Whether you’re dealing with accidentally-deleted files, deleted or corrupted LUNs, or issues with an unresponsive NAS server or virtual machine setup, it can be a challenge to recover data on an Ext4 file system, even when there are plenty of…
What Is ZFS? ZFS is an open-source file system designed by Sun Microsystems. The ZFS filesystem takes on a lot of responsibility—more so than most file systems. Among ZFS’s bag of tricks are advanced journaling and self-healing features designed to…
This crashed server came to Gillware all the way from Spain. The client had an IBM Storwize V3700 server machine with eighteen enterprise-grade hard drives that had failed. They could try to mount the iSCSI targets on the server and,…
In this data recovery case, the client had four deleted LUNs they needed recovered. These LUNs, or iSCSI targets, had lived on a Synology RackStation RS3412xs network-attached storage device. Synology RS3412xs Data Recovery Case Study: Deleted LUNs RAID level: 6 Total…
The client in this case had a Dell EqualLogic PS4100 SAN. This SAN was filled with 24 300-GB enterprise-grade Seagate hard drives. These 24 hard drives were combined in a RAID-50 array with two hot spares. RAID-50, in general, has…
In a separate article, I shared some observations about how to set up a RAID 5 to make failure less likely. These observations were based on thousands of successful data recovery cases. But if your RAID has already failed, here are 12 RAID…
