• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 1051
  • Last Modified:

How to resolve a failed drive.

How to resolve a failed drive in a CX 500 with a raid 5  and how do i verify that hotspare has rebulit in Navisphere?
What do i if hotspare does not rebuilt?
The arrary is connected to a W2K3 host.  
0
Ruben_Ramirez
Asked:
Ruben_Ramirez
  • 5
  • 2
1 Solution
 
Duncan MeyersCommented:
Firstly, if the drive is completely dead, you'll have an orange light on the affected cabinet and on the affected disc, The disc with the light is the dead one. You pull it out and pop the new one in and the CX500 will equalize without you having to do anything else. If the disc is failing (soft SCSI errors, fibre back-end loop errors etc) you probably won't have an orange light on the disc/cabinet. Right click on SPA and SPB and select Events. Scroll down through the events until you find what you're looking for. Errors show a red blob, warnings a yellow blob and informational are blue blobs in the left hand column of the event viewer.

To check the state of the host spare, expand out Unowned LUNs in Navisphere, find your hotspae, right click on the LUN and select Properties. You'll see an entry that says something like "Hotspare replacing 1-0-7" whioch indicates that the host spare is replacing the disc 7 on bus 0 in cabinet 1. That will clear when the equalize completes. The EMC/Unisys guy that replaces the disc will be able to take you through all that.

What do you do if the hotspare does not rebuild? *****Extremely***** unlikely. But if it happens (and I've never heard of it, let alone seen it) call EMC.

0
 
prof666Commented:
actually 1-0-7 would be bus 1 encl 0 disk 7.
If hotspare doesn't rebuild it normally means that you might have a bug with an ndu code upgrade that hasn't been successfully commited. The only time I have seen a HS failure (and I have done close to 100 installs of CX200 - 700) is a partial failure to to bugs in write intent logging used for mirrorview. This required me to hunt down the presise disks used for the private luns (write intent devices), power down the box, remove these disks, boot backup, go into the internal OS via symmremote and clear some memory registers, re-insert the disks online, restart again, then replace the dead disk. Not something you want to be doing at 3am, without tech support. So in answer to your question ...it never really happens in practice.
0
 
Duncan MeyersCommented:
>actually 1-0-7 would be bus 1 encl 0 disk 7.

Whoops. I'd better hand my badge back....

:-)
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
prof666Commented:
Always screws my head up when writing out big lists of disks for RAID groups...0_0_0,0_0_1,0_0_2 etc...easy to get all mixed up.  :)
0
 
Duncan MeyersCommented:
And why, why, why, why, why show them in Navisphere in Bus, Enclosure order? Drives me bonkers.
0
 
Duncan MeyersCommented:
Hi Ruben_Ramirez,

Did you get the drive replaced OK?
0
 
Duncan MeyersCommented:
I think I covered that one off nicely... points, please!
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

  • 5
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now