combines all HDs to
>>> look as one big one.
>>> Good luck!
>>>
>>
>> I haven't seen anyone say that 24 is the maximum number of drives and/or
>> partitions ( C - Z )
>>
>
> Why would that matter yet or at all in this thread so far?
>

Because the question in the subject line says "How wany hard drives on one PC"

On Wed, 31 Dec 2003 15:02:10 -0000, Brian H¹© wrote:

>why? said:
>
>> On Wed, 31 Dec 2003 07:12:53 -0000, Brian H¹© wrote:
>>
>>> cabinboy said:
>>>
>>>> IN RAID 0 also called striping the data is written in chunks to both disks
>>>> at the same time but not the same data, let's say that you have the disc
>>>> partitioned in 4K clusters when you have a file let's say 40K then RAID 0
>>>> writes 4k to one HD the next to the other until all 40K are split onto both
>>>> drives. The advantage of this is that the data is writen in half the time,
>>>> HDs are the only mechanical elements of a PC so they are the slowest link in
>>>> data transfer. The disavantage of Stripping is that if you loose one HD you
>>>> loose all the data although some may be recovered through the parity bit.
>>>> In RAID 0, 2 HDs of 100G each gives you a total capacity of 200G
>>>>
>>>> RAID 1 is called mirror, the same data is written to both drives, speed is
>>>> not increased but each drive has the same data so you loose one you still
>>>> have the data. 2 HD of 100G each = 100G since both must hold the same
>>>> amount of data. RAID 0+1 is a combination of both but you need 4 HD to do
>>>> that.
>>>> And JBOD RAID doesn't have the RAID function, it just combines all HDs to
>>>> look as one big one.
>>>> Good luck!
>>>>
>>>
>>> I haven't seen anyone say that 24 is the maximum number of drives and/or
>>> partitions ( C - Z )
>>>
>>
>> Why would that matter yet or at all in this thread so far?
>>
>
>Because the question in the subject line says "How wany hard drives on one PC"

Not counting RAID sets of course where multiple drives appear as 1 drive
letter. Sort of like 32 SCSI disks and a selection of IDE devices.

Me

"cabinboy" <> a écrit dans le message de
news:...
> I have a Gigabyte MB with Giga RAID that I could not get to work so I turn
it
> into extra IDEs so now I have 4 HD for a total of 440 GB, a CD burner and
a CD
> Rom.
> I recommend not to mix a CD and a HD on the same cable, they slow down
> considerably.
> Why so much storage you may ask? well it happend like this:
> I bought a new MB with RAID and the intention of connecting 2 HD, 160G
each
> (they were on sale) RAID drives have to be the identical drives, same size
and
> make.
> I had a 80G and a 40G.
> After many tries I just could not get the frigget GIGA RAID to work, the
> instructions were wrong and windows XP kept comming up with errors like
"NTLDR
> error" etc.
> So, I gave up and decided to just install one 160G as master and the other
160G
> as slave but what to do with the 80G and the 40G? I ended up connecting
those to
> the IDE3 connector so now I have 4 HD for a total of 440G and yet I still
have
> another socket for another cable, IDE4, so I could install 2 more HDs. I
won't
> do it but I could, for a total of 8 drives, 6 HD and 2 CD drives. Ever
wonder
> when would you used more drive letters that A,B,C,D,E and F? now you know,
my
> last letter is I, a memory stick connected to the USB.
> BIOS have to be set to alow the connectors for the RAID to be used as ATA.
> If you don't have a MB with extra IDEs you could always get a PCI
controller and
> connect more HD like that.
> my $0.02
> Good luck and a HAPPY NEW YEAR TO ALL!
>
> Visit http://www.my-forums.com

cabinboy <> wrote in message news:<>. ..
> I have a Gigabyte MB with Giga RAID that I could not get to work so I turn it
> into extra IDEs so now I have 4 HD for a total of 440 GB, a CD burner and a CD
> Rom.

Unless you actually need to have all those in at once, you might
consider getting a hot-swap tray. That would allow you to back up your
system to a second hard drive and stick it in a drawer or box. You
could also use one of the other drives as storage for seldom used
files/data, and incidently keep what is on it safe from viruses,
hackers, etc.

You can also get USB port attachments for the extra hard drives, but
then you'd have the extra clutter in your computer area.

Well, no, I don't really need that many HDs is that I had 2 different ones and then I bought 2 identical new ones with
the idea of setting those 2 new in a RAID 0 configuration that I could not get to work.
I want to note here that there's a limit to the number of HD that you can have, SCSI, IDE, SATA or whatever, and that
makes the project of having many devices almost impossible that limit is the wattage of the power supply.
A HD let's say of 100GB will draw a constant 10 to 15W total on the 5V and 12V supply even when idle, the motor never
stop as long as the PC is on and the HD connected. (the 12V supply is for the motor)
Add to that the motherboard, the video and other cards, the devices, the CPU and all the fans, lights, bells and
whistles and the load on the power supply becomes very critical.
My humble opinion...
See yah!
cabinboy



On 1 Jan 2004 03:28:28 -0800, (Offbreed) wrote:

>cabinboy <> wrote in message news:<>. ..
>> I have a Gigabyte MB with Giga RAID that I could not get to work so I turn it
>> into extra IDEs so now I have 4 HD for a total of 440 GB, a CD burner and a CD
>> Rom.
>
>Unless you actually need to have all those in at once, you might
>consider getting a hot-swap tray. That would allow you to back up your
>system to a second hard drive and stick it in a drawer or box. You
>could also use one of the other drives as storage for seldom used
>files/data, and incidently keep what is on it safe from viruses,
>hackers, etc.
>
>You can also get USB port attachments for the extra hard drives, but
>then you'd have the extra clutter in your computer area.

Visit http://www.my-forums.com

[Computer Administrator tk]

The answer is 8 Hard drives and 2 DVD/CD burners. The way you do this is put in 3 pci cards with 2 SATA hook ups on each card giving you a total of 16 TB in the SATA section and 2 more IDE drives at 500 GB totaling 17 terabytes. Since 1 terabyte equals 1,000 gigabytes that's a total of 17,000 gigabytes on one computer !!! The new SATA has 3 terabytes per drive so if you get those that is a total of 23 terabytes per computer. So 8 Hard Drives and 2 DVD RAM/ burner drives is your answer feasably. Sincerely tk/Computer Administrator