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RAID options and CPU / resource requirements

post #1 of 4

7/26/12 at 8:41am

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railfan844

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I have a system with a 3.4ghz Pentium 4 CPU (1 core/2 threads) and 4gb of DDR2 RAM.

It's going to have 8x80gb HDDs - 2 IDEs on the built in controller, 4 IDEs on a card, and 2 SATAs on the internal SATA controller.

Out of RAID 0+1, 10, 5, and 6, which ones can I run with the current hardware resources? I understand some RAID configurations need large amounts of memory and/or CPU power.
Edited by railfan844 - 7/26/12 at 8:58am

CPU	Motherboard	Graphics	Graphics
Intel Core i5 2500K	P67 Professional	AMD Radeon HD 6950 unlock	NVIDIA GeForce GTX 460 2gb
RAM	RAM	Hard Drive	Hard Drive
G.Skill Ripjaws	G.Skill Ripjaws	Intel X25-V	Seagate Barracuda
Hard Drive	Optical Drive	OS	Monitor
WD Goflex USB 3.0	24x DVD R/W DL	Win7 Ultermate 64	Acer 20in 1600x900
Monitor	Monitor	Monitor	Keyboard
Compaq 20in 1600x900	17in Dell 1280x1024	19in Gateway 1280x1024	Razer Blackwidow mech w/ cherry MX blues
Power	Case	Mouse	Audio
Kingwin LZ-750	HAF 932 + sound activated lights	Logitech G500	Rosewill USB headset
View all

CPU	Motherboard	Graphics	RAM
Pentium 4 3.2ghz w/ HT	HP	Intel IGP	4gb Mushkin DDR2
Hard Drive	OS	Power	Case
80gb sata	WinXP Pro	HP OEM	HP Small form factor
View all

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CPU	Motherboard	Graphics	Graphics
Intel Core i5 2500K	P67 Professional	AMD Radeon HD 6950 unlock	NVIDIA GeForce GTX 460 2gb
RAM	RAM	Hard Drive	Hard Drive
G.Skill Ripjaws	G.Skill Ripjaws	Intel X25-V	Seagate Barracuda
Hard Drive	Optical Drive	OS	Monitor
WD Goflex USB 3.0	24x DVD R/W DL	Win7 Ultermate 64	Acer 20in 1600x900
Monitor	Monitor	Monitor	Keyboard
Compaq 20in 1600x900	17in Dell 1280x1024	19in Gateway 1280x1024	Razer Blackwidow mech w/ cherry MX blues
Power	Case	Mouse	Audio
Kingwin LZ-750	HAF 932 + sound activated lights	Logitech G500	Rosewill USB headset
View all

CPU	Motherboard	Graphics	RAM
Pentium 4 3.2ghz w/ HT	HP	Intel IGP	4gb Mushkin DDR2
Hard Drive	OS	Power	Case
80gb sata	WinXP Pro	HP OEM	HP Small form factor
View all

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post #2 of 4

7/30/12 at 12:48am

terraprime
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Raid 5/6 require a lot cpu power only because of the parity bits it uses to recover lost data. The other two are alot less intense as it speed is more dependent on the speed of the hard drives. If you had a dedicated raid card what cpu would make it less important as long as it had a 16x PCIE version 1.0 you are not using.
Edited by terraprime - 7/30/12 at 12:51am

CPU	Motherboard	Graphics	RAM
intel Core i5 3570k 4.4ghz 1.200v - 0.000 offset	Gigabyte z77X-UP4 TH	Sapphire 7950 3GB @ 1100/1600mhz v1.2	GSkill 2x4gb 1333mhz 7-7-7-21 2T
Cooling	OS
Corsair H80i AIO liquid cooling	Windows 7 Professional x64
View all

CPU	Motherboard	Graphics	RAM
C2Q Q6600 GO @ 3.2ghz 1.28	Gigabyte P35 DS3-L Pencil modded	Nvidia 9800 GT 512mb	2x1gb Gskill 1066 5-5-5-15 & 2x1gb Gskill Pi 80...
Hard Drive	Hard Drive	Optical Drive	Cooling
Crucial m4 CT128M4SSD1 128GB SSD - OS Drive	Samsung HD103UJ & SJ 1 Terabyte HDD	LG 22x DVD burner	Arctic Freezer Pro 2
OS	Monitor	Power	Case
Windows 7 Pro SP1 x64	HannsG 27.5" Widescreen	Red thingy 750w Single rail	old raidmax from 1st build beat to death
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CPU	Motherboard	Graphics	RAM
intel Core i5 3570k 4.4ghz 1.200v - 0.000 offset	Gigabyte z77X-UP4 TH	Sapphire 7950 3GB @ 1100/1600mhz v1.2	GSkill 2x4gb 1333mhz 7-7-7-21 2T
Cooling	OS
Corsair H80i AIO liquid cooling	Windows 7 Professional x64
View all

CPU	Motherboard	Graphics	RAM
C2Q Q6600 GO @ 3.2ghz 1.28	Gigabyte P35 DS3-L Pencil modded	Nvidia 9800 GT 512mb	2x1gb Gskill 1066 5-5-5-15 & 2x1gb Gskill Pi 80...
Hard Drive	Hard Drive	Optical Drive	Cooling
Crucial m4 CT128M4SSD1 128GB SSD - OS Drive	Samsung HD103UJ & SJ 1 Terabyte HDD	LG 22x DVD burner	Arctic Freezer Pro 2
OS	Monitor	Power	Case
Windows 7 Pro SP1 x64	HannsG 27.5" Widescreen	Red thingy 750w Single rail	old raidmax from 1st build beat to death
View all

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post #3 of 4

7/30/12 at 3:37am

MoleStrangler
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If these eight hard disks are blank I would suggests you have a play around with different RAID configurations.

I would not have a RAID set spanning across different interface types like SATA and IDE. I would suspect the RAID set speed would be set to the slowest interface so you're sacrificing the SATA drive performance.

No need for RAID 6, stick with RAID 5 if you need the redundancy. But with the way you have the drives split across three interface cards you could try RAID 5 on the four IDE disks on the single controller. Run some file read/write tests on the empty RAID, then try and fill the RAID set beyond 80% capacity and run the same file tests. Just to see how your CPU copes with the RAID set.

Software RAID 5 sets will use more CPU than memory if you are looking for what to look for!

A hardware RAID card would always be the preferred route, but which would you choose an IDE or SATA RAID card? I have not see dual IDE & SATA RAID cards on the market, actually I haven't dealt with IDE for many years!

post #4 of 4

7/30/12 at 7:45am

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railfan844

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Quote:

Originally Posted by MoleStrangler

If these eight hard disks are blank I would suggests you have a play around with different RAID configurations.
I would not have a RAID set spanning across different interface types like SATA and IDE. I would suspect the RAID set speed would be set to the slowest interface so you're sacrificing the SATA drive performance.
No need for RAID 6, stick with RAID 5 if you need the redundancy. But with the way you have the drives split across three interface cards you could try RAID 5 on the four IDE disks on the single controller. Run some file read/write tests on the empty RAID, then try and fill the RAID set beyond 80% capacity and run the same file tests. Just to see how your CPU copes with the RAID set.
Software RAID 5 sets will use more CPU than memory if you are looking for what to look for!
A hardware RAID card would always be the preferred route, but which would you choose an IDE or SATA RAID card? I have not see dual IDE & SATA RAID cards on the market, actually I haven't dealt with IDE for many years!

Thanks - the IDE card does support RAID, and after reading your post I decided to put the 4 IDE drives that are most closely related in model on that one in RAID 0. Then I'll have a 80gb RAID 1 mirror for more sensitive data, and a single 80gb drive to hold the OS (Win server 2008). This leaves me with an 80gb drive spare, to replace any failed drives and in the meantime bring life to one of my disk-less computers

CPU	Motherboard	Graphics	Graphics
Intel Core i5 2500K	P67 Professional	AMD Radeon HD 6950 unlock	NVIDIA GeForce GTX 460 2gb
RAM	RAM	Hard Drive	Hard Drive
G.Skill Ripjaws	G.Skill Ripjaws	Intel X25-V	Seagate Barracuda
Hard Drive	Optical Drive	OS	Monitor
WD Goflex USB 3.0	24x DVD R/W DL	Win7 Ultermate 64	Acer 20in 1600x900
Monitor	Monitor	Monitor	Keyboard
Compaq 20in 1600x900	17in Dell 1280x1024	19in Gateway 1280x1024	Razer Blackwidow mech w/ cherry MX blues
Power	Case	Mouse	Audio
Kingwin LZ-750	HAF 932 + sound activated lights	Logitech G500	Rosewill USB headset
View all

CPU	Motherboard	Graphics	RAM
Pentium 4 3.2ghz w/ HT	HP	Intel IGP	4gb Mushkin DDR2
Hard Drive	OS	Power	Case
80gb sata	WinXP Pro	HP OEM	HP Small form factor
View all

hide details

CPU	Motherboard	Graphics	Graphics
Intel Core i5 2500K	P67 Professional	AMD Radeon HD 6950 unlock	NVIDIA GeForce GTX 460 2gb
RAM	RAM	Hard Drive	Hard Drive
G.Skill Ripjaws	G.Skill Ripjaws	Intel X25-V	Seagate Barracuda
Hard Drive	Optical Drive	OS	Monitor
WD Goflex USB 3.0	24x DVD R/W DL	Win7 Ultermate 64	Acer 20in 1600x900
Monitor	Monitor	Monitor	Keyboard
Compaq 20in 1600x900	17in Dell 1280x1024	19in Gateway 1280x1024	Razer Blackwidow mech w/ cherry MX blues
Power	Case	Mouse	Audio
Kingwin LZ-750	HAF 932 + sound activated lights	Logitech G500	Rosewill USB headset
View all

CPU	Motherboard	Graphics	RAM
Pentium 4 3.2ghz w/ HT	HP	Intel IGP	4gb Mushkin DDR2
Hard Drive	OS	Power	Case
80gb sata	WinXP Pro	HP OEM	HP Small form factor
View all

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