Dear all, I'll install Asterisk 1.4 in an IBM xSeries 226 server with four HD's available, using CentOS as the OS. What's the best RAID type recommendation ??? RAID 1 or RAID 5 ??? Regards Alejandro
>From: asterisk-users-bounces at lists.digium.com[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Alejandro Cabrera Obed>Subject: [asterisk-users] Asterisk and RAID>Dear all, I'll install Asterisk 1.4 in an IBM xSeries 226 server withfour HD's available, using CentOS as the OS.>What's the best RAID type recommendation ??? RAID 1 or RAID 5 ???>Regards>AlejandroNot really an Asterisk question, but in R1 you would only use 2 of your 4 drives; R5 would use 3 out of 4. I use R5 on my Dell boxes.
Alejandro Cabrera Obed wrote:> Dear all, I'll install Asterisk 1.4 in an IBM xSeries 226 server with > four HD's available, using CentOS as the OS. > > What's the best RAID type recommendation ??? RAID 1 or RAID 5 ??? > > Regards > > Alejandro >Either RAID1 with a couple of spare drives or RAID5 across 3 discs with a hot spare. I assume disc capacity is not an issue. If the system supports RAID 6 that would be ideal as you will have two drives and two parity sets so could cope with 2 simultaneous drive failures compared to 1 for raid1 and raid5.
On Wed, Aug 4, 2010 at 11:57 AM, Alejandro Cabrera Obed <aco1967 at gmail.com> wrote:> Dear all, I'll install Asterisk 1.4 in an IBM xSeries 226 server with > four HD's available, using CentOS as the OS. > > What's the best RAID type recommendation ??? RAID 1 or RAID 5 ???Not really an asterisk question. Asterisk will run well regardless of what you choose.
On Wed, 4 Aug 2010, Alejandro Cabrera Obed wrote:> Dear all, I'll install Asterisk 1.4 in an IBM xSeries 226 server with > four HD's available, using CentOS as the OS. > > What's the best RAID type recommendation ??? RAID 1 or RAID 5 ???RAID-10 If your controller supports it. If not, do it with Linux software RAID. RAID-1 will give you 1 x the drive size with data being written to all 4 disks at the same time, but being read from one - very redundant, but slow writes. RAID-5 will give you 3x your single disk capacity with one disk acting as a parity drive - reasonable performance, but one day you'll lose a drive and then find that a 2nd drive has sector errors when reconstructing the array and it's then game over - unless it's Linux software RAID and you're a guru - which you're not as you'd not be posting this question here. RAID-6 will give you 2x your drive capacity with the ability to survive 2 drive failling - hopefully you can replace one and not have bad sectors on another. RAID-10 will also give you 2x your drive capacity but has more performance than RAID-6. Not really an asterisk question though... Gordon