• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

SCSI Raid Setup

K

Kilrsat

Golden Member
I'm looking at setting up a 2.0TB scsi storage array, 14 x 146 GB drives. Its use will be for storing a very large number of 40-50mb images, and basically I'm asking what RAID format would be best in this type of situation.

In the past we've used RAID 5 on some arrays, and RAID0+1 on others. Mainly looking at balancing speed and total capacity as we do need as much usable storage space as possible, but a very large chunk of slow space isn't useful either.

Thanks for any advice in advance.
 
check emc/dell (rebadged emc)

I have a few on san fibre array.. whats your budget

I have the seagate baracudda 180 x 10. These are not fast since I had these for over 2 years now.
They're 7200rpm w/8 meg cache.

Wtih a SAN fibre array, you can have your 14x146 drive. But you'll lose 1/4 for your raid parity so for 2 tb, you'll need at least 18-22 drives.

Do you want one big partition or do you want several smaller volumes ?

san array for 2 tb are going up to 30,000 with fibre switches and other. Your alternative is to get a 4 channel scsi adapter raid

each channel host 7x146 drive x 2 channel = 876 after raid 5 or 1022 before
or use 5x146 / channel x 4 channel = 584 after raid 5

using 4 channel scsi is far cheaper than the san array. I looked at both solutions. SAN solution allows you to use fault tolerence between 2 server for clustering. Since you have that much storage, another pc for clustering must be affordable since it's cheapper than storage.


 
We're looking at a Dell PowerVault 220S with 146GB 10,000 rpm drives, since we've been pleased with our current PowerVault with 14x73GB but we just need more space.

Basically that's the hardware we're getting, but its just how we want to set it all up. I think our last array ended up being RAID0+1 (they set it up while I was on vacation, so I'll have to double check the details) but we're hoping not to lose half the storage space to redundancy in this one, but don't want to sacrifice too much in the speed department either.
 
I benched my 180 gb for 4 days while burning it in.

I did 3 drive raid 5 all the way up to 10 drive. after 4-5 drives, performance hasn't increase and a few times, it might have slightly decrease.

dont drool.. spend the cash.. i got half a tb at home already in 1 system... total around 800 ish between 4 pcs.

My total work between 3 sites have about 4.5 tb. hehe.. as you can tell, backup is a NIGHTMARE !
 
Okay, I must drool. Although I have a single channel SCSI RAID card (U2W), I lack the cash to get drives fast enough to bother 🙂


If you're looking for more effecient space usage, RAID 5 is definately a better bet. And is the RAID setup single channel or multichannel? It will matter as reading/writing multiple drives in a multiple channel RAID array can happen concurrently.
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top