Raid 0 stripe size


 
Thread Tools Search this Thread
Operating Systems Linux Raid 0 stripe size
# 1  
Old 08-24-2009
Raid 0 stripe size

I have a PERC 5/i card. Im using with it 3 15k rpm HDD's (model: SEAGATE Savvio 15K ST936751SS). Im going to install debian on this array.. and im looking for performance... So what would be the stripe size that i should set this raid 0 into to give me the best performance?

Thanks
# 2  
Old 08-25-2009
In short: don't. RAID 0 gives you no redundancy or fault tolerance. Go with RAID 5 (or maybe RAID 1).

As for the stripe size: Dell suggests 128KB stripes.
# 3  
Old 08-25-2009
I agree with pludi,
Better go for Raid 1 or Raid 5 ( for more usable space)
# 4  
Old 08-25-2009
i do my backups on a raid 5 (3x500gb)... So this perc 5 card, has 3x 36g (15K) hds in raid 0, and a raid 5 of 3x500gb, where my data is going to go. So?? best stripe for raid 0? 128k?

---------- Post updated at 09:47 AM ---------- Previous update was at 07:39 AM ----------

any one?
# 5  
Old 08-25-2009
Quote:
Originally Posted by supermiguel
what would be the stripe size that i should set this raid 0 into to give me the best performance?
What is the nature of your I/O? Predominantly random? Sequential? If you think it's a mix, then go 64K stripe size to split the difference.
# 6  
Old 08-25-2009
Quote:
Originally Posted by Radar
What is the nature of your I/O? Predominantly random? Sequential? If you think it's a mix, then go 64K stripe size to split the difference.
mostly i do a bit of programing, web browsing and word preocessing.. So i guess that would be sequential?
# 7  
Old 08-25-2009
Highly random. Mix read and write. 64K or smaller I would say.
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk or sed or any commands to stripe data

Say i have: g_gateway domain="abc.com" to="123.123.123.123" relay="false" how do i use awk or sed or any method to get the result below: abc.com 123.123.123.123 (3 Replies)
Discussion started by: timmywong
3 Replies

2. Red Hat

RAID Configuration for IBM Serveraid-7k SCSI RAID Controller

Hello, I want to delete a RAID configuration an old server has. Since i haven't the chance to work with the specific raid controller in the past can you please help me how to perform the configuraiton? I downloaded IBM ServeRAID Support CD but i wasn't able to configure the video card so i... (0 Replies)
Discussion started by: @dagio
0 Replies

3. Solaris

solaris volume manager- stripe?

Hello Admins.. I am going through solaris volume manager guide for RAID-0 concatenation and stripes, I do not understand the concept of stripe from following example of concatenation. There is an eample for concatenation: # metainit d25 1 1 c0t1d0s2 d25: Concat/Stripe is setup the... (5 Replies)
Discussion started by: snchaudhari2
5 Replies

4. Solaris

Software RAID on top of Hardware RAID

Server Model: T5120 with 146G x4 disks. OS: Solaris 10 - installed on c1t0d0. Plan to use software raid (veritas volume mgr) on c1t2d0 disk. After format and label the disk, still not able to detect using vxdiskadm. Question: Should I remove the hardware raid on c1t2d0 first? My... (4 Replies)
Discussion started by: KhawHL
4 Replies

5. AIX

SCSI PCI - X RAID Controller card RAID 5 AIX Disks disappeared

Hello, I have a scsi pci x raid controller card on which I had created a disk array of 3 disks when I type lspv ; I used to see 3 physical disks ( two local disks and one raid 5 disk ) suddenly the raid 5 disk array disappeared ; so the hardware engineer thought the problem was with SCSI... (0 Replies)
Discussion started by: filosophizer
0 Replies

6. Emergency UNIX and Linux Support

AIX : Create LV with poor man stripe

Hi all I have just had SAN allocate 4*30 GB of disks and had created a new scalable vg and assigned the disks to it: I used smitty to create vg and the command is: x -y'vgdata1' hdisk82 hdisk83 hdisk84 hdisk85 root@aadcxs08 / : lsvg vgdata1 VOLUME GROUP: vgdata1 VG... (4 Replies)
Discussion started by: hedkandi
4 Replies

7. AIX

AIX striped LV - lslv stripe width has wrong value

Hello all. I have a volume group with 8 PV's, and a logical volume striped across these 8 volumes. However, an lslv is showing: STRIPE WIDTH: 9 STRIPE SIZE: 64k There's really only eight disks, so how can the stripe width be 9? ODM also showed this: # odmget CuAt |... (4 Replies)
Discussion started by: Scott
4 Replies

8. UNIX for Advanced & Expert Users

Resizing veritas mirror-stripe volume

Hi, Is there are any special preocedure for extending veritas mirror-stripe volume? In my case , volume lay out looks as below v test - ENABLED ACTIVE 419430400 SELECT - fsgen pl test-01 test ENABLED ACTIVE 419454720 STRIPE 3/128 RW sd... (0 Replies)
Discussion started by: 2k7.vipin
0 Replies

9. UNIX for Dummies Questions & Answers

MSR magnetic stripe card reader

Hi all I am working on MSR110 ...Can anyone plz tell me how to use the configuration commands with magnetic reader???. Please help me out as i have to develop API in C on linux platform.MSR110 is not responding to the configuration commands. Please help... Regards Mahima (0 Replies)
Discussion started by: mahima_er
0 Replies
Login or Register to Ask a Question