Tag Archives: storage

VMDK growth patterns (VMFS3 / 5)

I got curious about block sizes and how thin provisioned .vmdks and snapshot .vmdks grow, especially now that VMFS5 uses a 1MB “unified” block size. I came up with the following table: VMDK File growth patterns VMFS3 ESXi 4.1………Thin Provision…..Snapshots … Continue reading

Posted in Computing, Storage, Virtualization, VMware | Tagged , , , , , , | 5 Comments

vSphere5 – Storage – import a 4TB LUN

With vSphere5 you can format 64TB LUNs with VMFS5, but you are still limited to 2TB VMDK files. [note that a new VMFS5 datastore has a 1MB block size and 2TB VMDK max, breaking away from the old 1/2/4/8 = … Continue reading

Posted in Cloud, Computing, Storage, Virtualization, VMware | Tagged , , , , , | Leave a comment

Are you thin, thick or just lazy?

vSphere 5 is almost upon us and I’ll try to start throwing out nuggets (now that I’ve learned the Beta NDA is over). One of my favorite tidbits is the new way to create hard drives (VMDKs) for virtual machines. … Continue reading

Posted in Cloud, Computing, Storage, Virtualization, VMware | Tagged , , , | 7 Comments

vCenter Storage Status “unknown”

I’ve seen a few cases where storage devices (specifically iSCSI or FCP datastores) return a gray “unknown” for a status:

Posted in Cloud, Computing, Storage, Virtualization, VMware | Tagged , , , , , | Leave a comment

My snapshots are where?

Update: Per the VMware Storage Blog this behavior has changed for 5. In vSphere 5.0, the workingDir parameter still exists, but it will no longer be used as a pointer to a location for storing snapshot delta disks. The workingDir … Continue reading

Posted in Cloud, Virtualization, VMware | Tagged , , , , | 1 Comment

Moving VMDK files

If you don’t have vSphere installed, or don’t have Storage vMotion and want to move vCenter itself there are several ways, the “vmkfstools” from the commandline, V2V with VMware Converter or another P2V tool, or by using the vSphere client’s … Continue reading

Posted in Computing, Storage, Virtualization, VMware | Tagged , , , , , , , , | 1 Comment

What storage should I use? (was: FisherPrice of storage arrays)

The first SAN I worked on was an old Dell-branded EMC that Dell called the PowerVault 550 (=EMC AX100?). It had several interfaces that were all required to manage it, was complicated as hell and rock solid no matter what … Continue reading

Posted in Computing, NetApp, Storage | Tagged , , , , , , , | Leave a comment

VMware for Storage Administrators

VMware has a new class out aimed at existing SAN/storage admins to help them better support a VMware environment.   Read more at the link above, but for $1200 this online or in person class can get your storage team … Continue reading

Posted in Virtualization, VMware | Tagged , , , , , | Leave a comment

VMware HCL and the Dell R415

Got a call from a client with a new Dell server.  Seems ESXi won’t install (“unable to find a supported device to write the VMware ESXi 4.1.0 image to” which is the VMware version of “no drive found”). Turns out … Continue reading

Posted in Virtualization, VMware | Tagged , , , , | Leave a comment