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Server hotswapping
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Recent Posts

1
Windows / Re: Server hotswapping
Last post by mattbeals -
You most likely have two separate RAID array's there. The top 3 is one array and the bottom three are the second array. Drives in an array are numbered, in your case 0, 1, 2 for each array. I would still find that utility and see which drive it says is bad and then tell it to blink just so you know for sure the one that is lit up is the same one that blinks and is the bad one.

If you can't find the utility you can usually reboot the server and then watch the screen. There should be a RAID setup and telling you what keys to push to enter it when it is going through the boot process and you can do the same thing from it as you can from the RAID utility within Windows.

If you have two different sets of drives then you have two different arrays. You probably have this RAID controller: Smart Array P400i ( http://h18000.www1.hp.com/products/quickspecs/archives_division/12400_div_v3/12400_div.html ) There's a web management tool for the RAID controller, this might be compatible with yours: http://h20564.www2.hpe.com/hpsc/swd/public/detail?swItemId=MTX_4effd70562304a50b3be5c4b96

On the HP Proliants that I had the RAID controllers would detect the new drive and start rebuilding the array automatically. No manual intervention needed.
2
Windows / Re: Server hotswapping
Last post by mattbeals -
I'll look for that drive utility, but it's lit up, anyway.

I've physically flagged it, and I'll get compadre to check. I'm not doing this alone.
haven't dismissed the idea of getting in-house Co IT guy to come up and do it, (we're out on the fringes of suburbia; our parent company in the centre). If stuff goes wrong, he can at least do more than I ever could.

Pic is conveniently outa focus so you can't see the dust.

The bottom 3 are the 72.8 sys RAID. Top 3 are the 146 x 3 genstore/job data RAID. Only about6~8 weeks to go, but Mr Murphy would not give a flying fuck about that. In fact he may even quite enjoy watching stuff fail.

Oh, that's right... it's what he likes to do, isn't it.

The drive is a 'perfect match', AFAICPT, to the ones in the array.

Oh, and thanks for the input...

Dude... Seriously??? I can see the dust bunnies coming out between the drives and the blanks even though it's out of focus. You need to get that thing cleaned ASAP before you have more problems. The heat will kill the components, fans or power supply first. You really need a PM cycle on that. Since you don't have room in the drive cage for any spares I'd suggest you order an extra 72GB and 146GB (or two) drives just in case.
3
Windows / Re: Server hotswapping
Last post by Joe -
You most likely have two separate RAID array's there. The top 3 is one array and the bottom three are the second array. Drives in an array are numbered, in your case 0, 1, 2 for each array. I would still find that utility and see which drive it says is bad and then tell it to blink just so you know for sure the one that is lit up is the same one that blinks and is the bad one.

If you can't find the utility you can usually reboot the server and then watch the screen. There should be a RAID setup and telling you what keys to push to enter it when it is going through the boot process and you can do the same thing from it as you can from the RAID utility within Windows.
4
Thanks anyhoo.
5
Windows / Re: Server hotswapping
Last post by frailer -
I'll look for that drive utility, but it's lit up, anyway.

I've physically flagged it, and I'll get compadre to check. I'm not doing this alone.
haven't dismissed the idea of getting in-house Co IT guy to come up and do it, (we're out on the fringes of suburbia; our parent company in the centre). If stuff goes wrong, he can at least do more than I ever could.

Pic is conveniently outa focus so you can't see the dust.

The bottom 3 are the 72.8 sys RAID. Top 3 are the 146 x 3 genstore/job data RAID. Only about6~8 weeks to go, but Mr Murphy would not give a flying fuck about that. In fact he may even quite enjoy watching stuff fail.

Oh, that's right... it's what he likes to do, isn't it.

The drive is a 'perfect match', AFAICPT, to the ones in the array.

Oh, and thanks for the input...
6
Windows / Re: Server hotswapping
Last post by Joe -
If it's a hot swap drive system AND it's RAID5 (hardware or software doesn't matter) AND you swap the correct drive, the RAID array will automatically rebuild itself.

IF you pull the wrong drive, well I hope you have a good and recent backup.

Very good point. That is why you need the raid utility. You can tell it to make the light blink on the bad drive so you are sure you are pulling the right one. As Matt said....if you pull the wrong drive your day is going to get a lot worse.
7
Windows / Re: Server hotswapping
Last post by mattbeals -
If it's a hot swap drive system AND it's RAID5 (hardware or software doesn't matter) AND you swap the correct drive, the RAID array will automatically rebuild itself.

IF you pull the wrong drive, well I hope you have a good and recent backup.
IF you replace the dead drive with a larger drive you will loose the drive capacity beyond what the other drives have.
IF you have a free drive slot AND a compatible RAID controller you should add a 4th drive as a "hot spare" so that you reduce the likelihood of running in "degraded" mode like you are now.

I've never had a RAID 5 die on me except for the time when someone pulled the wrong drive. That was bad. Very bad... Always have a RAID configuration that includes a hot spare. Not a cold spare, but a hot spare. In the even a drive fails you'll be glad the hot spare was there. And always be sure that the replacement drive is the same RPM as the old drive. I've seen guys replace 15k RPM disks with 10k RPM disks. The array slows down, not what you want.
8
Windows / Re: Server hotswapping
Last post by DigiCorn -
I once had an issue with a Hot Swappable RAID-5. I made the boss do it. Immediately on pulling the drive, it killed the server. The RAID-5 never lived again. Luckily, everything was backed up, and we actually had pre-ordered a new server that was sitting and waiting. But it wasn't MY fault.
9
Windows / Re: Server hotswapping
Last post by Farabomb -
I'm with Joe. The drive has to match or you're asking for trouble. Can you get away with a larger one? yes but you're throwing away the extra space and the RAID only will see it as the same size as the existing array.
10
Windows / Re: Server hotswapping
Last post by Joe -
Well that sounds like BS to me. If it is hot swappable and my guess is that it is it should rebuild once you replace it. If it is not hot swappable when you put it in it will basically become a drive that is unused.

Somewhere in your server their should be some kind of HP ProLiant Array Configuration Utility that might be helpful to look at. You can see which drive is bad and it should tell you if the drives are hot swappable and then it should show that it is rebuilding once you replace the drive. Also you really should make sure that drive you are buying is the same model and size as the other drives.