Datrium plans to open its new cloud disaster recovery as a service to any VMware vSphere users in 2020, even if they're not customers of Datrium's DVX infrastructure software.
Datrium released disaster recovery as a service with VMware Cloud on AWS in September for DVX customers as an alternative to potentially costly professional services or a secondary physical site. DRaaS enables DVX users to spin up protected virtual machines (VMs) on demand in VMware Cloud on AWS in the event of a disaster. Datrium takes care of all of the ordering, billing and support for the cloud DR.
In the first quarter, Datrium plans to add a new Datrium DRaaS Connect for VMware users who deploy vSphere infrastructure on premises and do not use Datrium storage. Datrium DraaS Connect software would deduplicate, compress and encrypt vSphere snapshots and replicate them to Amazon S3 object storage for cloud DR. Users could set backup policies and categorize VMs into protection groups, setting different service-level agreements for each one, Datrium CTO Sazzala Reddy said.
A second Datrium DRaaS Connect offering will enable VMware Cloud users to automatically fail over workloads from one AWS Availability Zone (AZ) to another if an Amazon AZ goes down. Datrium stores deduplicated vSphere snapshots on Amazon S3, and the snapshots replicated to three AZs by default, Datrium chief product officer Brian Biles said.
Speedy cloud DR
Datrium claims system recovery can happen on VMware Cloud within minutes from the snapshots stored in Amazon S3, because it requires no conversion from a different virtual machine or cloud format. Unlike some backup products, Datrium does not convert VMs from VMware's format to Amazon's format and can boot VMs directly from the Amazon data store.
"The challenge with a backup-only product is that it takes days if you want to rehydrate the data and copy the data into a primary storage system," Reddy said.
Although the "instant RTO" that Datrium claims to provide may not be important to all VMware users, reducing recovery time is generally a high priority, especially to combat ransomware attacks. Datrium commissioned a third party to conduct a survey of 395 IT professionals, and about half said they experienced a DR event in the last 24 months. Ransomware was the leading cause, hitting 36% of those who reported a DR event, followed by power outages (26%).
The Orange County Transportation Authority (OCTA) information systems department spent a weekend recovering from a zero-day malware exploit that hit nearly three years ago on a Thursday afternoon. The malware came in through a contractor's VPN connection and took out more than 85 servers, according to Michael Beerer, a senior section manager for online system and network administration of OCTA's information systems department.
Beerer said the information systems team restored critical applications by Friday evening and the rest by Sunday afternoon. But OCTA now wants to recover more quickly if a disaster should happen again, he said.
OCTA is now building out a new data center with Datrium DVX storage for its VMware VMs and possibly Red Hat KVM in the future. Beerer said DVX provides an edge in performance and cost over alternatives he considered. Because DVX disaggregates storage and compute nodes, OCTA can increase storage capacity without having to also add compute resources, he said.
Datrium cloud DR advantages
Beerer said the addition of Datrium DRaaS would make sense because OCTA can manage it from the same DVX interface. Datrium's deduplication, compression and transmission of only changed data blocks would also eliminate the need for a pricy "big, fat pipe" and reduce cloud storage requirements and costs over other options, he said. Plus, Datrium facilitates application consistency by grouping applications into one service and taking backups at similar times before moving data to the cloud, Beerer said.
Datrium's "Instant RTO" is not critical for OCTA. Beerer said anything that can speed the recovery process is interesting, but users also need to weigh that benefit against any potential additional costs for storage and bandwidth.
"There are customers where a second or two of downtime can mean thousands of dollars. We're not in that situation. We're not a financial company," Beerer said. He noted that OCTA would need to get critical servers up and running in less than 24 hours.
Reddy said Datrium offers two cost models: a low-cost option with a 60-minute window and a "slightly more expensive" option in which at least a few VMware servers are always on standby.
Pricing for Datrium DRaaS starts at $23,000 per year, with support for 100 hours of VMware Cloud on-demand hosts for testing, 5 TB of S3 capacity for deduplicated and encrypted snapshots, and up to 1 TB per year of cloud egress. Pricing was unavailable for the upcoming DRaaS Connect options.
Other cloud DR options
Jeff Kato, a senior storage analyst at Taneja Group, said the new Datrium options would open up to all VMware customers a low-cost DRaaS offering that requires no capital expense. He said most vendors that offer DR from their on-premises systems to the cloud force customers to buy their primary storage.
George Crump, president and founder of Storage Switzerland, said data protection vendors such as Commvault, Druva, Veeam, Veritas and Zerto also can do some form of recovery in the cloud, but it's "not as seamless as you might want it to be."
"Datrium has gone so far as to converge primary storage with data protection and backup software," Crump said. "They have a very good automation engine that allows customers to essentially draw their disaster recovery plan. They use VMware Cloud on Amazon, so the customer doesn't have to go through any conversion process. And they've solved the riddle of: 'How do you store data in S3 but recover on high-performance storage?' "
Scott Sinclair, a senior analyst at Enterprise Strategy Group, said using cloud resources for backup and DR often means either expensive, high-performance storage or lower cost S3 storage that requires a time-consuming migration to get data out of it.
"The Datrium architecture is really interesting because of how they're able to essentially still let you use the lower cost tier but make the storage seem very high performance once you start populating it," Sinclair said.