Raid Failure By Sydney Data Recovery NSW

Multi-Disk Raid Data Recovery

Unfortunately, no raid system is ever fully safe. Even with the built-in redundancy and active failover capabilities of most RAID architectures, data loss is still an unfortunate reality for many. That’s where Sydney Data Recovery comes in.

When a RAID array fails, panic can be the first response, but don’t worry – the hardware can be replaced quickly and affordably. Your main concern should be on the valuable data that being stored on the failed drive(s) in need of immediate recovery. The good news is that our trained data recovery & raid specialists can help ensure that you recover the important data you need while your enterprise raid system is being rebuilt.

Understanding Your Multi-Drive Raid Failure

To minimize damages and losses, and maintain as much data integrity as possible, it is extremely important to understand why the failure is happening and what should be done during an array failure – particularly a multi-disk failure. For example, if only one drive fails, the array will continue to allow read and write access to the data, but if a second drive fails on a five drive system, then all of the data on the array could potentially be lost.

There are numerous factors that can cause multi-disk raid systems to fail including:

• Component failure
• Recent firmware changes
• Environmental factors such as heat or water damage
• Vibration
• Power surges & electrical failure
• Viruses
• File corruption

One of the worst things you can do when faced with a multi-disk raid failure is to assume that you can fix the problem yourself by simply resetting or power-cycling the array and hoping that it will clear up the issue. This will often make the problem worse and further jeopardize your data.

http://www.sydneydatarecovery.com.au/multi-disk-recovery.html
02 9437 5755http://www.sydneydatarecovery.com.au/multi-disk-recovery.html

The Ten Tips of Raid Loss Prevention

The Ten Tips of Raid Loss Prevention

1. Schedule regular backups.
2. Perform regular backups.
3. Verify that your backups are functional – we refer to this as a fire drill.
4. Store at least one of the backups somewhere away from the office.
5. Leave your server in an environment free of humidity, dust and smoke.
6. Use power surge protectors.
7. Use anti-virus software and update it frequently to scan and screen all incoming data and emails with attachments.
8. Handle your server with care and protect it from mishandling.
9. Turn off your server if it makes any unusual noises. Do not re-initialise if there is a failure and you are unsure of the nature of that failure.
10. Dissuade both staff and volunteers with good
intentions, but lacking server knowledge, from doing DIY upgrades or trouble shooting - data human error can be unkind to data.

If you have any questions on raid recovery ask - please call in Australia 1800 287 225. ( In Sydney 02 9437 5755 )   ( In Brisbane 07 3283 3303 )

 http://www.sydneydatarecovery.com.au/raid-recovery.htmlhttp://www.sydneydatarecovery.com.au/raid-recovery.html

Raid 1 + 0 - can fail too

Raid 10

You have a failed Raid 10 : Make Sure all drives are numbered and clearly marked

RAID 10 is implemented as a striped array whose segments are RAID 1 arrays

RAID 10 has the same fault tolerance as RAID level 1

RAID 10 has the same overhead for fault-tolerance as mirroring alone

High I/O rates are achieved by striping RAID 1 segments

Under certain circumstances, RAID 10 array can sustain multiple
simultaneous drive failures

Excellent solution for sites that would have otherwise gone with RAID 1
but need some additional performance boost


But did you know:

All drives must move in parallel to proper track lowering sustained
performance

Very limited scalability at a very high inherent cos




*Questions for the reader:


How many drives have failed? are they logical, electrical or physical
failures. Are the drives a matched set. Do you know if the failure of
the two drives was at the same time or has one drive failed and the
second went out at a later date?

Keep the order of the drives - number them before removing any drives.

Has the Raid been reinitialised? - if not DO NOT allow a reinitialisation

Are you able to supply the Raid controller?

Capacity of the drives (how many GB for each drive)
What type of drives (IDE ,SCSI, SATA)

Block Size used? (offset of starting block)
Details - additional RAID information