Category Archives: hyper-v

Data Recovery from a Hitachi HDS722020ALA330 with Bad Reading Heads and Lost NvRam

Drive is from  a professor with tenths of Postdoctoral and Ph. D students’ research work. Hard drive was clicking. Data recovery attempts had made it worse and NvRam was damaged. Data Care Clinic received the drive, NvRam cannot be read by PC 3000 Express as well as several professional programmers. After NvRam restoration, drive can be detected fully and can read about 1 TB data, bad media took out 2 of the 10 heads. Head change is successful, after adjustments, Data Care Clinic gets a full clone. All sectors have been read OK.

PC 3000 SSD Added Apple, Samsung, OCZ and AMD SSD Support

Pc 3000 SSD added support for Apple, Samsung, OCZ and AMD. Data Care Clinic equipped with the best hardware and software tools to deal with NAND based SSD, USB flash, SD/XD, Micro SD and MS. Data Care Clinic can recover data from monolithic flash storage.

Cloud Disaster Recovery & Business Continuity Services

Data Care Clinic received several phone calls from 3 big data recovery service providers after discussions at the meeting. Their companies provide backup & replication for virtual environments to provide fast backup and Instant VM Recovery, Instant File-Level Recovery, built-in data de-duplication whether on VMware or Hyper-V. Synchronous replication between servers for disaster recovery, as well as stretching of a failover cluster for high availability enables mirroring of data in physical sites ensuring zero data loss at the file system level.  Asynchronous replication allows site extension with the possibility of data loss. They have interest in working together to deal with failing storage devices and corrupted snapshots.

In 2007, we had several cases either cannot mount snapshot and vmkfstools have limited capability to deal with messed up vmdk files or there is no access via ssh (putty) or management console. We cannot fire up VPS so we cannot change boot loader. We need to mount the snapshot so that we can start up the hosted vps remotely. The support people at both host provider and VMWare told us that we were out of luck.

After we found a way to trick VMWARE so that all the snapshots can be committed, we can continue the process of fixing up our messed up file system or deal with some disk issues.  When the OS is not bootable and we don’t have a fresh backup. Instead of make a backup, we targeted files we haven’t backed up yet first.