Virtualisering

What will happen with this RAID 0+1 system if disk 1 fail

Left-side RAID 0 degraded(contiues to work), upper-level RAID 1 not affected except for possible loss of performance

Left side raid 0 completely fails, upper-level RAID 1 becomes degraded(continous work)

Upper-level RAID 1 deatches from left-side RAID 0 (allowing for disk exchange) uses right-side RAID 0 exlusively

Comparing storgae pools vs RAID, what is a disadvantage of storage pools

Not opersing system agnostic ( each vendor has own software implementation)

Lack of fibre channel support

Cannot be used in storage area networks (SANs)

Disk cannot be addressed using iQNs (iscisi quilified names)

In the storage they manage, does either ZFS or Btrfs or both allow the creation of (virtual) block storage devices that ,for example, can be used as swap partitions?

Neither btrfs nor ZFS allow to create such(virtual) block storage device

ZFS allows to create such (virtual) block storage devices, but Btrfs does not

Both Btrfs and ZFS allow to create such (virtual) block storage devices

Btrfs allows to create such (virtual) block storage devices, but ZFS does not

The closest thing in ZFS to a ‘subvolume’ in Btrfs would be a …

snapshot

dataset

subvolume

pool

Which what are their key characteristics? [ FC-P2P]

Which what are their key characteristics? [ FC-AL]

Which what are their key characteristics? [ FC-SW]

Which what are their key characteristics? [ FC-HBA]

The main issue with Btrfs right now is the …

missing official integration into the Linux kernel

broken support for RAID 5

missing support for snapshots

missing support for checksums

NFS servers can control who may mount a NFS export by which criteria?

Client-provided username only

Client-provided username and password

Client’s IP address (or hostname)

Client-provided public key

Client-provided private key

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