Solved

IBM SCSI hard disk

Posted on 2004-03-24
6
293 Views
Last Modified: 2010-04-13
hi, all

my server have four slots, i used have 2 IBM SCSI 36.7GB.(IBM Ultrastar 80pin 160 10000RPM)

Recently I ordered another two IBM SCSI disk, it said 36GB...(after i received it, i found "IBM Eserver 80pin 160 10000RPM")

After i start the server into array setup , it shows..2 of 36.4GB, another 2 is 36.7GB.

1)Could this four SCSI disks could be set into RAID-5? Does it requires all Independent  disk to be the same size?

2)If i have 4 disks into RAID-5, what will be the total size? how to allocate to different partitions...like c: xxGB...D:xxGB...
BTW, win 2k server will be installed.

3) it says 'hot-swap'...is that means i could pull the SCSI disk out without turing off the power?
0
Comment
Question by:robinyanwang
  • 4
  • 2
6 Comments
 
LVL 40

Accepted Solution

by:
Fatal_Exception earned 500 total points
ID: 10672993
Ok..  

1..Yes you can use the 4 disks in a RAID 5 array..  it will use the smaller of the disk space to create these..

2.  The total size of a RAID 5 is the combination of the drives - one..  so you will have approx. 108 Gb's of space available..

3.  correct..  hot swap means exactly that..  It can be swapped out on the fly, if a disk goes bad..  

That being said, if you make one of the disks a hot swap drive, then you will only have 3 disks in the array, for a total of approx. 72 Gb's of space..

FE
0
 
LVL 40

Expert Comment

by:Fatal_Exception
ID: 10672998
Oh..  you can create volumes (partitions) within windows after the OS loads...  I tend to like to use 10-15 GB's for my system partition, and then create other partitions as you deem necessary for your file structure..  
0
 

Author Comment

by:robinyanwang
ID: 10673291
Very good!

I use Four 36.4GB....total is 104,143MB

I use Three 36.4GB and One 36.7GB....total is 104,143MB also

The hot swap is very cool.

Thanks a lot!!!
0
Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

 
LVL 40

Expert Comment

by:Fatal_Exception
ID: 10673313
Not quite sure about your last comment..   Remember that if you put 3 disks in a RAID 5 array, you will basically have only 2/3 of the total disk space available..  1/3 of the space is used for recovery purposes or what we call parity protection..   If you Google for RAID 5 you will find an abundance of info on these...

Glad to see we could help..   if you run into trouble, come on back and ask...

Thanks..

FE
0
 

Author Comment

by:robinyanwang
ID: 10673345
you did not read very clearly...:)

I mean use 4x36.4GB or 3x36.4GB+1x36.7GB, the total RAID-5 size is the same...

Have a good night.
0
 
LVL 40

Expert Comment

by:Fatal_Exception
ID: 10673649
Ok..  thanks again, and a good week to you to...

FE
0

Featured Post

NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

NTFS file system has been developed by Microsoft that is widely used by Windows NT operating system and its advanced versions. It is the mostly used over FAT file system as it provides superior features like reliability, security, storage, efficienc…
The business world is becoming increasingly integrated with tech. It’s not just for a select few anymore — but what about if you have a small business? It may be easier than you think to integrate technology into your small business, and it’s likely…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

828 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question