VDEV devices

Question

Hi

The back end director information is missing for the VDEV device configuration.

Sample output:
============

Device Physical Name : Not Visible

Device Symmetrix Name : 132B
Device Serial ID : N/A
Symmetrix ID : 00019010xxxx

Vendor ID : EMC
Product ID : SYMMETRIX
Product Revision : 5772
Device WWN : 60060480000190102504533031333242
Device Emulation Type : FBA
Device Defined Label Type: N/A
Device Defined Label : N/A
Device Sub System Id : 0x000B
Cache Partition Name : DEFAULT_PARTITION

Device Block Size : 512

Device Capacity
{
Cylinders : 9295
Tracks : 139425
512-byte Blocks : 17846400
MegaBytes : 8714
KiloBytes : 8923200
}

Effective Device Geometry: N/A
{
Sectors/Track : N/A
Tracks/Cylinder : N/A
Cylinders : N/A
MegaBytes : N/A
KiloBytes : N/A
}

Device Configuration : VDEV (Meta Member,
Non-Exclusive Access)

............................
.............................

Back End Disk Director Information
{
Hyper Type : Virtual
Hyper Status : Ready (RW)
Disk [Director, Interface, TID] : [N/A,N/A,N/A]
Disk Director Volume Number : N/A
Hyper Number : N/A
}

So where this VDEV will get the capacity. Here Vdev is not associated to any back-end director for disks.

Message was edited by:
MikeMac
Removed Symm S/N

Quincy561 · Accepted Answer

The SAV devices are the pool devices that you must assign to a VDEV device for it to funtion. These pool devices that are assigned to a VDEV are then used to store changes to either the source or the VDEV. The SAV devices are all used in a round robin manner.

This should all be explained in the product guides for Virtual Snap.

John

Quincy561 · Answer

A VDEV is a cache only device, and has no back end information.The physical storage it uses is the SAV pool devices.

naren23-3_uew · Answer

Thanks for your reply. What is SAV pool devices.How we can determine where the information is stored for the Vdev devices.Can you refer some documents about the capacity utilization of VDEV devices.

Symmetrix

VDEV devices

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