Feeds

Hundreds of websites go titsup in Prime Hosting disk meltdown

UK biz brought up servers using months-old backups

Secure remote control for conventional and virtual desktops

Hundreds of UK-hosted websites and email accounts fell offline when a disk array failed at web biz Prime Hosting. As many as 860 customers are still waiting for a fix more than 48 hours after the storage unit went titsup.

The downtime at the Manchester-based hosting reseller began at 5am on 31 July, and two days later some sites are still down.

James Smith, executive director at parent company M247, explained that the fault lay with the hardware: "The problems were caused by the failure of three hard drives in a RAID6 array, therefore losing parity."

After one blew, the rebuild process staggered into problems, he said:

Attempts were made to rebuild the array due to one failed drive, two other drives then started to exhibit a high rate of media errors during the array rebuild.

The rebuild process failed at 15 per cent complete, a few minutes after the rebuild failed a second hard drive went in to a “missing” state and would not rejoin the array.

At this point, the array was severely degraded and could not tolerate any further failures. Unfortunately the third drive with high media errors then also went in to a failed state during efforts to take a more recent replicated copy of data. The replication of data had 790GB of data to sync, it managed 150GB before failing.

Several customers were upset to find their restored websites had reverted to a backup that was months old. A Reg reader said his site, email and databases had slipped back to a version from three months ago.

Smith assured The Reg that data had not been lost, and this resurrection of old files was just part of the fix process. The outdated data was used to speed up efforts to bring the virtual machines hosting services back online, he explained:

Efforts then started to bring virtual machines online, initially using the outdated replicated data. Services were restored quickly with outdated replicated data from secondary storage area network.

Using the outdated replicated data enabled us to bring service online quicker than individual account restores from archived backups. More recent individual account backups are currently being restored to bring customer data completely up to date.

Outage at Prime Hosting tweets, credit screengrab Twitter

Prime Hosting report outage on Twitter: Reversions to backups from April were only temporary

Prime Hosting apologised to punters, and said that it has had a team working solidly for 36 hours without sleep in order to minimise the impact. It also promised to compensate all affected customers with one month's service credit.

Smith emphasised that although Prime Hosting operates under the M247 banner, the problem solely affected Prime Hosting customers and sprang from hardware managed by Prime Hosting. ®

Gartner critical capabilities for enterprise endpoint backup

More from The Register

next story
So, Apple won't sell cheap kit? Prepare the iOS garden wall WRECKING BALL
It can throw the low cost race if it looks to the cloud
6 Obvious Reasons Why Facebook Will Ban This Article (Thank God)
Clampdown on clickbait ... and El Reg is OK with this
Shoot-em-up: Sony Online Entertainment hit by 'large scale DDoS attack'
Games disrupted as firm struggles to control network
BT customers face broadband and landline price hikes
Poor punters won't be affected, telecoms giant claims
Netflix swallows yet another bitter pill, inks peering deal with TWC
Net neutrality crusader once again pays up for priority access
EE: STILL Blighty's best mobe network, says 'Frappucino' Moore
Fresh round of network stats fisticuffs possibly on the cards here
US TV stations bowl sueball directly at FCC's spectrum mega-sale
Broadcasters upset about coverage and cost as they shift up and down the dials
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
5 things you didn’t know about cloud backup
IT departments are embracing cloud backup, but there’s a lot you need to know before choosing a service provider. Learn all the critical things you need to know.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?