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JBOD (just a bunch of disks or just a bunch of drives) is an architecture using multiple hard drives exposed as individual devices.Hard drives may be treated independently or may be combined into one or more logical volumes using a volume manager like LVM or mdadm, or a device-spanning filesystem like btrfs; such volumes are usually called "spanned" or "linear | SPAN | BIG".
Windows Home Server Drive Extender is a specialized case of JBOD RAID 1 implemented at the file system level. [23] Microsoft announced in 2011 that Drive Extender would no longer be included as part of Windows Home Server Version 2, Windows Home Server 2011 (codename VAIL). [24]
Diagram of a RAID 1 setup. RAID 1 consists of an exact copy (or mirror) of a set of data on two or more disks; a classic RAID 1 mirrored pair contains two disks.This configuration offers no parity, striping, or spanning of disk space across multiple disks, since the data is mirrored on all disks belonging to the array, and the array can only be as big as the smallest member disk.
Non-RAID drive architectures#JBOD; This page is a redirect. The following categories are used to track and monitor this redirect: To a section: ...
Creating single logical volumes of multiple physical volumes or entire hard disks (somewhat similar to RAID 0, but more similar to JBOD), allowing for dynamic volume resizing. Managing large hard disk farms by allowing disks to be added and replaced without downtime or service disruption, in combination with hot swapping.
"Ganged" versus "unganged" difference could also be envisioned as an analogy with the way RAID 0 works, when compared to JBOD. [11] With RAID 0 (which is analogous to "ganged" mode), it is up to the additional logic layer to provide better (ideally even) usage of all available hardware units (storage devices, or memory modules) and increased ...
geom_concat (concatenating, also called spanning or JBOD) geom_vinum (legacy volume manager with RAID0/1/4/5 support) geom_ccd (legacy volume manager with RAID0 and rudimentary RAID1 support) Encryption and compression modules. geom_eli (also called GELI, provides traditional encryption using AES, Blowfish, Triple DES or Camellia algorithms.
Today, EtherDrive devices provide RAID 0, 1, 5, 10, and JBOD. These use AoE to talk to the initiator but provide a hardware RAID close to disk. The device also provides a block scrubbing mechanism called RAIDShield that systematically checks every block on every disk for potential failures.