topic Re: hp jbods in Disk

hp jbods

khilari — Fri, 20 Jan 2006 02:29:09 GMT

Hi people,i need some info regarding jbods and their configuration. Any hp jbod

Re: hp jbods

Joseph Loo — Fri, 20 Jan 2006 02:38:54 GMT

hi,

pretty old stuffs but u may refer to this doc:

http://docs.hp.com/en/145/diskwp2.pdf

JBODs stands for "Just a Bunch Of Disks".

regards.

Re: hp jbods

Devender Khatana — Fri, 20 Jan 2006 02:40:51 GMT

Hi,

There are some enclosures from HP which will be doing the same job for you. You can go for DS2300, MSA1000 and other models within these depending upon the requirement and scalability.

In configuration part you will have to evenly distribute the load across multiple controllers if any. Use stripping at extent level to achive this so that the load is distributed across controllers.

HTH,
Devender

Re: hp jbods

Steven E. Protter — Fri, 20 Jan 2006 02:41:17 GMT

Shalom Mijtaba,

A model number might help.

Its actually fairly easy.

Connect to a compatible scsi card, power it up and run ioscan -fnC disk

But: If the two SCSI cards have the same scsi id one of the systems will panic when you hook of a second system.

SEP

Re: hp jbods

Shameer.V.A — Fri, 20 Jan 2006 06:16:26 GMT

Hi Mujtaba,
JBOD stands for Just Bunch of disks.
HP DS21xx is entry level jbods.
This you can use as DAS ( Direct Attached Storage) for your server for mounting extra hdds when your server don't have enough room.

Just go through the following thread ..

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=993116

Regards,

Shameer

Re: hp jbods

Uwe Zessin — Fri, 20 Jan 2006 07:29:47 GMT

Devender,
the MSA1000 is not a simple disk drive enclosure - it is a complete (array controller + 14 disk bays) FC storage subsystem.

Re: hp jbods

Alzhy — Fri, 20 Jan 2006 08:44:28 GMT

JBODS are just simple enclosure based disks chained together and connected to an appropriate HBA (SCSI - differential or not or FC). On the HP side, there's the DS21XX family as well as the DS24XX (FC based).

The DS2110 HP SCSI JBOD:
http://h18006.www1.hp.com/products/storageworks/ds2120/index.html

The DS24XX HP FIbre JBOD:
http://www.hp.com/products1/storage/products/disk_arrays/disksystems/ds2405/index.html

To get the redundancy (and sometimes performance) of HW RAID based storage - you will always need a host based volume manager that will do mirroring or other software RAID based protection for you (your choices are LVM and VxVM). Properly configured and laid out JBODS (OS/LVM?VxVM level) can sometimes result in storage units that comes close to the performance of their SAN or Hardare Raid based cousins.

As far as other configuration - you basically just hook them up to your HBA (FC, or SCSI). Theres basically very little configuration that you need to do on the enclosure apart from the ability to change SCSI ID addresses or splitting the the bus into two (for connection to two HBAs/systems) in the case of JBODs that allow for such.