topic Re: eva5k_146Gb_issue in Disk Enclosures

eva5k_146Gb_issue

CSP_ALGERIA — Tue, 10 Aug 2004 08:45:07 GMT

Hello friends,
Two Es80 alphas under Tru64unix share the same
eva5k (2c6d)which contain 38 disks of 146Gb FC.
We are facing a very often disk failure at a
rate of 1 disk/ month.
Firmware update has been done as recommended by
HP with no results.
However ,It is running well with no errors.
Eva first install on 03 ,in prod 04.
Replaced 6 hdd among 38 up to now.
Did someone use eva5k with 146 Gb yet?comments
Is it known issue with known fixes ?
Thanks a lot for your help

Re: eva5k_146Gb_issue

Massimo Bianchi — Tue, 10 Aug 2004 09:35:45 GMT

Hi,
unfortunaly i can confirm this rate, almost a disk every two month rate ;(

But I have 84 disks.

Techs says that failures are frequent in the first two/three months, let's call it assessment...

HTH,
Massimo

Re: eva5k_146Gb_issue

Alzhy — Tue, 10 Aug 2004 10:13:51 GMT

Same here, and it is also occuring on the 73 GB .. a bad firmware on a batch.

In our failures though, the EVA is completely frozen -- that HP ends up rebooting each of the controllers.

The good thing is we have not had a data loss yet -- as HP-UX / VxFS does its thing very well indeed.

Re: eva5k_146Gb_issue

Uwe Zessin — Tue, 10 Aug 2004 12:03:36 GMT

Translated from German it's the 'bath tub curve' (see attachment). Most devices fail at the beginning or the ending of their lifetime.

Re: eva5k_146Gb_issue

Tom O'Toole — Tue, 10 Aug 2004 13:24:54 GMT

Actually, all devices fail at the end of their lifetime (sorry, couldn't resist).

Re: eva5k_146Gb_issue

Uwe Zessin — Tue, 10 Aug 2004 14:40:05 GMT

Oh, sure. Thanks. :-)

Re: eva5k_146Gb_issue

CSP_ALGERIA — Wed, 11 Aug 2004 03:26:29 GMT

Hi ,
Thanks
I feel better , but i'm still waiting for
an answer to WHY this happen. and HOW to fix
regards

Re: eva5k_146Gb_issue

Nagarajan Balakrishnan_1 — Wed, 11 Aug 2004 04:14:11 GMT

Hi,

The same thing happened at our site as well. We looked at the prospect of the "bad batch" of disks as well.

However, after many failures in the first 6 months of implementation, the failures stopped. So we did not pursue further.

One moral of the story: Even if there are multiple failures, wait for the levelling to complete. Sometimes, we had disks failing during the levelling and the levelling happened 2 or 3 times. Only after all the levelling activities stopped, disks to be changed / replaced.

Cheers
Baalki