Raid-1 or Raid-5 ? Hardware based or Software based ?

dan99t

Member
Nov 29, 2011
99
3
71
Hi,
I am buying a new Dell T-7500 workstation.
After a Hard Disk crash once, I learned that I need an extra hard disk always ready in case one fails.
Dell is offering either software based Raid -1 OR Hardware based Raid-5 using PERC6/i SAS/SATA Hardware RAID Card with either 3 OR 4 Hard disks.
Specs of system are :
CPU : Intel Xeon E 5645 at 2.4 Ghz
8 GB ECC DDR3 1333 MHz RAM
500 GB SATA 7200 RPM HDDs with either Raid-1 or Raid-5
Windows - 7 Ultimate 64 bit
Currently I clone my HDD using Acronis True Image Home so that I always have an extra HDD ready but it is not in real time so I will still lose some data.
Even if I get a Raid system I still would like to continue cloning the HDD & keep them in remote locations.
My main goal is always having a cloned drive Ready. My concerns are as follows & need advice.
(1) I am not much of a technical person so if anything goes wrong like a Hard disk failure, how difficult would it be to replace the failed HDD & Rebuild the array ?
(2) Would I still be able to clone a HDD as I am currently doing using Acronis software ?
(3) Should I get Hardware based Raid or software based & whether Raid-1 OR Raid – 5 & how many HDDs should I get ( 3 or 4 ) if I get Raid-5 ?
(4) I frequently Fresh Install Windows-7 in Primary Partition & I have 6 partitions. I just format the Primary Partition & Install OS.
It is very easy to do now. But will it still remain same with Raid-1 OR Raid-5 ?
Thank You.
 

imagoon

Diamond Member
Feb 19, 2003
5,199
0
0
What are you trying to accomplish? RAID is not a backup it is a reliability thing. The software vs hardware thing is a performance issue. Most people heading in to the RAID environments keep spare blanks on hand so if a drive fails the array can be rebuilt. Otherwise they backup to tape / external drive nightly.

1) You unbolt the bad disk, bolt the new one in. The controller will start automatically.

2) The PERC6 will present the array as a disk to the computer. As long as your disk imaging can see the controller it is can be treated as any other disk.

3) Hardware is faster, software is slower. Raid 1 requires 2 drives, Raid 5 requires 3 or more. The number above 3 is your choice.

4) see #2