Softraid 5 7 – High Quality Raid Management

Softraid 5 7 – High Quality Raid Management

Synology DX1215 Diskless System 12-Bay Expansion Unit. Form Factor: 12-Bay HDD Interface: 3.5' or 2.5' SATA(III) / SATA (II) X 12 (hard drives not included) Management: RAID Management: - Volume Type: Basic, JBOD, RAID 0, RAID 1, RAID 10, RAID 5, RAID 5+Spare, RAID 6 - RAID Migration: from Basic to RAID 1, Basic to RAID 5, Basic to RAID 5+Spare, RAID 1 to RAID 5, RAID 1 to RAID 5+Spare. Getting to RAID, as I wrote, I prefer RAID-10 (not to be confused with RAID 0+1) over RAID-5 since the level 10 offers better performance and, at the same time a superior fault-tolerance than RAID-5 (a RAID-10 array can loose up to two HDDs as long as they belong to two different sub-arrays); for more infos about raid-10 please refer to this.
RAID device drivers which support management functionality can register their services with the bio(4) driver. bioctl Image cleaner v1 1. then can be used to maintain RAID volumes.
In the first synopsis, RAID controllers are managed. device specifies either a drive (e.g. sd0) or a RAID controller (e.g. ami0). For operations which will be performed against ses(4) or safte(4) enclosures, it is also possible to directly specify the enclosure name (e.g. safte0).
In the second synopsis, softraid(4) devices are managed. device specifies either a drive (e.g. sd0) or a softraid(4) device (e.g. softraid0).
Maccaption 6 1 0 1 kg download free. The options for RAID controllers are as follows:
-aalarm-functionControl the RAID card's alarm functionality, if supported. alarm-function may be one of: disableDisable the alarm on the RAID controller.enableEnable the alarm on the RAID controller.getRetrieve the current alarm state (enabled or disabled).silence | quietSilence the alarm if it is currently beeping.The alarm-function may be specified as given above, or by the first letter only (e.g. -a e).
-bchannel:target[.lun]Instruct the device at channel:target[.lun] to start blinking, if there is ses(4) or safte(4) support in the enclosure.

-Hchannel:target[.lun]If the device at channel:target[.lun] is currently marked 'Unused', promote it to being a 'Hot Spare'.

-Hchannel:target[.lun]If the device at channel:target[.lun] is currently marked 'Unused', promote it to being a 'Hot Spare'.-hWhere necessary, produce 'human-readable' output. Use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte, Petabyte, Exabyte in order to reduce the number of digits to four or less.-iEnumerate the selected RAID devices. This is the default if no other option is given.-qShow vendor, product, revision, and serial number for the given disk.-Rdevice | channel:target[.lun]Manually kick off a rebuild of a RAID volume, using device or channel:target[.lun] as a new chunk (with softraid(4), a partition of fstype 'RAID') in the volume. device must be specified as a full path to the chunk device file (e.g. /dev/wd0d). A RAID volume rather than a RAID controller is expected as the final argument.-tpatrol-functionControl the RAID card's patrol functionality, if supported. patrol-function may be one of: stopStop the patrol on the RAID controller.startStart the patrol on the RAID controller.getRetrieve the current patrol configuration.disableDisable the patrol functionality.manualEnable the patrol functionality to start/stop manually.auto[.interval[.start]]Enable the patrol functionality to start/stop automatically in every interval seconds, starting the first iteration after start seconds.-uchannel:target[.lun]Instruct the device at channel:target[.lun] to cease blinking, if there is ses(4) or safte(4) support in the enclosure.-vBe more verbose in output.In addition to the relevant options listed above, the options for softraid(4) devices are as follows:
-Cflag[,flag[,..]]Pass flag to bioctl. May be one of: forceForce the operation; for example, force the creation of volumes with unclean data in the metadata areas.noautoDo not automatically assemble this volume at boot time.-craidlevelSoftraid Raid 10Create a softraid(4) device of level raidlevel. The device must begin with 'softraid' followed by a number. Valid raidlevels are:
0RAID 0: A striping discipline.1RAID 1: A mirroring discipline.5RAID 5: A striping discipline with floating parity chunk.CCRYPTO: An encrypting discipline.cCONCAT: A concatenating discipline.
The RAID 0, RAID 1 and CONCAT disciplines require a minimum of two devices to be provided via -l. RAID 5 requires at least three devices and the CRYPTO discipline requires exactly one.
-dDelete volume specified by device.-kkeydiskUse special device keydisk as a key disk for a crypto volume.-lspecial[,special[,..]]Use special device list to create within the softraid(4) framework. Requires -c.-Odevice | channel:target[.lun]Set the state of device or channel:target[.lun] to offline. The state of the RAID volume will change in the same way that it would if the disk physically went offline. device must be specified as a full path to the chunk device file (e.g. /dev/wd0d). A RAID volume rather than a RAID controller is expected as the final argument.-PChange the passphrase on the selected crypto volume.-ppassfileSoftraid 5Passphrase file used when crypto volumes are brought up. This file must be root owned and have 0600 permissions.-rroundsWhen creating an encrypted volume, specifies the number of iterations of the PBKDF2 algorithm used to convert a passphrase into a key. Higher iteration counts take more time, but offer more resistance to key guessing attacks. The minimum is 1000 rounds and the default is 8192.-sRead the passphrase for the selected crypto volume from /dev/stdin rather than /dev/tty. This option cannot be used during the initial creation of the crypto volume.