I have Dell Poweredge T100 server with Dell SAS 6 and two hard disk on RAID 1.
Last week the server died including one RAID 1 hard disk. We sent the server for repair and the problem with PSU was fixed.
We have hardware RAID configured on Sun-Blade-T6320 and one of the disk got failed. Hence we replaced the failed disk. But the hot swapped disk not recognized by RAID.
I have a 5 disk Raid5 array of Western Digital Green (WD10EADS) 1TB. Raid5 is via Windows Server (software raid).
One disk has failed, and it looks as though I can't get the same model replacement. I've also read that the newer (consumer level) WD alternatives will misbehave in a Raid array (TLER issues etc).
The array has been powered up for 29,000 hours (3.2 years).
In the BIOS of an ASUS motherboard I've set up a RAID 1 mirror out of two hard drives. All is working fine at present. I have two OS installed on the machine: Windows Server 2008 R2 and Windows 7.
My question is a general one:
In case of a failure of one of the two hard drives composing the mirror, will I be somehow notified by the system or should I check it myself constantly?
I am currently performing various development tasks that are slow on my current system because of IO performance.
Is there a way to record disk operations while performing IO consuming tasks, including performance info (writes/second, reads/second, etc) and then replay them on a new system to see which would the performance be there (without having to re-run the same command over the same set of
We created a monitoring report for IOPs on performance counters using Disk reads/sec and Disk writes/sec on four servers (physical boxes, no virtualization) that have 4x 15k 146GB SAS drives in RAID10 per server, set to check and record data every 1 second, and logged for 24 hours before stopping reports.
These are the results we got:
Server1 Maximum disk reads/sec: 4249.437 Maximum disk writ
I've installed Ubuntu 12.04.1 in a new server and set up the 4 hard drives with 3 RAID 1 devices, the configuration is such that the first two drives have md0 (swap space) and md1 (/) with the third and fourth drives having md2 (/var).
I've been testing the operation under a drive failure and found that the system boots fine if I remove disk two but if I remove disk one then the system gets to gr
I have a few questions about RAID 5, BBWC (Battery Backed Write Cache), filesystem (ext3) and optionally mysql.
I have a hypothesis and I ask Server Fault community to validate or not this one:
-The system is UP, applications works with database and use transactions
-The RAID system is configured with RAID5,write caching and battery (BBWC)
With this solution, when OS receive write ACK, data ar
Hello
This morning we encountered a failure in our Raid-5 array and the server won't boot. Our datacenter told us the array and the disks need to be replaced as they are damaged.
I'm looking for someone who can help me to get some backups out from this server.