RAID 0+1 or 5?

[Guest]

I just retired my P4 2.53ghz and built a Dual Core HT Intel 840EE 3.2ghz rig.
I don't see much performance increase and maybe some slow down in certain
cases.
I am using the Intel 82801 SATA RAID controller with 3 WD Raptor 10,000 RPM
hard drives in a RAID 5 config. Would my system run faster with RAID 0+1? I
realize RAID 0 is pure speed but I want some fault tolerance. I notice in
Windows disk manager it says NO for fault tolerance. I don't know what to do
for best performance and realiability.

Thanks for any help o suggestions.

 

[Yves Leclerc]

I just retired my P4 2.53ghz and built a Dual Core HT Intel 840EE 3.2ghz rig.
I don't see much performance increase and maybe some slow down in certain
cases.
I am using the Intel 82801 SATA RAID controller with 3 WD Raptor 10,000 RPM
hard drives in a RAID 5 config. Would my system run faster with RAID 0+1? I
realize RAID 0 is pure speed but I want some fault tolerance. I notice in
Windows disk manager it says NO for fault tolerance. I don't know what to do
for best performance and realiability.

Thanks for any help o suggestions.

Most built-in SATA RAID port will not do RAID 5. For most RAID 5 setups, your
will need ODD number of hard drives (minimum of 3 to start with.) As with
most RAID set ups, these will always be a bit slower than the normal set ups.
Hardware RAID will be faster that the Software RAID.

 

[Bob Willard]

I just retired my P4 2.53ghz and built a Dual Core HT Intel 840EE 3.2ghz rig.
I don't see much performance increase and maybe some slow down in certain
cases.
I am using the Intel 82801 SATA RAID controller with 3 WD Raptor 10,000 RPM
hard drives in a RAID 5 config. Would my system run faster with RAID 0+1? I
realize RAID 0 is pure speed but I want some fault tolerance. I notice in
Windows disk manager it says NO for fault tolerance. I don't know what to do
for best performance and realiability.

Thanks for any help o suggestions.

RAID0+1 gives performance and reliability, but requires 4 or more HDs.

I don't know if the 82801 supports RAID0+1 or RAID1+0. If your MB supports
it, you might create a pair of RAID0 sets (2 HDs each), and then let XP
build a RAID1 set from the pair of RAID0 sets; or RAID0 on top of RAID1,
depending on what XP can do. Software RAID, for RAID0 or RAID1, should
perform well (assuming the implementation is well done); software RAID5,
on the other hand, kinda sucks.

 

[Leythos]

I just retired my P4 2.53ghz and built a Dual Core HT Intel 840EE 3.2ghz rig.
I don't see much performance increase and maybe some slow down in certain
cases.
I am using the Intel 82801 SATA RAID controller with 3 WD Raptor 10,000 RPM
hard drives in a RAID 5 config. Would my system run faster with RAID 0+1? I
realize RAID 0 is pure speed but I want some fault tolerance. I notice in
Windows disk manager it says NO for fault tolerance. I don't know what to do
for best performance and realiability.

Thanks for any help o suggestions.

RAID 1+0 is as FAST option (of RAID), and is also easier to recover than
RAID 0+1.

Take a look on the net for the difference.

 

[Kerry Brown]

I just retired my P4 2.53ghz and built a Dual Core HT Intel 840EE
3.2ghz rig. I don't see much performance increase and maybe some slow
down in certain cases.
I am using the Intel 82801 SATA RAID controller with 3 WD Raptor
10,000 RPM hard drives in a RAID 5 config. Would my system run faster
with RAID 0+1? I realize RAID 0 is pure speed but I want some fault
tolerance. I notice in Windows disk manager it says NO for fault
tolerance. I don't know what to do for best performance and
realiability.

Thanks for any help o suggestions.

Almost all on board RAID controllers use a significant amount of CPU
overhead. For the absolute best performance you need a third party RAID
controller with it's own CPU. They are expensive. They also may require a
better motherboard. The faster ones require a 64-Bit/133 MHz PCI-X slot.

Kerry

 

[Guest]

Thanks for the advice. The last time I tried RAID 0 my system was flacky. I
am using Gigabyte motherboards and from all I have found like you all
mention, the software RAID is lacking.

Thanks again

 

[Bob Willard]

Most built-in SATA RAID port will not do RAID 5. For most RAID 5 setups, your
will need ODD number of hard drives (minimum of 3 to start with.) As with
most RAID set ups, these will always be a bit slower than the normal set ups.
Hardware RAID will be faster that the Software RAID.

RAID5 uses N+1 HDs as a RAIDset -- N HDs for data and 1 for parity.
While the
minimum practical number of HDs for RAID5 is 3, any properly implemented
RAID controller should support both even and odd numbers of HDs.