Raid 1 with hot spare on HP 150 ML G3 server

[sbee]

Hello Friends,

I have a HP ML 150 ML G3 Server. it came with a SAS / SATA Controller.

I installed the system with 3 drive As follow:
Bay 1: 500GB SATA Primary RAID1
Bay 2: 500GB SATA Secondary RAID1
Bay 3: 500GB SATA Hot Spare

My question:
1. what is the real purpose of having Hot Spare?
2. If one of my RAID fails then i can only recreate the array from SAS tool which will have downtime?
3. As i have hot spare will my array will create automatically in hot spare without downtime?
Sorry i am fresh to this server side.

I have configured it but like to know what really meaning of RAID and Hot Spare.

Thanks friends.

[marsh_1]

hi,

your array should rebuild automatically without downtime, the failed disk should be replaced as soon as possible, always ensure you take regular backups to tape to ensure a fallback in case of double disk failure.

hth