8 More Discussions You Might Find Interesting
1. Solaris
Hi
I am having two node cluster. I was trying to change the to use scsi3 reservation for all disks having two paths. Please let me know where I went wrong or there any issue to implement the same.
On node1
bash-3.2# cldev status
=== Cluster DID Devices ===
Device Instance ... (8 Replies)
Discussion started by: sb200
8 Replies
2. AIX
Hello,
I have a scsi pci x raid controller card on which I had created a disk array of 3 disks
when I type lspv ; I used to see 3 physical disks ( two local disks and one raid 5 disk )
suddenly the raid 5 disk array disappeared ; so the hardware engineer thought the problem was with SCSI... (0 Replies)
Discussion started by: filosophizer
0 Replies
3. Red Hat
Hi,
I would like to know scsi id of hard drive, which command is used to find scsi id of hard drive and disk related information.
Regards
Manoj (3 Replies)
Discussion started by: manoj.solaris
3 Replies
4. UNIX for Dummies Questions & Answers
hey guys this is my problem I have SCO unix installed on a IDE h/drive. I want to add a SCSI hard drive, how do i do that within UNIX (1 Reply)
Discussion started by: kwame.neilsen
1 Replies
5. Solaris
I have run init 0 to bring it to OK prompt.
I know that probe-scsi-all can hang the system.
I want to know what is the difference between probe-scsi-all and probe-scsi.
I was told that probe-scsi-all external and internal devices and probe-scsi shows only internal devices. what dose this ... (3 Replies)
Discussion started by: nitinkgoud
3 Replies
6. UNIX for Advanced & Expert Users
I would like to install a AIT drive to the scsi connector on our solaris box. I am very new to the unix world and would be greatful if someone could help or lead me in the right direction.
Thanks (4 Replies)
Discussion started by: vpyle
4 Replies
7. UNIX for Dummies Questions & Answers
Hello agian !
What is the difference between SCSI and IDE hard disks ?
I have Intel PC and when i check i have Generic IDE TYPE DISK0
is IDE hard disk is ok for Solrais ? or should i buy the SCSI hard disk ?
Thanks
Abid Malik (3 Replies)
Discussion started by: abidmalik
3 Replies
8. UNIX for Advanced & Expert Users
How can you get a scsi card to initalize or decome available at boot up on AIX 4.3 (1 Reply)
Discussion started by: truma1
1 Replies
SCSI(7) Miscellaneous Information Manual SCSI(7)
NAME
SCSI, RAID - Small Computer System Interface
SYNOPSIS
dsk#, tape#_d#, cdrom#
DESCRIPTION
The operating system interfaces to disk and tape devices through the Small Computer System Interface (SCSI). SCSI support is limited to
the Compaq-supplied storage devices and certain third-party devices. To determine which named devices are supported in the default system,
refer to the file /etc/ddr.dbase. For example, the following devices are listed therein: Winchester disks: RZ24L, RZ25, RZ25L, RZ25M,
RZ28M, RZ29B, RZ55, RZ56, RZ58, RZ73, RZ74, RX23, RX26, RX33, IOMEGA ZIP, RAID (Redundant Arrays of Independent Disks) SCSI controllers:
HSZ10, HSZ40, HSZ80 Magnetic tapes: TZ30, TZK11, TLZ06, TKZ09, TKZ60, DLT8000, SDT-10000 Media Changers: TL800, ESL9000 Optical disks:
RRD42, RRD43, RRD44
Vendors can add their own devices to ddr.dbase.
Refer to the Software Product Description (SPD) for a given release of the operating system for more information on processor-specific
device support.
Under the operating system, a SCSI device is referred to by a device identifier that is assigned by the operating system. This name has no
relationship to the descriptive name of the device, although in previous releases of the operating system disks such as the RZ74 mapped to
a system-assigned rz# logical name (where # was the instance number of that disk.
Current logical names for SCSI disks and tapes take the forms specified in the rz(8) and tz(7) reference pages, such as dsk? and tape?.
Refer to the dsfmgr(8) reference page for the naming conventions for disks, tapes and other devices, such as CD-ROM readers. Refer to the
hwmgr(8) reference page for information on determining device names and other device data.
SCSI Device Limits
The number of possible target device IDs is determined by the controller type and method of connection, such as a multibus connection using
fibre channel. Refer to the emx(7) reference page for an example of device addressing.
Device Special Files
The dsfmgr command creates device special files for all the devices that are attached to SCSI controllers. This event occurs automatically
on system startup, and no administrative intervention is required unless an event requires that a device be renamed or its I/O be reas-
signed. In such cases, you can use dsfmgr and hwmgr to manage SCSI devices and their associated device special files without the need to
calculate values from their Bus, Target ID, and LUN data.
RESTRICTIONS
The SCSI device driver is not warrantied to operate with optical disks other than the devices listed in /etc/ddr.dbase/. The SCSI driver
attempts to support, on a best-effort basis, disks and magnetic tapes supplied by other vendors.
The following notes apply to the driver's handling of disks from other vendors: These disks are identified using the following command: #
hwmgr -get attribute -a name This command will return the device name SCSI-WWID (World-Wide Identifier) for all devices on the system,
which includes the model name of the device. You can filter the output by specifying categories of devices. Disks are assigned a default
partition table. The default table can be modified by editing the ccmn_rzxx_sizes[8] entry in the /usr/sys/data/cam_data.c file. The
disklabel command can also be used to modify the partition table on an RZxx disk.
RELATED INFORMATION
atapi_ide(7), dsfmgr(8), emx(7), hwmgr(8), rz(7), tz(7), disklabel(8), ddr.dbase(4) delim off
SCSI(7)