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2
votes
1answer
95 views

Is my server toast?

Last night I received an e-mail from mdadm about the possible failure of two drives on my array. The raid array was set up as a 4 2TB drive raid5 with one hot spare. Is this system truly fried? Did ...
0
votes
1answer
1k views

Linux software RAID60: Can I have global hot spare?

As far as I can see Linux has RAID6 and RAID0, but not RAID60. So RAID60 is emulated by creating RAID0 on top of some RAID6s. It is possible to add a hot spare to each of the RAID6s, but is it ...
4
votes
2answers
4k views

What is a “hot spare” on FreeNAS?

What is a "hot spare" with regard to ZFS RAIDZ on FreeNAS? I'm hoping that it means an extra, attached disk that can automatically take over for a failed disk in the RAID ... ? If so, how do I set ...
2
votes
2answers
994 views

Using the spare drive in an HP Proliant DL380 G4

I have an HP Proliant DL380 G4 with a Smart Array 6i controller and 6 hard drives. 5 of the drives are configured as a RAID 5 array, and 1 is designated as a hot spare. The server has just given me a ...
0
votes
1answer
447 views

Why can't add a hot spare in freebsd? Can anybody help me fix it?

Why can't add a hot spare? # mfiutil add e1:s1 mfid0 mfiutil: Drive 1 is not available I found the reason is e1:s1 is marked online, it must be Marked as an unconfigured good drive, and to mark ...
1
vote
2answers
2k views

Two failed disks in a RAID 10 Array. One hot-spare, active. What's the replacement sequence?

Given a hot-swappable 15 spindle RAID 10 array with two failed disks. There is one global hot spare, and it is actively "sparing" the first of the two failed disks. The array is running, but has no ...
0
votes
2answers
6k views

How do I add a Hot Spare for all my Raid Groups in Navisphere 6?

Do you know how to set a free disk (big enough to be a member of all RAID groups) to be a "Hot Spare" available to all RAID groups in a Clariion CX3-20 using Navisphere 6? I have created a RAID group ...
2
votes
2answers
569 views

Regarding active/passive failover, what utilities exist?

I am about to configure two Nagios servers with one being a hot-standbye or failover unit. It will periodically check the active Nagios server and will need to steal its IP addresses in the case of ...
5
votes
7answers
9k views

Raid 5 with hot spare or RAID 10 with no hot spare?

Yes, this is on of those "do my job for me" questions, have some pity:) I'm at the limit for what I can do with the number of hard drives in a server without spending a substantial amount of money. ...
3
votes
1answer
869 views

Using a global hot spare to protect arrays built with disks of different sizes?

I'm trying to put together a drive configuration. I've got a server with 2 x 146GB SAS drives, and am adding several 300 GB drives. Due to limitations on the number of drives I can put in this ...
7
votes
5answers
839 views

For a server that can tolerate downtime, is it better to use a hot spare or a cold spare?

In other words, should I leave a spare disk on the shelf or set it up as a hot spare? If the server has a little bit of downtime, it isn't the end of the world. It's not a webserver or anything that ...