RAID data recovery in san jose & the bay area
RAID, NAS, server, business storage, and failed rebuild recovery
if your RAID, server, or NAS failed, we can help recover it
Corrupted volumes, failed arrays, unreachable shares, business files, databases, virtual machines, and project data can still be recoverable when a RAID server, NAS, SAN, or enterprise storage system becomes inaccessible.
With 26+ years of experience, advanced RAID recovery tools, and secure lab procedures, Kotar Data Recovery provides professional RAID, NAS, server, and business data recovery for clients across San Jose, San Francisco, and the Bay Area.
why your data can still be recoverable when RAID fails
Servers, NAS devices, and RAID systems are built for resilience, but even enterprise storage can fail.
Data is often still present across the original drives, even when the array is degraded, offline, missing a drive, not mounting, or stuck after a failed rebuild.
Our San Jose lab analyzes the original drives, determines the RAID parameters, images the media safely, and rebuilds the array virtually before recovering files from the safest available copy.
devices and failure types we recover
We recover data from all major RAID, NAS, server, SAN, and business storage systems.
Server and storage brands including Dell, HP, Lenovo, Synology, QNAP, Supermicro, IBM, NetApp, Buffalo, WD, and custom-built systems
Operating systems including Windows Server, Linux, UNIX, VMware ESXi, Hyper-V, macOS, and server-based file systems
RAID levels including RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 50, JBOD, and custom RAID configurations
Storage setups including standalone servers, NAS devices, SAN arrays, external RAID enclosures, virtualized environments, and backup systems
Drive types including HDDs, SSDs, SAS drives, SATA drives, enterprise drives, NAS drives, and high-capacity helium hard drives
Failure types including logical corruption, RAID rebuild errors, accidental deletion, corrupted volumes, controller failure, multiple drive failure, and drive removal issues
common RAID and server issues we solve
RAID failure with degraded, offline, or partially rebuilt arrays
Failed RAID rebuild where the rebuild stopped, failed, or made the volume inaccessible
Multiple drive failures involving simultaneous HDD or SSD loss
Hardware issues including controller, PSU, backplane, or enclosure failure
File system corruption causing inaccessible shares, missing folders, mount errors, or RAW volumes
Firmware corruption involving RAID cards, storage nodes, NAS devices, or server hardware
Failed migrations or upgrades causing partial data loss or inaccessible volumes
Accidental deletions caused by user error, software error, or removed shared folders
Reconfigured arrays caused by mistaken initialization, drive order changes, or parity overwrite
Malware and ransomware damage causing corrupted, encrypted, deleted, or inaccessible data
Network or power issues causing logical corruption, interrupted writes, or boot failure
Virtual machine storage failure involving VMDK, VHD, VHDX, VMFS, Hyper-V, or other virtual disk files
RAID rebuild failed
If a RAID rebuild failed, stopped, or made the volume inaccessible, do not force another rebuild.
A failed rebuild can overwrite parity, damage the file system, or make recovery more complex.
Our San Jose data recovery lab can analyze the original drives, determine the correct RAID parameters, rebuild the array virtually, and recover files from the safest available copy.
RAID 5 and RAID 6 recovery
RAID 5 and RAID 6 systems can fail when one or more drives become unreadable, the controller fails, the rebuild process stops, or the array configuration is lost.
These failures often affect business servers, NAS systems, backup arrays, and production storage.
We recover RAID 5 and RAID 6 arrays by imaging the original drives, identifying drive order, stripe size, parity rotation, missing disks, and file system damage, then rebuilding the array virtually before extracting the data.
NAS data recovery
We recover data from failed NAS systems used for shared business files, backups, photos, videos, office documents, databases, and media storage.
Common NAS failures include degraded arrays, missing drives, failed updates, inaccessible shared folders, corrupted volumes, and drives removed in the wrong order.
Our lab works with Synology, QNAP, WD, Buffalo, Netgear, Asustor, TerraMaster, and other NAS systems used by Bay Area businesses and home users.
server data recovery
We recover data from failed servers, workstations, storage arrays, and business systems affected by drive failure, RAID corruption, controller problems, file system damage, accidental deletion, malware, power loss, or failed maintenance.
Our San Jose lab provides server data recovery for businesses, IT teams, startups, engineering companies, legal offices, medical offices, creative teams, and professional organizations across the Bay Area.
business data recovery in the bay area
Business data loss can affect operations, client files, accounting records, project folders, databases, virtual machines, email archives, and shared storage.
Our San Jose lab helps Bay Area businesses recover critical data from RAID arrays, NAS devices, servers, external drives, SSDs, and backup systems.
We handle business recovery cases with secure diagnostics, clear communication, and professional recovery procedures designed to protect the original media and reduce unnecessary risk.
signs of a failing server, NAS, or RAID array
Volumes or shared folders are not accessible
Frequent crashes, freezes, or unexpected shutdowns
Slow performance, high latency, or delayed file access
Mount errors or missing drives in the operating system
RAID controller showing degraded, failed, or offline status
Drive LEDs blinking amber, red, or showing warning status
Server will not boot or repeatedly restarts
Users reporting missing, corrupted, or inaccessible data
Overheating, unusual drive noises, or repeated drive errors
Virtual machines will not start or appear corrupted
what you should do and not do
Stop using the server, NAS, or RAID array if the data is important, especially if the system is degraded.
Do not force another RAID rebuild after a failed or interrupted rebuild.
Do not replace multiple drives at once unless the array has already been professionally evaluated.
Do not initialize, format, or create a new volume if the system asks you to.
Do not run fsck, CHKDSK, repair utilities, or reconfiguration tools on the original drives if the array is unstable.
Document the RAID level, drive order, and recent changes before removing any drives.
Contact professional RAID recovery engineers before making additional changes to the array.
our 3-step RAID recovery process
Free evaluation with detailed RAID diagnosis and a fixed quote before work begins.
Array imaging with each drive cloned bit for bit to preserve parity, structure, and the original media.
RAID reconstruction and file verification with the logical volume rebuilt and files checked for readability before delivery.
how fast do you need your data back?
standard service - recovery during regular business hours
express service - completed in up to 72 hours
24/7 emergency service - round-the-clock recovery on request
why choose kotar for RAID and server recovery
No data, no fee guarantee
Free, secure door-to-door shipping across the Bay Area
Professional San Jose lab serving RAID, NAS, server, and business recovery clients across the Bay Area
26+ years of data recovery experience with complex RAID and server failures
Advanced RAID recovery tools for degraded arrays, failed rebuilds, missing drives, and corrupted volumes
Secure handling for business, legal, medical, engineering, financial, and creative files
Transparent pricing with a fixed quote before work begins
Emergency service available for critical business recovery cases
related data recovery services
For mechanical drive failures inside RAID or NAS systems, visit our hard drive data recovery page.
For SSD-based RAID or failed solid-state storage, visit our SSD data recovery page.
For damaged virtual machines or virtual disks, visit our VM recovery page.
For cloud-sync or backup-related data loss, visit our cloud data recovery page.
For deleted, missing, or formatted files, visit our lost file recovery page.