Raid 0 stripe size


 
Thread Tools Search this Thread
Operating Systems Linux Raid 0 stripe size
# 8  
Old 08-25-2009
Also, please tell me that your "backups" are also going to another spot other than just a RAID 5 set.

Yes, 32-64K would be good for non sequential (sequential would be something like linear video or audio files). 128K would possibly be ideal if your files are greater than 8MB on average.

However, as others have stated, RAID 0, while improving performance, will actually increase the likelihood of failure from even having 1 drive.
# 9  
Old 08-25-2009
Quote:
Originally Posted by mark54g
Also, please tell me that your "backups" are also going to another spot other than just a RAID 5 set.

Yes, 32-64K would be good for non sequential (sequential would be something like linear video or audio files). 128K would possibly be ideal if your files are greater than 8MB on average.

However, as others have stated, RAID 0, while improving performance, will actually increase the likelihood of failure from even having 1 drive.
yup my "backups" are going into a external 1.5TB... I dont think the OS files are larger than 8MB.. So i guess 32k would be ideal?? i can go as low as 4k
# 10  
Old 08-25-2009
Quote:
So i guess 32k would be ideal?
Rather than ideal, I would say sufficient for what you are trying to do. Don't stress too much over that detail. You're striping across 3 drives. Ought to be fast.
# 11  
Old 08-25-2009
Quote:
Originally Posted by Radar
Rather than ideal, I would say sufficient for what you are trying to do. Don't stress too much over that detail. You're striping across 3 drives. Ought to be fast.
32K it is then Smilie thanks Smilie

---------- Post updated at 11:03 AM ---------- Previous update was at 11:03 AM ----------

and for my raid 5 im using 128 Smilie
# 12  
Old 08-25-2009
You may also want to set, depending on your RAM, a read ahead of say 4MB or more as well as a stride in the file system that matches your work pattern.
# 13  
Old 08-25-2009
Quote:
Originally Posted by mark54g
You may also want to set, depending on your RAM, a read ahead of say 4MB or more as well as a stride in the file system that matches your work pattern.
i have 8gb of ram... Not sure what u mean
# 14  
Old 08-25-2009
Are you running 64-bit debian? Why?
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